Academic Profile and Achievement Record

 

 

 

 

 

Dr.A.Subrahmanyam

 

Professor



 

 


   

Department of Physics

 

Indian Institute of Technology, Madras

 

Chennai 600036

 

India




Dr.A.Subrahmanyam

Professor

Department of Physics

Indian Institute of Technology  Madras

Chennai 600036

manu@iitm.ac.in
Phone : 044-22574865 (Office)
Fax:      044-22574852

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Summary of Achievement Record:

 

 

Awards :

 

1.           1988   BOYSCAST (Better Opportunities for Young Scientists  in Chosen  Areas of Science and Technology ) awarded by Department of Science and Technology, Government of India

2.      1989   Alexander von Humboldt Fellowship, Humboldt

                      Foundation, Germany

 

3.      2008-09 Nominated as Guest Professor (W3) at Technical

University, Dresden, Germany.

 

4.      June 2008 : Saint Gobain Chair, Ecole Polytechnique, Paris

 

 

International Refereed Journals     :        89    

 

International Conferences                :        80

 

Doctoral Theses Guidance                :        10 (04 On going)

 

Sponsored Projects executed           :        27 (04 On going)

 

International consultancy /

   Sponsored projects                         :        04

 

Patents (Filed /awarded)                 :        06 (02 awarded)

 

 

 

Technologies Developed:

 

1.    ITO on Kapton for Indian Space Research (ISRO)

 

2.    Pilot Plant (first plant) for ITO Coatings (With SAMEER Chennai)

 

3.    Gun Barrel coatings (with ARCI, Hyderabad)

 

 

Presently working on Artificial Lungs (in collaboration with Apollo Hospitals)

 

 


Professional Record:

 

 

Sept. 2000 – to date:      Professor, Department of Physics, IIT, Madras, Chennai

 

June 1995 – Sept. 2000: Associate  Professor, Department of Physics, IIT, Madras, Chennai

 

July 1990 – May 1995:   Assistant Professor, Department of Physics, IIT, Madras, Chennai.

 

Dec. 1982 – June 1990:  Lecturer, Department of Physics, IIT, Madras

 

Oct. 1980 -  Dec. 1982:  Lecturer, Birla Institute of Technology & Science [BITS], Pilani (Rajasthan)

 

 

Awards / Fellowships:

 

1.1988   BOYSCAST (Better Opportunities for Young Scientists                          in Chosen  Areas of Science and Technology ) awarded by Department of Science and Technology, Government of India

 

2. 1989   Alexander von Humboldt Fellowship, Humboldt

                   Foundation, Germany

 

 

Education

 

B. Sc. Physics - [1973]; Andhra University, Visakhapatnam, India

 

M. Sc. hysics -[1975]; Andhra University, Visakhapatnam, India

 

Ph. D. Physics -[1980]; Indian Institute of Technology, Khargpur, India

 

 

Post-doctoral experience

 

 January 1980 – October 1980 :  Research Associate, International Centre for Theoretical Physics, Trieste, Italy


Academic experience

 

a. Teaching               Experience - 27 years

 

 

Advanced graduate level:

       


1. Semiconductor Physics

2. Atomic and Molecular Physics

3. Transducer Technology

4. Microprocessor based Physics   Instrumentation

5. Physics and Technology of Photovoltaics*

6. Advanced Electromagnetic Theory

7. Basic Quantum Mechanics

 


* This course has been designed and developed for Master of Technology curriculum.  

 

Also has experience in teaching courses using concepts of  web based curriculum: presently teaching Quantum Mechanics for Engineers through the web.

 

 


Graduate level :

 

1. Basic Electromagnetic Theory

2. Semiconductor Physics

3. Condensed matter Physics

 

 

Undergraduate level :

 

1. Basic Physics (PH 101, PH 102 and PH 201)

2. Quantum Mechanics for Engineers


        ·       Coordinated B. Tech and M. Sc. programmes

        ·       Developed new courses at M. Sc. and M. Tech. level.

 

Teaching  at International Institutes:

 

Taught a summer course (PH142) on basic electricity, magnetism and electromagnetic theory at the University of Illinois, Chicago during the summer of 1996 (rated as very good teacher).

 

 

Taught a course on the Basics and Advanced Photovoltaics at the University of Kabengasen, Kuala Lumpur, Malaysia during Jan – Feb 1988.

 

 

b. Research               Experience – 30 years

 

Areas of  specialization

 

Metal Oxide Thin Films and Devices

 

        -   Indium Tin Oxide (ITO)

-  Vanadium Oxide Thin Films for optical Switching

-  Solid state electro-chromic devices (WO3)

-  Nano thin films for optical memories (Ag2O)

 

Magnetron Design Fabrication

 

          -  Cylindrical and planar magnetron cathodes

 

Semiconductor Materials and Devices

 

 - Wide gap Nitrides (Indium Gallium Nitride)

 -  Photovoltaics

 

Plasma Diagnostic Techniques

 

 - Langmuir Probe

 - Optical Emission Spectroscopy

 

Photocatalysis for Oxygenation of Blood

 

 

 

 

 

Patents awarded :

 

1. Scratch resistance Coatings on Plastic Lenses

(195/MAS/2003 dated 10 March 2003)

 

2. Electrically Conducting Coatings on Kapton Films for ESD 

(223 /MAS/2003 dated 19 March 2003)

 

Patents applied:

 

1.   Artificial  Infusion of oxygen into human blood by Photocatalytic reaction (427 CHE 2006 dated 10 March 2006)

2.    Electron beam induced chromism and photo-luminescence in reactive DC Magnetron sputtered non-stoichiometric tungsten oxide thin films (653 CHE 2006 dated 10.04.2006)

3.    Nano silver for optical read / write memories (Filed by Department of Information Technology, Govt of India, 1207/CHE/2006,  December 2006).

4.     Design of Cylindrical magnetron with embedded optical emission spectroscopy for process control (21/DEL/2008, 03 January 2008).


Invited and key note lectures:

 

4.       PSE 2006 (International conferce on Plasma and Surface Engineering, Garmisch Partenkirchen, Germany, September 2006)

 

Key note lecture on : recent trends in Transparent conducting oxides : A Review

 

5.       Indo – Japan workshop on ZnO material and devices

New Delhi, December 2006

 

Invited: The present status od p- type ZnO thin films

 

3.   ASAIO Conference

              New Delhi, October 2006

 

              Invited: The ITO films in display technology

 

4.   ASME Conference

               Seattle, USA May 2006

              Invited: TiO2 for oxygenation of human blood

 

List to be updated

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Professional credits

 

          Member, American Vacuum Society, New York

 

        Member, Semiconductor Society, New Delhi

 

        Elected Member, Dielectrics Society, London

 

          Life member, Indian Vacuum Society

 

        Elected Member, Plasma Group, European Commission


 

Administrative experience

 

 

Feb. 2003 – May 2006          : Head, Department of Physics, IIT,

                                                Madras, Chennai

 

July 2003 – August 2004       : Chairman, JAM, IIT Madras

 

April 1999 – March 2002       :Warden, Tapti Hostel, IIT Madras

 

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Organizational involvement: 

 

1.     Organized a Short Term Course on “Fundamentals of Photovoltaic Materials and Devices, IIT Madras, June 1986.

 

2.     Worked as Secretary for the 2nd National Symposium in Defects in

        Insulating Solids, IIT Madras , February 1988

 

3.     Organized a Short term course on “ Photovoltaics for Terristrial and Space Applications” , IIT Madras, February 1996

 

4.     Organized a Short term course exclusively for the industry on “Recent Trends and Market Potential of Photovoltaics”  IIT Madras, July 1997

 

5.     Worked as Member in the 9th Plan Research Planning Committee to the Ministry of Non Conventional Energy Sources, Government of India  (2000-2001).

 

6.     Technical Expert member to the Andaman Nicobar Administration for Photovoltaic Tender Evaluation (2000 – 2001)

 

7.     Working committee member, Ministry of Information Technology (for Electronic components, Materials and Photonics)  2002- 2008.

 

 

8.     Board of Academic Studies member for : Cochin University of Science and technology, Cochin and Avinashi Lingam Institute (Deemed University), Coimbatore  (2002 -2007).

9.     Director, Board of M/s Microsol Power, Hyderabad (2003 –  2004).

 

10.    Vice Chairman for the International Workshop on Physics of Semiconductor Devices (IWPSD), December 16-20, 2003

 

11.    Local organizing Committee Member for International Conference on Electromagnetic Interference and Compatibility (INCEMIC),  December 1999 (New Delhi) and  December 2003 (Chennai).

 

 

Secretary, Alumni Association, IIT Madras (1987 -88)

 

Joint Secretary, Humboldt Club, Madras    (1995-96)

 

Secretary, IIT Kharagpur Alumni Association, Madras Chapter(1999 –2002)

 

 Joint Secretary, Semiconductor Society, New Delhi, India (1998 – 2001)

 

Editor, BOYSCAST News Letter  (1998 -2000)

 


 

 

 

 

Ph.D. Theses guided:

S.No

Name of the student

Title of the Thesis

Year of award

1

N.Balasubramanian

Studies on Evaporated Indium Tin Oxide (ITO) Films and the Junctions of ITO / Si and ITO / GaAs

1989

2

V.Vasu

Investigations on Pyrolytically Sprayed Tin Doped Indium Oxide (ITO) Films and Junctions of ITO / Si and ITO / InP

1991

3

P.Manivannan

Studies on Indium Tin Oxide (ITO) Films and Junctions of ITO / InP Prepared by Reactive e Beam Evaporation

1994

4

Viswanath Bhat Krishna

Studies on Ultra thin oxides of Silicon grown by Wet and Plasma Assisted Oxidation    techniques

2000

5

Ullash Kumar Barik

Studies on electrical and optical properties of silver : indium oxide thin films by reactive DC Magnetron sputtering and reactive electron beam, evaporation technique

2005

6

Umakant Tripathy

Dipole-dipole interaction-induced excitation energy migration and transfer in organic Dye pairs and their non-linear Photophysics

2006

7

Krishna Kumar

Synthesis and applications of rare earth based AB2 alloy hydrides and carbon nanotubes

2007

8

A.Karuppasamy

Studies on the physical properties and electrochromic performance of pure and titanium doped  tungsten oxide thin films prepared by DC magnetron sputtering  

2007

9

Muthu Karuppasamy

Studies on the electrochromic and photocatalytic properties of pure and vanadium doped tungsten oxide thin films preprared by electron beam evaporation and DC Magnetron sputtering techniques

 

2008 Thesis being submitted

10

Krishna Valleti

Investigations on an innovative rotating cylindrical magnetron cathode and on tantalum based hard coatings

2008 Thesis being submitted

11

Hari babu

Magnetic Properties of Some cubic laves phase compounds containing Pr,Sm,Nd,Tb and Fe

2008 Thesis being submitted

 

 

 

 

M.Tech Theses/ Projects guided:

 

 

S.No

Name of the student

Title of the Thesis

Year of award

1

A. Ajit Kumar

 

Computer aided design for under water piezoelectric transducers

1987

2

R. Premachandran

 

Design, fabrication and characterisation of 100 KHz piezoelectric transducer

1988

3

A. Arun

Computer simulatio of Transparent conducting oxides on semiconductors and experimental studies on ZnO/Si and  ZnO/GaAs junctions.

1990

4

Ms A.Amrita   

Studies on metal Insulator Semiconductor (MIS) Solar Cells

1994

5

Bikash Kumar

 

Studies on Indium Oxide on Silicon Photovoltaic Junctions

1995

6

Ms.Anulekha Manjari

Low Dielectric Constant materials For Inter Layer Dielectrics in VLSI

2001

7

G.Vamsi Charan

Fabrication of MIS Tunnel Transistors

2001

8

Sanjay Mangal

 

Study of Wafer – to – Wafer Fusion Bonding for Sensor Applications

2002

9

Munish Kumar

 

Deposition and characterization of Nano Porous Silica Xerogel Film for use as Interlayer Dielectric in VLSI

2002

 

 

 

 

Research Publications in refereed Journals:

 

89.  2008         Studies on phase dependent mechanical properties of DC magnetron

sputtered TaN thin films: Evaluation of super hardness in orthorhombic Ta4N phase

 

Krishna Valleti, A. Subrahmanyam , Srikant V. Joshi, A. R. Phani, M. Passacantando and S. Santucci

                        J.Phys D.Appl.Phys (In Print)

 

88.   2007        Magnetostriction of Tb0.1Ho0.9-xPrx(Fe0.9B0.1)2 (x=0-0.4) compounds

           

                        V.Hari Babu, A.Subrahmanam and G.Markandeyulu

                        J.Appl.Phys (In Print)

 

87.   2007       Magnetostriction of TbxHo0.75-xPr0.25(Fe0.9B0.1)2 (x=0-0.3)

compounds

           

                        V.Hari Babu G.Markandeyulu and A.Subrahmanyam

                        J.Magn.Magn.Mater (In Press)

 

86.  2007         Growth of nano crystalline near α - phase Tantalum thin films at room

                        temperature using cylindrical magnetron cathode

 

       Krishna Valleti, A. Subrahmanyam and Shrikant V. Joshi

                        Surface and Coatings Technology (In Print)

 

85.    2008       Results on the electrochromic and photocatalytic properties of vanadium

         doped tungsten oxide thin films prepared by reactive dc magnetron

         sputtering technique

 

                        K Muthu Karuppasamy and A Subrahmanyam

                        J.Phys.D Applied Phys, vol 41  035302

 

84.  2007 Studies on electrochromic smart windows based on titanium doped WO3

thin films

 

                        A.Karuppasamy and A.Subrahmanyam

                        Thin Solid Films  vol 516 pp 175-178

 

83.       2007    Giant magnetoresistance in Sm1-xNdxFe1.93 compounds

                       

V.Haribabu, G.Markendeyulu and A.Subrahmanyam

                        Appl Phys Lett  vol 90, pp 252513-16

 

 

82.       2007 Studies on the Oxygenation of human blood by Photocatalytic action

 

          A.Subrahmanyam, T.Arockia Doss and  T.Paul Ramesh

                        Artificial Organs  vol 31, pp 819-825

 

81.      2007 Electron beam induced coloration and luminescence in layered structure of  WO3 thin films grown by pulsed dc magnetron sputtering

                       

A.Karuppasamy and A.Subrahmanyam

J.Appl.Phys  vol 101, 113522

 

80.       2007    Oxygenation of human blood using photocatalytic reaction

 

A.Subrahmanyam, TPJ Ramesh and N. Ramakrishnan

                           ASAIO Journal, vol 53 (4), pp 434-437

 

79.  2007 Studies on the room temperature growth of Nano anatase phase TiO2 thin

films by Pulsed DC Magnetron with oxygen as sputter gas

                       

           A. Karuppasamy and A. Subrahmanyam

                        J.Appl.Phys vol 101, 064318

 

          Reprinted in

Virtual Journal of Nanoscale Science & Technology.  April 09, 2007

 

 

78. 2007 The effect of arc suppression on the physical properties of

low temperature DC magnetron sputtered tantalum thin films

 

A.Subrahmanyam, Krishna Valleti, Srikant V Joshi and G.Sundararajan

                        J Vac Sci and Technology  vol 25, pp 378-382

 

77.       2007    Indium doped silver oxide thin films prepared by reactive electron beam

evaporation technique: Electrical properties

 

A.Subrahmanyam and U.K.Barik

J.Materials Science  vol 42, pp 6041-6045

 

76.       2007    Optical and electrochromic properties of oxygen sputtered

Tungsten Oxide (WO3) thin films

                A. Subrahmanyam and A. Karuppasamy

                        Solar Energy Materials and Solar Cells vol 91, pp 266-274

 

75.  2007    Studies on the electrical properties of reactive DC Magnetron sputtered

indium doped silver oxide thin films : the role of oxygen

 

A.Subrahmanyam and U.K.Barik

Physica B  vol 391 pp 54-58

 

74. 2007  Effect of electron bombardment on the properties of ZnO thin films  

                A. Karuppasamy and A. Subrahmanyam

                        Materials Letters vol 61, 1256-1259

73. 2007      A note on fast protonic solid state electrochromic device:

NiOx/Ta2O5/WO3-x

A. Subrahmanyam, C. Suresh Kumar and K. Muthu Karuppasamy

                        Solar Energy Materials and Solar Cells, vol 61, pp 62-66

 

72.       2006    Nano silver oxide thin films  for optical memories : New results

 

A.Subrahmanyam and P.Suman Kumar

                        IETE Journal of Research, vol 52 No 5

 

 

71.       2006  Oxygen sputtered Tungsten oxide thin films for enhanced electrochromic

Properties

 

A.    Subrahmanyam, A. Karuppasamy and C. Suresh Kumar

Electrochemical Solidstate Letters, vol 9 pp H111-H114

 

70.       2006    Pulsed DC Magnetron Sputtered Tantalum Nitride Hard Coatings for

Tribological Applications

 

Aditya Aryasomayajula, Krishna Valleti, A.Subrahmanyam and Deepak G. Bhat

                        Surface and Coatings Technology  vol 201, pp 4401-4405

 

69. 2006         Electrical and optical properties of silver doped indium oxide thin films prepared by reactive DC magnetron sputtering

                        A. Subrahmanyam and Ullash Kumar Barik

J.Phys and Chemistry of Solids  vol 67, pp 1518-1523

 

68.  2006         Electrical and optical properties of reactive DC magnetron  sputtered silver doped indium oxide thin films: role of oxygen

                        A. Subrahmanyam and Ullash Kumar Barik

                                J.Appl.Phys.A vol 84 pp 221-225

67.  2006         Studies on the electrochromic behaior of Lithium and Proton based solid state devices

                        S.Gunasekaran, A.Subrahmanyam, M.Karuppasamy and C.Suresh Kumar

                        ECS Trans. 1, (15) 29 (2006), 

          Volume 1, Issue 15 pp 29-36

208th ECS Meeting, October 16-October 21, 2005, Los Angeles, California

Electrochromics for Energy Efficiency: From the Material to the System

Editor(s): K. Zaghib, F. D'Souza, C. Julien, J. Xu

 

66.   2005        Carrier Transport Mechanism in Indium tin oxide (ITO)/Silicon hetero            

                         Junctions: Effect of Chlorine

                        V. Vasu  and A. Subrahmanyam

                        Applied Physics A   vol 80, pp 823 -827

     

65.  2005       Synthesis of P-type transparent conducting silver: indium

oxide (AIO) thin films by reactive electron beam evaporation technique

                        A.Subrahmanyam and U.K.Barik

                        J.Phys.Chem.Solids vol 66 pp 817-822

 

     

64.  2003           Electrical and Optical properties of Reactive DC Magnetron Sputtered

                         Silver Oxide Thin Films: Role of Oxygen

                         Ullash Kumar Barik, S.Srinivasan, C.L.Nagendra and A.Subrahmanyam

                          Thin Solid Films  vol 429 pp 129-134.

 

 

63.  2002         Optical nonlinearity of organic dyes as studied by Z-scan and transient

grating techniques

U. Tripathy, R. J. Rajesh, P. B. Bisht, and A. Subrahmanyam

Proc.-Indian Acad. Sci., Chem. Sci. 114, 557-564

 

 

62.  2002          Effect of oxide growth temperature on the electrical performance of

                        extremely thin ( ~3 nm) wet oxides of silicon

Vishwanath Krishna Bhat, K. N. Bhat and    A. Subrahmanyam

                         Materials Science and Engineering B  vol 98 pp 140-143

 

61.  2002          Electrical Characterization of MIS capacitors with Xeroxel as Dielectric

                         E.Anulekha Manjari, A.Subrahmanyam, N.Das Gupta and A.DasGupta

                         Applied Physics Letters vol 80, no 10 pp 1800-1803           

 

60.  2001         Electrical and Optical properties of Silver Oxide (Ag2O) Thin Films

                        prepared   by Reactive Electron Beam Evaporation

                         Ullash Kumar Barik and A.Subrahmanyam

Proceedings of 11th Intl Workshop on Physics of Semiconductor Devices, Edited by Vikram Kumar and P.K.Basu, Allied Publishers, pp 1271 – 1274

 

59. 2001         Growth of ultrathin oxides of Silicon by wet oxidation at very low (0.04

                        atm)  water vapor pressure

                       V K Bhat, K N Bhat and A.Subrahmanyam

                       Semicond. Sci. Technol  vol 16 pp 1-5

 

 

58.   2001        Electrical Characterization of Ultrathin Oxides of Silicon Grown by

Wet Oxidation at 8000           

V. K. Bhat, K. N. Bhat and A. Subrahmanyam

                         Solid State Electronics vol 45 pp 1127 - 1135

 

 

57.  2000         Effect of Post Oxidation Annealing of the oxynitride on the C-V and G-V characteristics of Al/thin oxynitride/n-Si tunnel diodes

                        V.K.Bhat, K.N.Bhat and A.Subrahmanyam

                        Semicond.Sci Technol  vol 15 pp 1-5

 

56.  2000         P-type Transparent Conducting In2O3 – Ag2O Thin Films Prepared by Reactive Electron Beam Evaporation Technique

                        J.Asbalter and A.Subrahmanyam

                        J.Vac.Sci and Technology  vol 18 pp 1672 –1676

 

55.  2000         Electrical Characterization of Ultra thin oxides of Silicon Grown by N2O Plasma Assisted oxidation

                        V.K.Bhat, K.N.Bhat and A.Subrahmanyam

                        J.Eletronic Mater. Vol 29  pp 399- 404

 

 

54.  2000         Electrical charcterization of extremely thin (2.7 nm) Oxy nitride and oxide of Silicon grown by N2O Plasma and wet oxidation techniques at low temperatures: A comparison

                        Viswanath Krishna Bhat, K.N.Bhat and A.Subrahmanyam

                        Jap.J.Appl.Phys, vol 39, L159- L 162

 

 

53. 1999          Minority Carrier Life time in Silicon Solar Cells by Short Circuit Current Decay Technique

                        V.Subramanian, A.Subrahmanyam and V.R.K.Murty

                        Proc of 10th Intl Workshop on Physics of Semiconductor Devices, Allied Publishers, 1999, pp 1292-1295

 

52.  1999         Frequency Dependence of Accumulation Capacitance of MOS Structure with Ultra thin Oxide Layer

                        Viswanath K Bhat, K.N.Bhat and A.Subrahmanyam

                        Proc of 10th Intl Workshop on Physics of Semiconductor Devices, Allied Publishers, 1999, pp 341- 344

 

 

51.  1999         Properties of Indium Tin Oxide Thin Films Prepared by Reactive

                        Electron Beam Evaporation Technique for EMI Control

                        J.Asbalter,S.Karunakaran and A.Subrahmanyam

                        Proceedings of the International Conference on Electromagnetic Compatibility and Interference, 1999, IEEE No. 99  TH 8487, pp 366-371                 

 

50.   1999        Effect of pre-oxidation  surface preparation on the growth of ultra thin oxides of silicon

          Viswanath Krishna Bhat, K.N.Bhat and A.Subrahmanyam

                        Semicond.Sci Technol vol 14 ,705 - 709

 

49.       1999    The Growth of Ultra Thin Oxides of Silicon by Low Temperature Wet                             

                        Oxidation Technique             

Viswanath Krishna Bhat, M.Pattabhiraman, K.N.Bhat and A.Subrahmanyam

                        Mat.Res Bull vol 34 No.10    

 

48.       1998    Studies on Indium Tin Oxide (ITO)/n-GaAs Junctions

                                A.Subrahmanyam , Z.Horvath, J.Karanyi and I.Racz

          Proceedings of 2nd World Conference on Photovoltaics, Vienna.

 

47.    1998       Effect of Preoxidation cleaning on the characteristics of Al-thin SiO2-Si Tunnel diodes prepared by Low temperature, Low Pressure wet oxidation

                        Bhat Viswanata Krishna, A.Subrahmanyam and K.N.Bhat

Proceedings of SPIE, The International Society for Optical Engineering, 1 (3316), pp 599 - 603

 

46.       1998    Studies on PECVD grown a Si:Ge alloys

                        K.Seetharaman, P.Senni, E.Bhattacharya and A.Subrahmanyam

Proceedings of SPIE, The International Society for Optical Engineering, 1 (3316), pp 682 - 685

 

45.  1998  Electrical and Photovoltaic study of ITO/GaAs and ITO/InP Hetero junctions

Z.Horvath, A.Subrahmanyam , P.Manivannan, N.Balasubramanian, A.Nemcsics,J.Karanyi, I.Racz and Vo van Tuyen

Proceedings of the 2nd World Conference on Photovoltaic Energy Conversion, Vienna, Austria (July 6-10,1998).

 

44.       1996    Automated REED Type Kelvin Probe Setup for Workfunction and Surface

                        Photovoltage Studies in Semiconductors

 

                        C.Suresh Kumar, A.Subrahmanyam and J.Majhi

                        Rev of Scientific Instr  vol 67 (3) pp 805 - 808

 

43.       1995    Studies on transport Mechanism in Indium Tin Oxide (ITO)/p- Indium                                          

Phosphide InP) Solar Cells Prepared by Reactive Electron Beam Evaporation  and Spray Pyrolysis Techniques

                        A.Subrahmanyam, V.Vasu and P.Manivannan

Proceedings of First World Conference on Photovoltaic Energy Conversion , Dec 5-9,Waikola, Hawaii, USA  pp 1922 -1925

 

 

42.       1995    Characterisation of Silicon:Germanium Alloys by Rutherford Backscattering

                        Technique

                        A.Subrahmanyam

                        Metals Materials And Processes Vol 6 No 4 pp 263 - 268

 

41.       1995    Transport Mechanism of Spray Pyrolytic grown indium tin oxide/ indium

                        phosphide junctions

                        V.Vasu, P.Manivannan and A.Subrahmanyam

                        J.Appl.Phys  vol 77 pp5220

 

 

40.       1994    Electrical Characterisation of Electron Beam Evaporated Indium Tin Oxide                     

                        (ITO)  Indium Phosphide junctions

                        P.Manivannan and A.Subrahmanyam

                        J.Appl.Phys  vol 76  pp 2912 - 2917

 

39.       1993    The dominant scattering mechanism in tin doped indium oxide thin films

                        P.Manivannan and A.Subrahmanyam

                        J.Phys.D:Appl.Phys vol 27 pp 1085

 

38.       1993    Studies on the Electrical and Optical Properties of Reactive Electron Beam

                        Evaporated Indium Tin Oxide films

                        P.Manivannan and A.Subrahmanyam

                        J.Phys. D: Appl.Phys vol 26  pp 1510

 

37.       1993    Spray Pyrolytic Grown ITO/InP Junctions: Effect of Tin Doping.

                        V. Vasu, A. Subrahmanyam, J. Kumar and P. Ramasamy,

                        Semicond. Sci. and Technol. vol 8  pp 437

 

 

36.       1992    Studies of the Photovoltaic Behaviour of Indium Tin Oxide (ITO)/Silicon                        

                        junctions prepared by reactive thermal Evaporation technique

                        A.Subrahmanyam and N.Balasubramanian

                        Semicond. Sci and Tech vol 7  pp 324

 

35.       1992    Effect of Substrate Temperature on the Photovoltaic Properties of In2O3/InP

                        Junctions Prepared by Spray Pyrolysis Technique

                        V.Vasu and A.Subrahmanyam

                        Proceedings of 6th International Photovoltaic Science and Engineering

                        Conference, Feb 10-14, New Delhi (Oxford), pp 1083

 

34.       1992    Photovoltaic Properties of Indium tin oxide (ITO)/ Silicon Junctions                            

                        Prepared by Spray Pyrolysis - Dependence on Oxidation time

                        V.Vasu and A.Subrahmanyam

                        Semicond. Sci and Tech  vol 7 pp 320

 

33.       1992    Photovoltaic properties of sprayed In2O3 - InP junctions.

                        A. Subrahmanyam, V. Vasu, P. Santana Raghavan, J.Kumar and

                        P. Ramasamy,

                        Mat. Sci. and Engg. vol B14   pp 365

 

 

32.       1992    Photovoltaic properties of Spray Pyrolytic Grown Indium Tin Oxide                               

                        (ITO)/Silicon   junctions - Dependence on substrate temperature.

                        V. Vasu and A. Subrahmanyam,

                        Semicond. Sci. & Tech. vol 7   pp 1471

 

31.       1991    Physical properties of sprayed SnO2 films.

                        V. Vasu and A. Subrahmanyam,

                        Thin Solid Films vol 202  pp 283

 

30.       1991    Studies on Evaporated Indium Tin Oxide (ITO)/Si junctions and an

                        estimation  of  ITO Workfunction

                        N.Balasubramanian and A.Subrahmanaym

                        J.Electro Chem Soc vol 138 pp 322

 

 

29.       1990    Studies on the Photovoltaic Characterisatics of Indium Tin Oxide (ITO)/ n-

                        Gallium Arsenide Hetero Junctions

                        N.Balasubramanian and A.Subrahmanaym

                        Solar Cells vol 28 pp 319

 

28.       1990    Electrical and Optical properties of sprayed SnO2 films: Dependence on the

                        oxidizing agent in the starting material.

                        V. Vasu and A. Subrahmanyam,

                        Thin Solid Films vol 193/194  pp 973 

 

 

27.       1990    Schottky diode Properties and the Photovoltaic Behaviour of Indium Tin

                        Oxide  (ITO)/n- GaAs junctions - Efffect of Arsenic Deficient GaAs Surface

                        N.Balasubramanian and A.Subrahmanyam

                        Semicond. Sci and Tech vol 5 pp 871

 

26.      1990     Reaction kinetics of the formation of Indium Tin Oxide films grown by                    spray             pyrolysis.

                        V. Vasu and A. Subrahmanyam,

                        Thin Solid Films vol 193/194  pp 696

 

25.       1990    Electrical and Optical Properties of Sprayed SnO2 films: Dependence on                          

                        oxidising Agent in the Starting Material

                        V.Vasu and A.Subrahmanyam      

                        Thin Solid FIlms  vol 193/194  pp 973

 

24.       1990    Electrical and Optical properties of pyrolytically sprayed SnO2 films-                               

                        Dependence on substrate temperature and substrate- nozzle distance.

                        V. Vasu and A. Subrahmanyam,

                        Thin Solid Films vol 189  pp 217 

 

 

23.       1990    Schottky Barrier at Indium tin oxide / n- GaAs interface - Effect  of Surface

                        arsenic deficiency

                        N.Balasubramanian and A.Subrahmanyam

                        Thin Solid Films vol 193/194  pp 528

 

22.       1989    Electrical and optical Properties of reactively Evaporated Indium Tin Oxide                    

                        (ITO)   Films -Dependence on Substrate Temperatures and Tin  Concentration

                        N.Balasubramanian and A.Subrahmanyam

                        J.Phys. D: Appl.Phys vol 22 pp 206             

 

                        (Also appeared in Engineering Optics May 89 issue)

 

21.       1988    Effect of Substratre temperature on the Electrical and Optical Properties of

                        reactively Evaporated Indium Tin Oxide films

                        N.Balasubramanian and A.Subrahmanyam

                        Mat.Sci and Engg vol B1 pp 279

 

20.       1988    Dielectric Properties of HgCl2:2KCl:H2O single Crystals in the rf range

                        S.Sree Hari Sastry, G.Satyanandam, A.Subrahmanyam and           V.R.K.Murty

                        phys.stat.solidi(a) vol 105 pp K71

 

 

19.       1986    Role of Impurities in Zn3P2 Crystals

                        A.Subrahmanyam, K.R.Murali and J.Sobhanadri

                        J.Materials Science and Engineering  vol 79 pp 239

 

18.       1986    Dielectric Properties of CsBr Single Crystals - Effect of DC Bias

                        K.V.S.Badarinath and A.Subrahmanyam

                        Solid State Communications vol 58 pp 137

 

17.       1986    Effect of DC Bias on the Dielectric Properties of Rutile Crystals

                        S.Sree Hari Sastry, C.R.K.Murty and A.Subrahmanyam

                        J.Materials. Science Letters vol 5 pp 859

 

16.       1986    Dielectric Properties of Tetra methyl ammonium tri and tetra halo  mercurates

                        S.Sree Hari Sastry, C.R.K.Murty and A.Subrahmanyam

                        phys.stat.solidi(a) vol 95 pp K57

 

15.       1985    Dielectric Properties of Zn3P2 Crystals

                        A.Subrahmanyam, K.R.Murali, B.S.V.Gopalam and J.Sobhanadri

                        phys.stat.solidi(a) vol 88 pp 681

 

 

14.       1985    Dielectric Properties of KCl and NaCl Crystals -Time effects

                        A.Subrahmanyam

                        Solid State Communications vo l55 pp 1127

 

13.       1984    Dielectric Properties of RbCl Single crystals

                        A.Subrahmanyam and K.V.S.Badarinath

                        phys.stat.solidi(a) vol 84 pp K83

 

12.       1983    Optical absorption and Thermoluminiscence of KCl Single crystals coloured                  

                        under   DC fields

                        A.Subrahmanyam

                        phys.stat.solidi(a) vol 78 pp 665

 

11.       1983    Effect of DC Field and X irradiation on the optical Absorption and

                        Thermoluminiscence of NaCl Single crystals

                        A.Subrahmanyam

                        phys.stat.solidi(a) vol 77 pp 45

 

10.       1982    Dielectric Properties of KCl single Crystals

                        A.Subrahmanyam and K.V.Rao

                        Ind.J.Phys vol 56A, pp 181

 

9.         1982    Dielectric Properties of NaCl and KCl Single Crystals X irradiated Under 

                        Different DC Fields

                        A.Subrahmanyam

                        phys.Stat.solidi(a) vol 69 pp 773

 

8.         1979    Effect of DC Field and X ray Irradiation on the F band Absorption and

                        thermoluminiscence of NaCl Single  crystals

                        A.Subrahmanyam and K.V.Rao

                        Ind.J.Pure and Appl. Phys vol 17 pp 469

 

7.         1979    Effect of DC Biasing Field on the Dielectric Constant   of Rutile Single

                        Crystals

                        A.Subrahmanyam, K.V.Rao and H.N.Bose

                        Ind.J.Phys vol 53A, pp 30

 

6.         1979    F band Absorption and Thermoluminiscence of KCl Single Crystals under

                        DC  field and X ray  Irradiation

                        A.Subrahmanyam and K.V.Rao

                        phys.Stat Solidi (a) vol 52 pp K147

 

5.         1979    Dielectric Properties of Paddy

                        A.Subrahmanyam and K.V.Rao

                        Il Riso (Italy) vol 28 pp 183

 

(Based on this work, a moisture meter has been developed in IIT Kharagpur, India  being used by farmers)

 

4.         1979    Estimation of vacancy concentration in X irradiated  NaCl Single crystals        

                        using   thermal expansion  measurements

                        A.K.Gupta, K.V.Rao and A.Subrahmanyam

                        J.Phys.D: Appl.Phys vol 12 pp L131

 

3.       1979      Effect of DC biasing field on the dielectric constant of Rutile Single crystals

                        A.Subrahmanyam, K V Rao and H N Bose

                        Indian Journal of Physics vol A 53 (1-2) 30-34

 

2.         1979    Dielectric Properties and Short range Interaction Polarisation of CsBr Single

                        Crystals

                        A.Subrahmanyam , A.K.Gupta and K.V.Rao

                        Ind.J.Pure and Appl. Phys. vol 17 pp 445

 

1.         1977    Dielectric Properties of Cr2O3 Single Crystals

                        K.V.Rao and A.Subrahmanyam

                        Ind.J.Pure and Appl. Phys vol 15, pp 359

 

 

Contributed Chapters/Papers in Books:

 

1.         1992    Studies on ITO/Si Junctions Prepared by Spray Pyrolysis technique

                        A.Subrahmanyam and V.Vasu

                        Solid State materials, Ed S.Radhakrishna and A.Daud

                        Narosa Publishing Co, New Delhi  pp 264

 

 

2.         1993    Analysis of Semiconductor Surfaces: the Kelvin's Probe

                        A.Subrahmanyam

                        Semiconductor Materials, Characterisation Techniques,

                        Ed P.R.Vaya

                        Narosa Publishing , New Delhi  pp 192

 

 

3.         1993    Photovoltaic Properties of Reactive Thermal Evaporated Indium Oxide (IO)/

                        Silicon junctions

                        A.Subrahmanyam

                        NATO ASI Series  Ed. Orlando Auciello and Jurgen Engemann,

          Kluwer Academic Publishers,  vol 234  pp 389

 

 

 

 

 

 Papers presented in International Conferences:

 

1.                  1987    Effect of Substrate Temperature on the electrical and Optical properties of ITO  Films

                        N.Balasubramanian and A.Subrahmanyam

                        International Conference on Solid Films and Surfaces

                        Hamamtsu, Japan October, pp 352

 

2.         1987    Dependence of Electrical and Optical properties of Indium oxide films on 

                        Substrate temperature

                        N.Balasubramanian and A.Subrahmanyam

                        IV Intl Workshop on Physics of Semiconductor Devices

                        December 10-15, IIT Madras, pp 101-104

 

3.         1988    Investigations on ITO/n-GaAs heterojunctions

                        N.Balasubramanian and A.Subrahmanyam

Intl Conf and Intensive Tutorial Course on Semiconductor Materials and Devices, Dec 8-13, New Delhi, pp 120-121      

 

 

 

4.        1989     Electrical and Optical Properties of ITO Films and ITO/Si Junctions Prepared  by DC Magnetron Sputering

                        A.Subrahmanyam and Ron P Howson

                        7 Intl Conference on Ion and Plasma Assisted Techniques,

                        31 May - 2 June, Geneva, pp 310-314

 

5.        1990     Reaction Kinetics of the formation of Indium Tin Oxide Films Grown by                          Spray  pyrolysis

                        V.Vasu and A.Subrahmanyam

17 Intl Conference on Metallurgical Coatings and Thin Films, 2-6 April,San Diego, USA, pp 696-703

 

6.         1990    Electrical and Optical Properties of SnO2 films: Dependence on Oxidizing

                        agent   in the Starting Material

                        V.Vasu and A.Subrahmanyam

17 Intl Conference on Metallurgical Coatings and Thin Films, 2-6 April,San Diego, USA, pp 973 - 980

 

7.         1990    Schottky Barrier at Indium tin oxide (ITO) n- GaAs interface: Effect of

                        Arsenic  Deficiency

                        N.Balasubramanian and A.Subrahmanyam

17 Intl Conference on Metallurgical Coatings and Thin Films, 2-6 April, San Diego, USA, pp 528 - 535

 

8.         1992    Effect of Substrate temperature on the Photovoltaic  behaviour of In2O3/InP prepared by spray pyrolysis technique.

                        V. Vasu and A. Subrahmanyam,

                        Proc. 6th International Photovoltaic Science and Engineering                                                          Conference,Feb. 1992, New Delhi, India, p. 1083.

 

9.         1992    Photovoltaic Properties of Reactive Thermal Evaporated Indium Oxide (IO)/

                        Silicon junctions

                        A.Subrahmanyam

NATO ASI  School on Multicomponent, Multifilms for Microelectronics Applications, Bad Windsheim, Germany, October 1992,  pp 192

           

10.       1993    X Ray Photoelectron Spectroscopy (XPS) studies of InP Surface

                        P.Manivannan and A.Subrahmanyam

Proceedings of 7th International Workshop on Physics of Semiconductor Devices, New Delhi  pp 447

 

11.       1994    Anomolous Current  Transport Through GaAs and InP Schottky Junctions

L.Liptak, J.Karnyi, Zs.Horvath, Vo Van Tuyen and B.Szentpali, P.Manivannan and A.Subrahmanyam

XXIII International School On Physics of Semiconducting Compounds, Jaszowiec, Poland   May 30 –June 3.    

 

12.       1994    Anomalous Current Transport Through AIIIBV Schottky Junctions

Zs Horvath, L.Liptak, Vo Van Tuyen, J.Karanyi, L.Csontos,B.Szentpali,A.Bosacchi,S.Franchi,E.Gombia,R.Mosca, P.Manivannan and A.Subrahmanyam

                        17 Annual Semicond Conf. CAS 94, Sinaia, Romania, Oct 11-16.

 

13.       1994    Studies on transport Mechanism in Indium Tin Oxide (ITO)/p-Indium

                        Phosphide (InP) Solar Cells Prepared by Reactive     ElectronBeam Evaporation and Spray Pyrolysis Techniques

                        A.Subrahmanyam, V.Vasu and P.Manivannan

First World Conference on Photovoltaic Energy Conversion , Dec 5-9,Waikola, Hawaii, USA

 

14.       1995    Capacitance - Voltage Analysis of a complex interface

                        A.Subrahmanyam

                        V International Workshop on Physics of Semiconductor Devices

                        New Delhi, December 5-8, 1995.

 

List to be updated

 

 

Sponsored Research Projects:

   

1.     Preparation and Characterisation of Indium Tin Oxide (ITO)  Heterostructures

 

Council of Scientific and Industrial Research (CSIR), Government of India

 

        Sanction number : 3(596)/86 - EMR II dated November 1986

        Duration of the project: August 87 till August 90

        Cost of the project: Rs 265, 000   

 

 

2.     Studies on the heterojunctions of Indium Tin Oxide (ITO) / Silicon prepared by Spray pyrolysis and Electron Beam Evaporation Techniques.

 

Council of Scientific and Industrial Research (CSIR), Government of India

 

        Sanction number : 3 (699)/ 91 - EMR II dated February 91

        Duration of the project : March 1991 till February 1993

        Cost of the project : Rs 212,000

 

 

3.     Investigations of the effect of Gamma Irradiation on Indium Tin Oxide (ITO) Based Heterostructures Prepared by Electron Beam Evaporation Technique

 

          Department of Atomic Energy (DAE), Government of India

 

        Sanction number : 34/6/88 - G dated May 88

        Duration of the project: August 89 till October 94

        ( with a break between August 91 till August 93)

        Cost of the project : Rs 425,000

 

 

4.     Fabrication of Contact Potential Difference Setup for  Surface/ Interface Analysis of Semiconductor materials and Devices

 

Department of Science and Technology (DST), Government of India

 

        Sanction number : SP/S2/M24/ 87 dated February 1988

        Duration of the project : October 1988 till September 1992

        Cost of the project : Rs 653,000

 

5.     Preliminary Investigations and Feasibility Studies on ZnO/Si and ZnO/Ge Hetero junctions

Department of Science and Technology (DST), Government of India

        Project sanctioned under the Young Scientists Scheme

        Sanction number : SP/OY/P05/89 dated Sept 1990

        Duration: October 1990 till September 1992

        Cost : Rs 100,000

 

        This project has been merged both in working and budget with the other project of DST (sanction number SP/S2/ M 24/ 87).

 

 

6.     Studies on the Growth Parameters of Silicon : Germanium Alloys Prepared by PECVD Technique

 

Department of Science and Technology (DST), Government of India

        Sanction number : SP/S2/M21/93  dated 05.05.94

        Total budget in the project (Phase 1): Rs 700,000

        Date of completion: October 1997.

 

7.     Development of Optical Lens coater

 

Council of Scientific and Industrial Research (CSIR), Government of India

        Sanction number : 03(0760)/94/EMR II dated November 94

        Duration: TWO years

        Total budget in the Project : Rs 3,50,000

 

 

8.     Evaluation of Process Induced Defect Levels in Plasma Enhanced Chemical Vapour Deposited (PECVD) Silicon: Germanium Alloys

 

          Indo - US Project

        Sanction number: DST/INT/USIF/476/95 dated 16.08.95

        Duration : Three Years ( August 1995 – December 2000)

        Total Budget in the Project: Rs 1,922,440

 

 

9.     Publication of BOYSCAST News Letter

        Department of Science and Technology, Government of India

        Duration : Two years  (March 1999 – February 2001)

        Sanction number : HRU/BYS/04/97

        Total Budget: Rs 3,12,000

 

 

10.        Technology Development for Indium tin oxide (ITO) coatings on plastic and glass for EMI Suppression

 

Department of Electronics (Now known as Ministry of Information Technology, Government of India)

Sanction number: 2(1)/99-M&C dated 20.07.99

Duration : One and half years   (October 99 – May 2001)

Total budget: Rs 790,000

 

11.       Investigations on p-type conducting and transparent Oxide Thin Films by DC Magnetron Sputtering Technique

 

        Council of Scientific and Industrial research (CSIR)

       

        Sanction Number:  3(0934)/01/EMR –II

        Duration: April 2001 – March 2004 (Three Years)

        Total Budget       : Rs 588,000

        (Suspended after one year : April 2002)

 

12.   Development of genetic Algorithm to study the structure of Complex systems

(As Co-Investigator) Principal Investigator is Prof Maha Seshasayee

Department of Science and Technology, Government of India

 

Sanction number F.26-4/99 TS dated 21.3.2000-08-10

Duration: Three Years

Total budget: Rs 8,72,496/

 

13.    Development of Quality Assured process Technology for ITO coatings on Aluminized Kapton Films for Space Applications

Indian Space Research Organization (ISRO)

        Sanction number : ICSR/ISROIITM/PHY/074/0203/ASUB

    Value of the project:  :Rs 3,24,300

        Duration     : ONE YEAR

 

14.    Silver Doped Indium Oxide Thin Films for Space Applications

Indian Space Research Organization (ISRO)

        Sanction number : ICSR/ISROIITM/PHY/067/01-02/ASUB

        Duration     : May 2001 – May 2004  (Three Years)

        Total budget       : Rs 896,400

 

 

15.    PHOTOELECTROCHEMICAL PRODUCTION OF HYDROGEN AND STORAGE OF HYDROGEN IN COMPOSITE MATERIALS

          Ministry of Human Resource Development

       

Duration: TWO Years

        Value of the Project: Rs.  14.91 lakhs

 

 

16.    Investigations on the reaction kinetics of silane glow discharge plasma in high frequency

       

Department of Science and Technology, Government of India

 

        Sanction number: SP/S2/K-11/99 dated 11.07.2001

        Duration : February 2003 -  March 2006

        Total Budget : Rs 1,891,000

 

 

 

17.    Studies on Silver and Copper based Oxide Films  for New and Novel p- type  Transparent Conducting Oxides (TCO)

          Defence Research and Development Organization (DRDO)

          Sanction number: ERIP/ER/00200174/M01

        Value of the project     : 23.48 lakhs

        Duration : TWO Years

 

18.    Development of Solid State Electro Chromic Device for Medical Applications

John F. Welch Technology Centre, GE India Technology Centre Pvt. Ltd. ,

        Bangalore, India

        Duration : ONE year (January – December 2004)

        Value : Rs 13.50 Lakhs

 

 

19.    Thin Films of Indium Gallium Nitride (IGN) for Optoelectronic and Photovoltaic Applications : Basic Studies

 

        Defence Research and Development Organization, Govt of India

       

        ERIP/ER/0300210/M/01/ dated 15 January 2004

        Duration : THREE Years (March 2004 – February 2007)

        Value :              41.5 lakhs

 

20.       Investigations and Development of  Nano Silver Oxide for Optical Memories

Department of Information Technology, Government of India

20(8)/2003-VCND dated 03 March 2004

Duration : TWO Years (April 2004 – March 2007)

       Value : 31.5 Lakhs

21.       Technology Development for Indium Tin Oxide Coatings on Video Monitors (Phase II)

 

Department of Information Technology, Government of India

1(6) 2003-M&C dated 24 March 2004

Duration : TWO Years (April 2004 – March 2006)

Value : 98.0 Lakhs

 

22.    Vanadium Oxide Thin Films for temperature Sensor

and Thermal Control Applications: Exploratory Studies

      

        Indian Space Research Organization (ISRO)

        ICSR/ISROIITM/Phy/0405/090/ASUB

        Duration: Three years  : April 2005 – September 2007,    

Value : Rs 200,8000

 

23.        Nano thin films for Medical applications

 

Department of Information Technology, Govt of India

 

Phy/06-07/185/DITX/ASUB

Duration: Two years : December 2006 – November 2008

Value: 24.20 Lakhs

 

24.    Studies on Surface Plasmon Resonance Enhanced Fluorescence of Nano Silver Oxide doped / mixed with Gold and Copper for Ultra High Density Optical Memories

Department of Information Technology, Govt of India

        Duration : TWO years

        Value : 47.00 Lakhs

 

Three more projects are in pipeline.