PHYSICS

Jayeeta Bhattacharyya

Associate Professor

HSB 202B
Ph.D. TIFR Mumbai

📞 044 - 2257 4856
✉️ jayeeta@iitm.ac.in

👤 Personal Home Page

Areas of Interest

✔ Spectroscopic study of semiconductor heterostructures like quantum wells and quantum dots

✔ Time resolved measurements

✔ THz spectroscopy

✔ Optical anisotropy

Current Research

Students

Current PhD Students

✔ PH14D202 SUBHAMOY SAHOO

✔ PH18D027 DINESH KUMAR S

✔ PH19D016 DEVAN C M

✔ PH19D200 AMINAKUTTY N

✔ PH18D050 SAROJ POUDYAL (Co-Guidance)

Recent Publications

✔ Investigation of 4,4'-bis[(N- carbazole) styryl] biphenyl (BSB4) for a pure blue fluorescent OLED with enhanced efficiency nearing the theoretical limit. Dhruvajyoti Barah, Subhamoy Sahoo, N. S. Manoj Inaganti, H. Kesavan, Jayeeta Bhattacharyya and Debdutta Ray . Semiconductor Science and Technology. 37. DOI: 10.1088/1361-6641/ac48db. 2022.
✔ Investigation of internal fields in organic semiconductors in the presence of traps. Subhamoy Sahoo, Dhruvajyoti Barah, Rajdeep Dhar, Soumya Dutta, Debdutta Ray, Jayeeta Bhattacharyya. J. Appl. Phys.. 131. 085702. 2022.
✔ Investigation of internal fields in organic semiconductors in the presence of traps. Subhamoy Sahoo, Rajdeep Dhar, Soumya Dutta, and Jayeeta Bhattacharyya. Journal of Applied Physics. 130. 085702. DOI: doi.org/10.1063/5.0058515. 2021.
✔ Spatial Extent of Interaction between Excitons and Polarons in a Bilayer Organic Field-Effect Transistor. Haripriya Kesavan, Subhamoy Sahoo, Sanjoy Jena, Jayeeta Bhattacharyya, and Debdutta Ray. ACS Photonics. 8. 804. 2021.
✔ Enhancing the efficiency of red TADF OLED by optimizing the guest-host matrix and charge balance engineering. Inaganti Naga SaiManoj, Dhruvajyoti Baraha, Subhamoy Sahoo, Jayeeta Bhattacharyya, DebduttaRay. Synthetic Metals. 270. 116599. 2020.
✔ Charge transfer mediated photoluminescence enhancement in carbon dots embedded in TiO2 nanotube matrix. Anu Babusenan, B.Pandey, Somnath C.Roy, JayeetaBhattacharyya . Carbon. 161. 535. DOI: https://doi.org/10.1016/j.carbon.2020.01.097. 2020.
✔ Optical polarization anisotropy induced by molecular alignment in pentacene films confined in micron sized grooves etched in SiO2 substrate. Anu Babusenan, Sanjoy Jena , Debdutta Ray and Jayeeta Bhattacharyya. Mater. Res. Express . 6 . 046402. DOI: https://doi.org/10.1088/2053-1591/aaf911. 2019.
✔ Investigation of non-linear dependence of exciton recombination efficiency on PCBM concentration in P3HT:PCBM blends. Anu Babusenan, Suman Mondal, Saranya R, Soumya Dutta, Manoj Gopalakrishnan and Jayeeta Bhattacharyya . Mater. Res. Express (2019). DOI: http://dx.doi.org/10.1088/2053-1591/ab1daa. 2019.
✔ Organic field effect transistors (OFETs) of poly(p-phenylenevinylene) fabricated by chemical vapor deposition (CVD) with improved hole mobility. Deepak Bhat, Sanjoy Jena, Anu Babusenan, Jayeeta Bhattacharyya and Debdutta Ray . Synthetic Metals. 2019.
✔ Study of exciton-polaron interaction in pentacene field effect transistors using high sensitive photocurrent measurements. Haripriya Kesavan, Subhamoy Sahoo, Sanjoy Jena, Prashanth Kumar Manda, Amogh Kumar Baranwal, Soumya Dutta, Jayeeta Bhattacharyya and Debdutta Ray . Journal of Applied Physics. 2019.

✔ Inter-sublevel dynamics in single InAs/GaAs quantum dots induced by strong terahertz excitation. D. Stephan, J. Bhattacharyya, Y. H. Huo, O. G. Schmidt, A. Rastelli, M. Helm and H. Schneider . Appl. Phys. Lett.. 108. 082107. DOI: http://dx.doi.org/10.1063/1.4942893. 2016.
✔ Magnetic control of Coulomb scattering and terahertz transition among excitons. J. Bhattacharyya, S. Zybell, F. EÃŸer, M. Helm, H. Schneider, L. Schneebeli, C. N. BÃ¶ttge, B. Breddermann, M. Kira, S. W. Koch, A. M. Andrews, and G. Strasser . Phys. Rev. B. 89 . 125313. 2014.
✔ Characterizing intra-exciton Coulomb scattering in terahertz excitations. Zybell, S.; Bhattacharyya, J.; Winnerl, S.; EÃŸer, F.; Helm, M.; Schneider, H.; Schneebeli, L.; BÃ¶ttge, C. N.; Kira, M.; Koch, S. W.; Andrews, A. M.; Strasser, G. . Applied Physics Letters. 105. 201109. DOI: http://dx.doi.org/10.1063/1.4902431. 2014.
✔ Observation of forbidden exciton transitions mediated by Coulomb interactions in photoexcited GaAs quantum wells. W. D. Rice, J. Kono, S. Zybell, S. Winnerl, J. Bhattacharyya, H. Schneider, M. Helm, B. Ewers, A. Chernikov, M. Koch, S. Chatterjee, G. Khitrova, H. M. Gibbs, L. Schneebeli, B. Breddermann, M. Kira, and S. W. Koch . Phys. Rev. Lett.. 110 . 137404. 2013.
✔ In-plane interdot carrier transfer in InAs/GaAs quantum dots. J. Bhattacharyya, S. Zybell, S. Winnerl, M. Helm, M. Hopkinson, L. R. Wilson, and H. Schneider . Appl. Phys. Lett. . 100 . 152101 . 2012.
✔ Simultaneous time and wavelength resolved spectroscopy under two-colour near infrared and terahertz excitation. J. Bhattacharyya, M. Wagner, S. Zybell, S. Winnerl, D. Stehr, M. Helm, and H. Schneider . Rev. Sci. Instrum. . 82 . 103107. 2011.
✔ Terahertz activated luminescence of trapped carriers in InGaAs/GaAs quantum dots. J. Bhattacharyya, M. Wagner, M. Helm, M. Hopkinson, L. R. Wilson, and H. Schneider . Appl. Phys. Lett. . 97. 031101. 2010.
✔ Are AlN and GaN substrates useful for the growth of non-polar nitride films for UV emission? The oscillator strength perspective. J. Bhattacharyya, S. Ghosh, and H. T. Grahn . Phys. Stat. Sol. (b). 246 . 1184. 2009.
✔ Optical polarization properties of interband transitions in strained group-III-nitride alloy films on GaN substrates with nonpolar orientation. J. Bhattacharyya, S. Ghosh, and H. T. Grahn. Appl. Phys. Lett. . 93. 051913. 2008.
✔ Electroreflectance lineshapes in multilayered semiconductor structures: Influence of the linear electro-optic effect. J. Bhattacharyya, S. Ghosh, B. M. Arora, and T. J. C. Hosea. Phys. Rev. B. 73 . 195312. 2008.

Teaching

✔ 2017 : (Jan - May) - PH1020/ Physics II; (Jul - Nov) - PH5040 Electronics

✔ 2018 : (Jan - May) - PH1020 Physics II; (Jul - Nov) - PH5110 Optics & Photonics/ PH5060 Physics Lab I (PG)

✔ 2019 : (Jan - May) - PH5120 Physics Lab II (PG)/ PH5890 Ultrafast lasers and Applications; (Jul - Nov) - PH5060 Physics Lab I (PG)/ PH5110 Optics & Photonics

✔ 2020 : (Jan - May) - EP3500 Summer Training/ PH5890 Ultrafast lasers and Applications; (Jul - Nov) - PH1010 Physics I

✔ 2021 : (Jan - May) - PH1020 Physics II; (Jul - Nov) - PH5814 Laser Physics and Applications

✔ 2022 : (Jan - May) - PH5813 Principles of Nanophotonics ; (Jul - Nov) - PH5060 Physics Lab I (PG) / PH7090 Foundations in Experiemntal Physics

✔ 2023 : (Jan - May) - PH2080 Physics Lab IV / PH5813 Principles of Nanophotonics