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Journal Publications: "Investigation of nature of excitons in PPDT2FBT and effect of optical interference " Subhamoy Sahoo, Dhruvajyoti Barah, Rajdeep Dhar, Soumya Dutta, Debdutta Ray, and Jayeeta Bhattacharyya J. Appl. Phys. (2022)  https://doi.org/10.1063/5.0077448 "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 Sem. Sc. Tech. (2022) https://doi.org/10.1088/1361-6641/ac48db "Investigation of internal fields in the organic semiconductors in presence of traps " Subhamoy Sahoo, B. Pandey, Somnath C. Roy and Jayeeta Bhattacharyya  J. Appl. Phys. (2021) https://doi.org/10.1063/5.0058515 "Enhancing the efficiency of red TADF OLED by optimizing the guest-host matrix and charge balance engineering" Inaganti Naga Sai Manoj, Dhruvajyoti Barah, Subhamoy Sahoo, Jayeeta Bhattacharyya, Debdutta Ray Synth. Met (2020)  https://doi.org/10.1016/j.synthmet.2020.116599 "Charge transfer mediated photoluminescence enhancement in carbon dots embedded in TiO2 nanotube matrix " Anu Babusenan, B. Pandey, Somnath C. Roy and Jayeeta Bhattacharyya  Carbon (2020)  https://doi.org/10.1016/j.carbon.2020.01.097 "Study of exciton-polaron interaction in pentacene field effect transistors using high sensitive photocurrent measurements  " Haripriya Kesavan, Subhamoy Sahoo, S. Jena, Prashanth K. Manda, A. K. Baranwal, Soumya Dutta, Jayeeta Bhattacharyya and Debdutta Ray J. Appl. Phys. (2019)  https://doi.org/10.1063/1.5116412 "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 Syth. Metals (2019)  https://doi.org/10.1016/j.synthmet.2019.116108 "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)  http://dx.doi.org/10.1088/2053-1591/ab1daa "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 (2019) 046402, https://doi.org/10.1088/2053-1591/aaf911 "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 (2016)  http://dx.doi.org/10.1063/1.4942893  “Magnetic control of Coulomb scattering and terahertz transitions among excitons“ J. Bhattacharyya, S. Zybell, F. Eßer, M. Helm, H. Schneider, L. Schneebeli, C. N. Böttge, 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.; Eßer, F.; Helm, M.; Schneider, H.; Schneebeli, L.; Böttge, C. N.; Kira, M.; Koch, S. W.; Andrews, A. M.; Strasser, G. Appl. Phys. Lett. 105, 201109 (2014) http://dx.doi.org/10.1063/1.4902431    “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) “Intersublevel spectroscopy on single InAs-quantum dots by terahertz near-field microscopy” R. Jacob, S. Winnerl, M. Fehrenbacher, J. Bhattacharyya, H. Schneider, M. T. Wenzel, H.-G. von Ribbeck, L. M. Eng, P. Atkinson, O. G. Schmidt, and M. Helm Nano Lett. 12, 4336 (2012) “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) “Phase sensitive monitoring of electron bunch form and arrival time in superconducting linear accelerators”, C. Kaya, C. Schneider, A. Al-Shemmary, W. Seidel, M. Kuntzsch, J. Bhattacharyya, M. Mittendorff, P. Evtushenko, S. Winnerl, G. Staats, M. Helm, N. Stojanovic, P. Michel, and M. Gensch Appl. Phys. Lett. 100, 141103 (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) “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 78, 195312 (2008) “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) “Optical polarization properties of M-plane GaN films investigated by transmittance anisotropy spectroscopy” J. Bhattacharyya, S. Ghosh, B. M. Arora, O. Brandt, and H. T. Grahn Appl. Phys. Lett. 91, 251913 (2007) “Electronic band structure of wurtzite InN around the fundamental gap in the presence of biaxial strain” J. Bhattacharyya, and S. Ghosh Phys. Stat. Sol. (a) 204, 439 (2007) “Polarized photoluminescence and absorption in A-plane InN films”, J. Bhattacharyya, S. Ghosh, M. R. Gokhale, B. M. Arora, H. Lu, and W. J. Schaff Appl. Phys. Lett. 89, 151910 (2006) “Polarized photo-voltage spectroscopy study of InAs/GaAs(001) quantum dot ensembles” J. Bhattacharyya, S. Ghosh, S. Malzer, G. H. Dohler, and B. M. Arora Appl. Phys. Lett. 87, 212101 (2005) “Wavelength modulation spectroscopy using novel mechanical light chopper blade designs” J. Bhattacharyya, S. Ghosh, and B. M. Arora Rev. Sci. Instrum. 76, 083903 (2005)