Schottky diode; p-n junction diode; Application of Nanostructures in Solar cell and optoelectronic devices.

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1 CURRICULUM VITAE Dr. RABINDRA NATH GAYEN Assistant Professor Department of Physics Presidency University 86/1 College Street Kolkata rabin.physics@presiuniv.ac.in rabin.gayen@gmail.com Phone No: RESEARCH INTEREST: Optoelectronic Materials: o Synthesis and Characterization of various inorganic Nanoparticles, Nanorods and Nanowires and their use in different Device applications. o ZnO and GaN, homojunction, heterojunction and Schottky diode in nanocrystalline thin film form; Photovoltaic Devices; Light Emitting Diodes (LED); Field Effect Transistor (FET). o Gas sensor. o Thin film solar cells Schottky diode; p-n junction diode; Application of Nanostructures in Solar cell and optoelectronic devices. Photoluminescence; Raman spectroscopy Diamond like carbon (DLC) thin films and Carbon nano tubes (CNT) for various application EDUCATION: Ph.D. in Material Science (2010) from Jadavpur University*, India Masters of Science in Physics (2006) from Jadavpur University, India Specialization: Condensed matter physics. Bachelor of Science in Physics (2004) from Jadavpur University, India 1

2 * Department of Instrumentation Science, USIC Building, Jadavpur University, Kolkata, , India THESIS: Oxide Semiconductors in Thin Film Form for Device Applications PRESENT POSITION: Assistant Professor Department of Physics Presidency University 86/1 College Street Kolkata ACADEMIC AWARDS: Qualified National Eligibility Test (NET) Examination, Gov. of India (2006). Qualified Graduate Aptitude Test for Engineering (GATE) Examination, Gov. of India (2006). Awarded Junior and Senior Research Fellowship by University Grants Commissions, Government of India. Best Poster Award, Symposium on Current Trends in Nano Science and Technology, ABVIIITM, Gwalior, India. Second Best Poster Award, National Seminar on Recent Advances in Materials Sciences, Dept. of Physics, I.S.M. University, Dhanbad, India. PUBLICATIONS: National & International Journals : 25 National & International Conference : 02 TECHNICAL SKILLS: Thin film deposition: RF plasma CVD. Sputtering (DC and RF magnetron); Evaporation (Thermal, E- beam and Flash). Pulsed Laser deposition Hybrid wet chemical route, electro deposition, chemical bath deposition (CBD) etc. Analytical: SEM, Photoluminescence (PL) (8 K), AFM, FTIR, RAMAN measurements, XRD, I-V and C-V, Field Emission, UV-VIS- NIR spectrophotometer, TEM, EDAX, XPS, Four probe electric 2

3 and magnetic measurements (variable temperature), VSM, Static-MOKE etc. PROJECT DETAILS: Project Title: Solution-processed nanostructured superstrate CZTS solar cells Role of the Faculty Member: PI Funding Agency: DST under the scheme 'Start Up Research Grant (Young Scientists)' Amount of Funding: Rs. 22,20, ( ) PUBLICATIONS IN DETAILS: Papers in Referred Journals: [1] R. Paul, R. N. Gayen, S. Biswas, S. Venkataprasad Bhat, R. Bhunia, " Enhanced UV detection by transparent graphene-oxide/zno composite thin films" RSC Advances, 6 (66) (2016) (Impact Factor ) [2] R N Gayen and R Paul, "Fabrication of vertically aligned Phosphorous doped ZnO nanowires" Nano Structures and Nano Objects, Article in press (2016). DOI: /j.nanoso [3] R N Gayen and S R Bhattacharyya, "Electrical Characteristics and Rectification performance of wet chemically synthesized vertically aligned n-zno nanowire/p-si Heterojunction" Journal of Physics D: Applied Physics, 49 (2016) (Impact Factor ) [4] R N Gayen and P Laha, "Single step synthesis and optical properties of Fe-Ag bimetallic nanoparticles", (Accepted for publication) Journal of Nanoscience and Nanotechnology (Impact Factor ) [5] R N Gayen and R Paul, "Nanocrystalline Zn 1-x Mn x O thin film based transparent Schottky diodes" Thin Solid Films, 605 (2016) (Impact Factor ) [6] R N Gayen, S R Bhattacharyya and P Jana; "Temperature dependent current transport of Pd/ZnO nanowire Schottky diodes" Semicond. Sci. Technol. 29 (2014) (Impact Factor ) [7] R.N.Gayen, S. Hussain, D. Ghosh, R. Bhar, A.K. Pal Two-source coevaporation technique for synthesis of indium phosphide films with controlled composition Journal of Alloys and Compounds, 531 (2012) (Impact Factor ) 3

4 [8] R. N. Gayen, S. Hussain, R. Bhar and A.K.Pal Synthesis and characterization of Indium phosphide films prepared by co-evaporation technique. Vacuum, 86 (2012) (Impact Factor ) [9] S. Hussain, R. N. Gayen, M. B. Dutt and A.K.Pal Surface modification of GaAs induced by argon ion implantation, Indian Journal of Pure and Applied Physics, 50 (2012) 650. (Impact Factor ) [10] R.N.Gayen, S.Hussain, A.K.Pal, CdS/ZnO nanorods as novel window layer for solar cell application, Journal of Nano Energy and Power Research 1 (2011) [11] M.K.Sharma, R.N.Gayen, A.K.Pal, D. Kanjilal, R.Chatterjee, Room Temperature Ferromagnetism in Mn doped ZnO nanorods prepared by hybrid wet chemical route, Journal of Alloys and Compounds 509 (2011) (Impact Factor ) [12] M.K. Sharma, R.N. Gayen, A.K. Pal, D. Kanjilal and Ratnamala Chatterjee, Complex impedance spectroscopy of Mn-doped Zinc Oxide nanorods films, Article in press, Solid State Communications (2011). (Impact Factor ) [13] R.N.Gayen, K. Sarkar, S.Hussain, R. Bhar, A.K.Pal, ZnO thin films by modified sol-gel technique, Article in press, Indian Journal of Pure and Applied Physics (2011). (Impact Factor ) [14] R.N.Gayen, A.Rajaram, R. Bhar, A.K.Pal, Ni-doped vertically aligned Zinc Oxide nanorods prepared by hybrid wet chemical route, Thin Solid Films 518 (2010) (Impact Factor ) [15] R.N.Gayen, S.N.Das, S.Dalui, R.Paul, A.K.Pal, Indium Phosphide films prepared by flash evaporation technique: synthesis and characterization, Thin Solid Films 518 (2010) (Impact Factor ) [16] R.N.Gayen, A.K.Pal, Growth of carbon nanofibers on aligned Zinc Oxide nanorods and their field emission properties, Applied Surface Science 256 (2010) (Impact Factor ) [17] R.N.Gayen, R. Bhar and A. K. Pal, Synthesis of vertically aligned ZnO nanorods with controlled aspect ratio and number density, Indian Journal of Pure and Applied Physics 48 (2010) 385. (Impact Factor ) [18] R.N.Gayen, S.Majumder, S. verma, A.K.Pal, Synthesis of vertically aligned Mn doped ZnO nanorods by hybrid chemical route, Materials Chemistry and Physics 123 (2010) 138. (Impact Factor ) 4

5 [19] R.N.Gayen, S. Dalui, A. Rajaram, A.K. Pal, Modulation of field emission properties of vertically aligned ZnO nanorods with aspect ratio and number density, Applied Surface Science 225 (2009) (Impact Factor ) [20] S.N. Das, S. R. Bhattacharyya, R.N.Gayen and A.K. Pal Optical properties of Si-doped GaN nanocrystals in SiO 2 /GaN/SiO 2 thin film structure, J. phys.d:appl. Phys. 42 (2009) (Impact Factor ) [21] S.R.Bhattacharyya, R.N.Gayen, R.Paul, A.K.Pal, Determination of optical constants of thin films from transmittance traces only, Thin Solid Films 517 (2009) (Impact Factor ) [22]. R. Paul, R.N. Gayen, S.Hussain, V.Khanna, R.Bhar, A.K.Pal Synthesis and characterization of composite films of silver nanoparticles embedded in DLC matrix prepared by plasma CVD technique, Eur. Phys. J. Appl. Phys. 47 (2009) (Impact Factor ) [23] S. Dalui, S. N. Das, R. K. Roy, R. N. Gayen and A. K. Pal, Aligned ZnO nanorods by hybrid wet chemical route and their field emission Properties, Thin Solid Films 516 (2008) (Impact Factor ) [24] R.N. Gayen, S.N. Das, S. Dalui, R. Bhar, A.K. Pal, Zinc magnesium oxide nanofibers on glass substrate by solution growth technique, Journal of Crystal Growth 310 (2008) (Impact Factor ) [25] R. Paul, S. N. Das, S. Dalui, R. N. Gayen, R. K. Roy, R.Bhar and A. K. Pal, Synthesis of DLC films with different sp2/sp3 ratio and their hydrophobicity Behavior, J. Phys D: Appl. Phys. 41 (2008) (Impact Factor ) Papers in Conference Proceedings: [24] D.Chakraborty, R. N. Gayen, S. Hussain, R. Bhar, A. K. Ghoshal and A. K. Pal, ZnO/Ti Thin Film: Synthesis, Characterization and Methane Gas Sensing Property, Journal of Physics: Conference Series, 390 (2012) (Conference proc. of International Symposium on Vacuum Science & Technology and its Application for Accelerators, February 2012, VECC, Kolkata, India) [25] R. N. Gayen, S. Hussain, R. Bhar and A. K. Pal, Structural evolution of indium phosphide films prepared by co-evaporation technique, Solar Asia-2011, Proceedings of the International conferrence on solar energy materials, solar cells and solar energy applications, Institute of Fundamental Studies, Kandy, Sri Lanka p

6 Attended/ Paper presented at National & International Conferences: 1. Zinc Magnesium Oxide Nanofibers On Glass Substrate By Solution Growth Technique, R.N.Gayen, S.N.Das, R. Bhar and A.K.Pal, International Workshop on Mesoscopic, Nanoscopic and Macroscopic Materials; 2008, Institute of Materials Science, Bhubaneswar, India. 2. Hydrogen sensor based on thin film nanocrystalline n-gan/pd Schottky diode, S. N. Das, R.N.Gayen and A.K.Pal, International Workshop on Mesoscopic, Nanoscopic and Macroscopic Materials; 2008, Institute of Materials Science, Bhubaneswar, India. 3. Synthesis and characterization of solution grown Zn 1-x Mg x O nanofibers on glass substrates, R.N.Gayen, R.Bhar and A.K.Pal, National Seminar on Recent Advances in Materials Sciences; 2008, Indian School of Mines University, Dhanbad, India. 4. Vertically aligned Zinc Oxide nanorods with controlled aspect ratio and number density: field emission properties, R.N.Gayen, S.Dalui, A.K.Pal, National Conference on Electron Microscopy and Allied Fields and Annual Meeting of EMSI, 2009, Bundelkhand University, Jhansi, India. 5. Nanocrystalline n-gan/pd Schottky diode for hydrogen sensor application, R. N. Gayen, S. N. Das and A.K.Pal, International Workshop on Tailor-Made Nanomaterials and Applications for Chemical and Bio-Sensors; 2009, CGCRI, Kolkata, India. 6. Growth of carbon nanofibers on aligned Zinc oxide nanorods and their field emission properties, R.N.Gayen and A.K.Pal, National Symposium on Vacuum Technology and Its Application to Electronic Devices and Systems, 2009,.CEERI, Pilani, Rajsthan, India. 7. Two source coevaporation technique for indium phosphide films with controlled composition, D. Ghosh, R. N. Gayen, S. Hussain, R. Bhar and A. K. Pal (Poster presented by D. Ghosh) 24 th Annual General Meeting of Materials Research Society of India, at the Indira Gandhi Centre for Atomic Research, Kalpakkam, February 11-13, Attended as invited participant at Singapore-India Programme of Cooperation (POC) Workshop on Advanced Materials and Energy, at IACS, Kolkata, April 21-24, Attended as participant at National Workshop on Application of Radiation in Physical, Chemical and Life Sciences organized by UGC-DAE Consortium for Scientiic Research, Kolkata Centre & Centre for Research in Nanoscience & Nanotechnology, University of Calcutta, September 04-06, Attended the seminar "Bringing the Nanoworld Together" at Saha Institute of Nuclear Physics, Kolkata on November, R N Gayen, P Laha and A Barman; "Fabrication of Magnetic Nanowires by Template Assisted Pulsed Electrodeposition Technique" 'National symposium on Recent Trends in Instrumentation Science and Technology' at Department of Instrumentation Science, jadavpur University, kolkata March

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