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Dr. Vishnu Awasthi

Dr. Vishnu Awasthi

Associate Professor

[email protected]

Brief Profile

Dr. Vishnu Awasthi is Assistant Professor in Saffrony Institute of Technology since 6th September 2017. He has completed a Ph.D. degree in area of “Investigation of Heterojunction Interface of CIGSe/doped ZnO for Solar Cell Applications” from Discipline of Electrical Engineering, IIT Indore in April 2017. He did M. Tech. in “Laser Science and Application” from School of Physics, Devi Ahilya University, Indore in 2011. He did M. Sc. in Physics from Govt Holker Science College Indore in 2009. He has got selected as project trainee in RRCAT, Indore, where he worked on “Studies on Nanocomposite Organic Photovoltaic Cell.” He was awarded MHRD fellowship during the Ph.D. and worked as Teaching Assistant in IIT Indore from dated July 2012 to September 2016. He was also awarded travel grant for attending the conferences abroad from Science and Engineering Research Board Govt. of India and Centre for International Co-operation in Science (CICS) Govt. of India. He has published in more than 20 peer-reviewed International journals. He also published 12 conference proceedings in the international conferences. He has attendance many of them personally in India and abroad. He has also worked as an Assistant Professor, in Govt. GSITS College, Indore (M.P.) 2011-12. 

Educational Qualifications

Doctor of Philosophy, Ph.D.,  Discipline of Electrical Engineering Indian Institute Technology, Indore, Madhya Pradesh, India 2017.

        Thesis: Investigation of Heterojunction Interface of  CIGSe/doped ZnO for Solar Cell Applications.

Master of Technology  in Laser Science and its application , Devi Ahilya Vishwa Vidyalaya, Indore Madhya Pradesh, India, 2011.

        Thesis: Studies on Nanocomposite Organic Photovoltaic Cells.

Master of Science in Physics, Govt. Holkar Science College Indore, Madhya Pradesh, India 2009.

Bachelor of Science in P.C.M.,  Holkar Science College Indore, Madhya Pradesh, India 2007.

Awards / Achievements

  • Teaching Assistantship during Ph. D. by Ministry of Human Resources Development Govt. of India.
  • Travel grant for attending conference abroad from Science and Engineering Research Board Govt. of India and Centre for International Co-operation in Science (CICS) Govt. of India.

Publications

  • Publications (Peer-reviewed Journals)
  • Impact of sputter-instigated plasmonic features in TCO films: for ultrathin photovoltaic applications, Applied Physics Letters, 110, 103903, 1-4, (2017). (Co-author)
  • Room temperature blue LED based on p-ZnO/ (CdZnO/ZnO) MQWs/ n-ZnO, Journal of Luminescence, 180, 204-208, (2016). (Co-author)
  • Plasmon generation in sputtered Ga:MgZnO films for solar cell applications, Journal of Applied Physics, 119, 233101-233113, (2016). (Co-author)
  • Evaluation of band alignment and valence plasmonic features of DIBS grown Ga-doped Mg0.05Zn0.95O/CIGSe heterojunction by photoelectron spectroscopy, Journal of Physics D: Applied Physics, 48, 485305-485317, (2015). (Co-author)
  • Growth and Characterizations of Dual Ion Beam Sputtered CIGS Thin Films for Photovoltaic Applications, Journal of Materials Science: Materials in Electronics, 25, 3069-3076, (2014). (Co-author)
  • Band alignment and photon extraction studies of Na-doped MgZnO/Ga-doped ZnO heterojunction for light-emitter applications, Journal of Applied Physics, 118, 165301-165307, (2015). (Co-author)
  • Spectroscopic ellipsometry study on electrical and elemental properties of Sb-doped ZnO thin films, Current Applied Physics, 15, 479-485, (2015). (Co-author)
  • Blue electroluminescence from Sb-ZnO/Cd-ZnO/Ga-ZnO heterojunction diode fabricated by ion beam sputtering, Optics Express, 22, issue 25, 30983-30991, (2014). (Co-author)
  • Growth and characterization of dual ion beam sputtered Cu2ZnSn(S,Se)4 thin films for cost-effective photovoltaic application, Solar Energy, 139, 1-12, (2016). (Co-author)
  • Photosensitive ZnO-graphene quantum dot hybrid nanocomposite for optoelectronic applications, Chemistry Select, 1, 1503-1509 (2016). (Co-author)
  • Localized surface plasmon resonance on Au nanoparticles: tuning and exploitation for performance enhancement in ultrathin photovoltaics, RSC Advances, 6, 26216-26226 (2016). (Co-author)
  • Investigation of barrier inhomogeneities and interface state density in Au/MgZnO:Ga Schottky contact, Journal of Physics D: Applied Physics, 49, 445303, 1-10, (2016). (Co-author)
  • Charge transport in thin films of MDMO PPV dispersed with lead sulphide nanoparticles Synthetic Metals 224, 80–85, (2017). (Co-author)
  • Detection of a high photoresponse at zero bias from a highly conducting ZnO:Ga based UV photodetector, RSC Advances, 5, 62603-62614, (2015). (Co-author)
  • Influence of annealing temperature on ZnO thin films grown by Dual Ion Beam Sputtering, Bulletin of Materials Science, 37, 41-47, (2014). (Co-author)
  • Influence of in-situ Annealing ambient on p-type conduction in Dual Ion Beam Sputtered Sb-doped ZnO thin films, Applied Physics Letters, 103, 072109-072114, (2013). (Co-author)
  • p-type conduction from Sb-doped ZnO thin films grown by dual ion beam sputtering in the absence of oxygen ambient, Journal of Applied Physics, 114, 163107-163113, (2013). (Co-author)
  • Behavior of DIBS sputtered MgZnO thin films for different oxygen partial pressure, Journal of Materials Science:Materials in Electronics, 25, 772-777, (2014). (Co-author)
  • Design and growth optimization by dual ion beam sputtering of ZnO-based high-efficiency multiple quantum well green light emitting diode, Nanoscience and Nanotechnology Letters, 6, 146-152, (2014). (Co-author)
  • Effect of oxygen partial pressure on the behavior of dual ion beam sputtered ZnO thin films, Semiconductor Science and Technology, 28, 085014-085021, (2013).
  • Proceedings in International Conference. (Co-author)
  • Band alignment study and plasmon generation at dual ion-beam sputtered Ga:ZnO/Ga:MgZnO heterojunction interface, Compound Semiconductor Week 2016, Toyoma, Japan, June 26-30, (2016). (Co-author)
  • Characterizations of DIBS grown Ga-doped MgZnO thin films for solar cell application,12th International Conference on Fiber Optics and Photonics, IIT Kharagpur, India, December 13-16, (2014). (Co-author)
  • Electronic band alignment of dual ion beam sputtered CIGSe/Mo films for photovoltaic applications, 11th International Conference on Nanosciences and Nanotechnologies (NN14), Thessaloniki, Greece, July 08-11, (2014). (Co-author)
  • CIGS thin film Deposition by Dual Ion Beam Sputtering (DIBS) system for Solar cell Application, 17th International Workshop on The Physics of Semiconductor Devices (17th IWPSD), Amity University, Uttar Pradesh, India, December 10-13, (2013). (Co-author)
  • Band alignment study of ion-beam sputtered Ga:MgZnO/CIGSe heterojunction, 18th International Workshop on The Physics of Semiconductor Devices (18th IWPSD), IISc, Bangalore, India, December 7-10, (2015). (Co-author)
  • Dual ion beam sputtered Cu2ZnSn(S,Se)4 thin films without selenization from a single target, IUMRS-ICYRAM, IISc Bangalore, December 11-15, (2016). (Co-author)
  • Band Alignment Study of Ion-beam Sputtered MgZnO/CIGSe Heterojunction for realization of all Sputtered Solar Cells, IUMRS-ICYRAM, IISc Bangalore, December 11-15, (2016). (Co-author)
  • Effect of electrochemical deposition time on optical properties of graphene quantum dots, 18th International Workshop on The Physics of Semiconductor Devices (18th IWPSD), IISc, Bangalore, India, December 7-10, (2015). (Co-author)
  • Effect of localized surface plasmon resonance of Au nanoparticles in photovoltaic applications, 18th International Workshop on The Physics of Semiconductor Devices (18th IWPSD), IISc, Bangalore, India, December 7-10, (2015). (Co-author)
  • Study of interface states in Au/MgZnO:Ga schottky contact grown by dual ion beam sputtering, 18th International Workshop on The Physics of Semiconductor Devices (18th IWPSD), IISc, Bangalore, India, December 7-10, (2015). (Co-author)
  • Self-powered high photoresponse GaZnO ultraviolet photodetector, 18th International Workshop on The Physics of Semiconductor Devices (18th IWPSD), IISc, Bangalore, India, Dec 7-10, (2015). (Co-author)
  • Growth of Sb-doped p-type ZnO thin films by dual ion beam sputtering, 3rd NANO Today  (2013 Conference, Biopolis, Singapore, December 08-11,  (2013). (Co-author)

Technical Software Skills

Languages: C, C++  

Software   :  MS Origin, Mat lab.

Professional Work Experience

  • Dual Ion Beam Sputtering Deposition of group II-VI materials, metals, dielectrics Photoluminescence and electroluminescence measurements.
  • Atomic Force Microscope measurements
  • Field Emission Scanning Electron Microscope measurements
  • X-Ray Diffraction measurements
  • Variable angle spectroscopic ellipsometry measurements
  • Four Probe Hall measurements
  • Annealing Furnace system
  • X-ray Photoelectron Spectroscopy and Ultraviolet Photoelectron Spectroscopy measurements
  • Solar Simulator and Quantum efficiency measurement system
  • Synthesis and characterization of PbS nanoparticles.
  • Spin coating technique.
  • Preparation of nanocomposite organic thin films for solar cell devices and metal films (Au, Ag, Al etc.)for contacts using thermal evaporation system.
  • TOF mobility measurement and its analysis were performed.
  • Photoluminescence and fluorescence life time measurement of organic thin films.
  • Linear absorption measurement of organic films and solution using Shimadzu 3100 spectrophotometer.
  • Analyzing and recording current – voltage characteristics of fabricated organic Nanocomposite Photovoltaic Cell films using Keithley 2612 system source meter units.
  • Measuring surface roughness and thickness of organic films using Alpha Step-IQ surface profilometer.
  • Performing experiments using Q - switched Nd. YAG of multiple wavelength laser system.

Workshops / STTPs / FDPs / Training Programs

  • Member, Organizing Committee, "1st Winter Workshop On Engineering at Nanoscale : From Materials to Bio-sensors", IIT Indore, 10-12th December, 2012
  • Participated in the National Laser Symposium (NLS-19) held at RRCAT, Indore in Dec-2010
  • Participated in INUP Familiarization Workshop at NIT, Hamirpur  (27-28 March 2015)
  • Participated in at Synchrotron Radiation March 24–28, 2014 RRCAT, Indore

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