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Sushobhan Avasthi

Conference and Seminars

  • S. Avasthi, K. A. Nagamatsu, J. Jhaveri, W. E. McClain, G. Man, A. Kahn, J. Schwartz, S. Wagner, and J. C.Sturm, “Double-Heterojunction Crystalline Silicon Solar Cell Fabricated at 250 C with 12.9% Efficiency, presented at 40th IEEE Photovoltaic Specialists Conference, Denver CO, June 2014.
  • J. Jhaveri, S. Avasthi, K. A. Nagamatsu, and J. C.Sturm, “Stable Low- Recombination n-Si/TiO2 Hole-blocking Interface and Its Effect on Silicon Heterojunction Photovoltaics, presented at 40th IEEE Photovoltaic Specialists Conference, Denver CO, June 2014.
  • S. Avasthi, W. E. McClain, Y. Afsar, G. Man, J. Jhaveri, K. A. Nagamatsu, A. Kahn, J. Schwartz, S. Wagner, and J. C.Sturm, “Hole-Blocking Metal-Oxide/Crystalline-Silicon Heterojunctions with Recombination Velocity of smaller than 100 cm/s”, 2014 MRS Spring Meeting, San Francisco, CA, March 2014.
  • S. Avasthi, W. E. McClain, G. Man, J. Jhaveri, K. A. Nagamatsu, A. Kahn, J. Schwartz, and J. C.Sturm, “Growth Mechanism and Carrier Transport in Hole-Blocking TiO2/Silicon Heterojunctions_, 2014 MRS Spring Meeting, San Francisco, CA, March 2014.
  • J. Jhaveri, S. Avasthi, G. Man, K. A. Nagamatsu, W. E. McClain, J. Schwartz, A. Kahn, J. C. Sturm, “Effect of Annealing on Stability of Low Interface Recombination Velocity at TiO2/p-Silicon Interface”, 2014 MRS Spring Meeting, San Francisco, CA, March 2014.
  • K. A. Nagamatsu, J. A. Spechler, S. Avasthi, C. B. Arnold, J. C. Sturm, “Silicon/Organic Heterojunction Photovoltaic Cell with 12.7% Efficiency by Use of Spray-Coated Nanowire Transparent Conductor”, 2014 MRS Spring Meeting, San Francisco, CA, March 2014.
  • J. C. Sturm, S. Avasthi, K. A. Nagamatsu, J. Jhaveri, W. E. McClain, G. Man, A. Kahn, J. Schwartz, S. Wagner, “Wide Bandgap Heterojunctions on Crystalline Silicon”, ECS Trans., 58, 97-105 (2013).
  • J. Jhaveri, S. Avasthi, G. Man, W. E. McClain, K. Nagamatsu, A. Kahn, J. Schwartz, J. C. Sturm,”Hole-Blocking Crystalline-Silicon/Titanium-Oxide Heterojunction with Very Low Interface Recombination Velocity”, 39th IEEE Photovoltaic Specialists Conference, Tampa, FL, June 2013.
  • K. A. Nagamatsu, S. Avasthi, J. Jhaveri, J. C. Sturm, “12% Efficient Silicon/PEDOT:PSS Heterojunction Solar Cell Fabricated at smaller than 100 C”, 39th IEEE Photovoltaic Specialists Conference, Tampa, FL, June 2013.
  • J. Jhaveri, S. Avasthi, K. A. Nagamatsu, J. C. Sturm, “Wide Bandgap HBT on Crystalline Silicon using Electron-Blocking PEDOT:PSS Emitter”, 71st Device Research Conference, Notre Dame, IN, June 2013.
  • K. A. Nagamatsu, S. Avasthi, J. Spechler, C. B. Arnold, J. C. Sturm, “Current Mechanisms in Silicon-organic Heterojunction Solar Cells with Transfer Printed Metallization”, 2012 MRS Fall Meeting, Boston, MA, December 2012.
  • S. Avasthi, W. McClain, J. Schwartz, and J. C.Sturm, “Hole-blocking TiO2/Silicon Heterojunction for Silicon Photovoltaics”, 70th Device Research Conference, College Park, PA, June 2012.
  • S. Avasthi, and J. C. Sturm, “Charge Separation and Minority Carrier Injection in P3HT-Silicon Heterojunction solar cells”, 37th IEEE PVSC, Seattle, WA, June 2011.
  • S. Avasthi, S. Lee, Y. L. Loo, and J. C.Sturm, “The Role of P3HT Barriers in P3HT-Silicon Heterojunction Solar Cells with a High Open-Circuit Voltage”, 2011 MRS Spring Meeting, San Francisco, CA, March 2011.
  • S. Avasthi, Y. Qi, S. Ha, G. Vertelov, J. Schwartz, A. Kahn, and J. C.Sturm, “P3HT-Silicon Organic-Silicon Heterojunction for Photovoltaic Applications”, 2010 MRS Fall Meeting, Boston, MA, December 2010.
  • S. Avasthi, Y. Qi, G. Vertelov, J. Schwartz, A. Kahn, and J. C.Sturm, “Stability of Electrical Properties of Silicon (100) Surfaces Passivated with 9,10-phenanthrenequinone”, 2009 MRS Fall Meeting, Boston, MA, December 2009.
  • J. C. Sturm, B. Hekmatshoar, L. Han, S. Avasthi, G. Vertelov, Y. Qi, J. Schwartz, A. Kahn and S. Wagner, “Towards Organic-based Dielectrics for Low-Temperature Silicon -based Devices for Large-Area Electronics”, 2009 Materials Research Society Fall Meeting, Boston, MA, December 2009.
  • S. Avasthi, Y. Qi, J. Schwartz, A. Kahn, and J. C.Sturm, “Electronic Passivation of Silicon (100) Surfaces by Organic Layer of 9,10-phenanthrenequinone”, 51st Electronic Materials Conference, College Park, PA, June 2009.
  • S. Avasthi, G. Vertelov, J. Schwartz and J. C. Sturm, “Reduction of Minority Carrier Recombination at Silicon Surfaces and Contacts Using Organic Heterojunctions”, 34th IEEE PVSC, Philadelphia, PA, June 2009.

Publications

  • Tathagata Biswas, Pramod Ravindra, Eashwer Athresh, Rajeev Ranjan, Sushobhan Avasthi, Manish Jain, “Optical Properties of Zn2Mo3O8: Combination of Theoretical and Experimental Study”, The Journal of Physical Chemistry C, (2017).
  • Arun Singh Chouhan, Naga Prathibha Jasti, Shreyash Hadke, Srinivasan Raghavan, Sushobhan Avasthi, “Large grained and high charge carrier lifetime CH3NH3PbI3 thin-films: implications for perovskite solar cells”, Current Applied Physics, (2017).
  • Pramod Ravindra, Rudra Mukherjee, Sushobhan Avasthi, “Hole-Selective Electron-Blocking Copper Oxide Contact for Silicon Solar Cells”, IEEE Journal of Photovoltaics, (2017).
  • Saloni Chaurasia, Srinivasan Raghavan, Sushobhan Avasthi, “Epitaxial germanium thin films on silicon (100) using two-step process”, Emerging Electronics (ICEE), 2016 3rd International Conference, (2016).
  • Sushobhan Avasthi, Ken A Nagamatsu, Janam Jhaveri, William E McClain, Gabriel Man, Antoine Kahn, Jeffrey Schwartz, Sigurd Wagner, James C Sturm,” Double-heterojunction crystalline silicon solar cell fabricated at 250° C with 12.9% efficiency”, Photovoltaic Specialist Conference (PVSC), 2014 IEEE 40th, (2014).
  • Ken A Nagamatsu, Sushobhan Avasthi, Janam Jhaveri, James C Sturm, “A 12% efficient silicon/PEDOT: PSS heterojunction solar cell fabricated at< 100 C”, IEEE Journal of Photovoltaics, (2014).
  • James Sturm, Sushobhan Avasthi, Ken Nagamatsu, Janam Jhaveri, William E McClain, Gabriel Man, Antoine Kahn, Jeffrey Schwartz, Sigurd Wagner, “Wide Bandgap Heterojunctions on Crystalline Silicon”, ECS Transactions, (2013).  
  • Sushobhan Avasthi, William E McClain, Gabriel Man, Antoine Kahn, Jeffrey Schwartz, James C Sturm, “Hole-blocking titanium-oxide/silicon heterojunction and its application to photovoltaics”, Photovoltaic Specialists Conference (PVSC), 2013 IEEE 39th, (2013).
  • Sushobhan Avasthi, Stephanie Lee, Yueh‐Lin Loo, James C Sturm, “Role of majority and minority carrier barriers silicon/organic hybrid heterojunction solar cells”, Advanced materials, (2011).
  • Sushobhan Avasthi, Yabing Qi, Grigory K Vertelov, Jeffrey Schwartz, Antoine Kahn, James C Sturm, “Electronic structure and band alignment of 9, 10-phenanthrenequinone passivated silicon surfaces”, Surface Science, (2011).
  • Sushobhan Avasthi, Yabing Qi, Grigory K Vertelov, Jeffrey Schwartz, Antoine Kahn, James C Sturm, “Silicon surface passivation by an organic overlayer of 9, 10-phenanthrenequinone”, Applied physics letters, (2010).