Bill Shafarman

William N. Shafarman

Director: Institute of Energy Conversion

Professor: Materials Science and Engineering


Phone: 302-831-6215

Education: Ph.D. (Physics) – University of Rochester

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Dr. William N. Shafarman’s research group investigates materials, processing, and characterization of compound semiconductors for their application in thin film solar cells and related optoelectronic applications. This research is focused primarily on chalcogenide and perovskite materials and alloys deposited using a wide range of processes and in the fabrication of complete solar cell devices. The main objective of this research is to explore the complex relationships between processing, materials properties, device design, and electronic characteristics of the solar cells.

Research Interests

  • Doping, alloying, bandgap engineering of thin film chalcogenide materials
  • New compound materials for photovoltaics and related optoelectronic applications
  • Design and validation of new device structures and contacts
  • Development of thin film deposition processes to facilitate manufacturing scale-up

Featured Publications

  1. “The Growth of Methylammonium Lead Iodide Perovskites by Close Space Vapor Transport” Alexander J. Harding, Austin G. Kuba, Brian E. McCandless, Ujjwal K. Das, Kevin D. Dobson, Babatunde A. Ogunnaike, William N. Shafarman, RSC Advances 10, 16125 (2020).  doi: 10.1039/D0RA01640C
  2. Nicholas Valdes, JinWoo Lee, William Shafarman, “Ag Alloying and KF Treatment Effects on Low Bandgap CuInSe2 Solar Cells,” IEEE Journal of Photovoltaics 9, 906 (2019).
  3. J. K. Larsen, H. Simchi, P. Xin, K. Kim,  and W. N. Shafarman, “Backwall superstrate configuration for ultrathin Cu(In,Ga)Se2 solar cells,” Applied Physics Letters 104, 033901 (2014).
  4. W.N. Shafarman, S. Siebentritt, and L. Stolt, “Cu(InGa)Se2 Solar Cells,” Chapter 13 in Handbook of Photovoltaic Science and Engineering, Second Edition, ed. by A. Luque and S. Hegedus, John Wiley & Sons, Ltd., 546 (2011).
  5. S.S. Hegedus and W.N. Shafarman, “Thin Film Solar Cells: Device Measurements and Analysis," Progress in Photovoltaics: Res. Appl. 12, 155 (2004).

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