Co-Sublimated Polycrystalline Cd1-xZnx Te Films for Multi-junction Solar Cells

Tushar Shimpi, Drew Swanson, Carey Reich, Jason Kephart, Anna Kindvall, Ramesh Pandey, Zachary Holman, Kurt Barth, Walajabad Sampath

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

There are two major hurdles in the fabrication of top cell using polycrystalline films of CdTe alloys. First, the deposition of the films is difficult due to the difference in the vapor pressure of the individual elements present in the alloy or longer process time making it not economical. The retention of the original stoichiometry of the CdTe alloy after the CdCl2 treatment is the second hurdle. In this work, polycrystalline films of Cd(1-x)ZnxTe (Cd-Zn-Te) were fabricated with different band gaps by co-sublimation of CdTe and Zn. A strategy to retain the composition of the polycrystalline Cd-Zn-Te films is investigated and demonstrated. Quantum efficiency of greater than 0.7 was observed in the fabricated devices and band gap was maintained.

Original languageEnglish (US)
Title of host publication2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2638-2641
Number of pages4
ISBN (Electronic)9781538685297
DOIs
StatePublished - Nov 26 2018
Event7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - Waikoloa Village, United States
Duration: Jun 10 2018Jun 15 2018

Other

Other7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018
CountryUnited States
CityWaikoloa Village
Period6/10/186/15/18

Keywords

  • CdZnTe
  • high band gap CdTe alloy
  • tandem
  • top cell

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

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    Shimpi, T., Swanson, D., Reich, C., Kephart, J., Kindvall, A., Pandey, R., Holman, Z., Barth, K., & Sampath, W. (2018). Co-Sublimated Polycrystalline Cd1-xZnx Te Films for Multi-junction Solar Cells. In 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC (pp. 2638-2641). [8547657] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PVSC.2018.8547657