Thin-Film Solar Cells with 19% Efficiency by Thermal Evaporation of CdSe and CdTe

Tursun Ablekim, Joel N. Duenow, Xin Zheng, Helio Moutinho, John Moseley, Craig L. Perkins, Steven W. Johnston, Patrick O'Keefe, Eric Colegrove, David S. Albin, Matthew O. Reese, Wyatt K. Metzger

Research output: Contribution to journalArticlepeer-review

110 Scopus Citations


CdTe-based solar cells exhibiting 19% power conversion efficiency were produced using widely available thermal evaporation deposition of the absorber layers on SnO2-coated glass with or without a transparent MgZnO buffer layer. Evaporating CdSe and CdTe sequentially by thermal evaporation and subsequent CdCl2 annealing establishes efffective CdSeTe band grading as well as dense, large-grain films. These results show that high-performance II-VI photovoltaics can be made by inexpensive, commercially available evaporation systems without the need to build customized equipment, enabling CdTe photovoltaics research and manufacturing to be more accessible to the broader photovoltaics community.

Original languageAmerican English
Pages (from-to)892-896
Number of pages5
JournalACS Energy Letters
Issue number3
StatePublished - 2020

Bibliographical note

Publisher Copyright:
Copyright © 2020 American Chemical Society.

NREL Publication Number

  • NREL/JA-5K00-75734


  • absorption
  • cadmium selenide
  • CdTe photovoltaics
  • deposition
  • layers
  • power conversion
  • solar cells


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