Skip to main content
Transparent Ohmic Contacts for Solution-Processed, Ultrathin CdTe Solar Cells
ACS Energy Letters
  • J. Matthew Kurley, University of Chicago
  • Matthew G. Panthani, Iowa State University
  • Ryan W. Crisp, Colorado School of Mines and National Renewable Energy Laboratory
  • Sanjini U. Nanayakkara, National Renewable Energy Laboratory
  • Gregory F. Pach, National Renewable Energy Laboratory
  • Matthew O. Reese, National Renewable Energy Laboratory
  • Margaret H. Hudson, University of Chicago
  • Dmitriy S. Dolzhnikov, University of Chicago
  • Vadim Tanygin, University of Chicago
  • Joseph M. Luther, National Renewable Energy Laboratory
  • Dmitri V. Talapin, University of Chicago and Argonne National Laboratory
Document Type
Publication Version
Accepted Manuscript
Publication Date

Recently, solution-processing became a viable route for depositing CdTe for use in photovoltaics. Ultrathin (∼500 nm) solar cells have been made using colloidal CdTe nanocrystals with efficiencies exceeding 12% power conversion efficiency (PCE) demonstrated by using very simple device stacks. Further progress requires an effective method for extracting charge carriers generated during light harvesting. Here, we explored solution-based methods for creating transparent Ohmic contacts to the solution-deposited CdTe absorber layer and demonstrated molecular and nanocrystal approaches to Ohmic hole-extracting contacts at the ITO/CdTe interface. We used scanning Kelvin probe microscopy to further show how the above approaches improved carrier collection by reducing the potential drop under reverse bias across the ITO/CdTe interface. Other methods, such as spin-coating CdTe/A2CdTe2 (A = Na, K, Cs, N2H5), can be used in conjunction with current/light soaking to improve PCE further.


This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Energy Letters, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see DOI: 10.1021/acsenergylett.6b00587. Posted with permission.

Copyright Owner
American Chemical Society
File Format
Citation Information
J. Matthew Kurley, Matthew G. Panthani, Ryan W. Crisp, Sanjini U. Nanayakkara, et al.. "Transparent Ohmic Contacts for Solution-Processed, Ultrathin CdTe Solar Cells" ACS Energy Letters Vol. 2 Iss. 1 (2017) p. 270 - 278
Available at: