Properties of Oxygenated Cadmium Sulfide (CdS:O) and Their Impact on CdTe Device Performance

D. M. Meysing, M. M. Griffith, W. L. Rance, M. O. Reese, J. M. Burst, C. A. Wolden, T. M. Barnes

Research output: Contribution to conferencePaperpeer-review

13 Scopus Citations


In this work, we report on the development of a reactive sputtering process for CdS:O for high efficiency CdTe solar cells. X-ray diffraction, UV-Vis-NIR spectrophotometry, and Rutherford backscattering spectrometry were used to characterize the crystal structure, composition, and optical properties, respectively. All films were slightly Cd-rich, while the bulk oxygen content increased up to 45 at. % in direct proportion to the O2 partial pressure. Optical absorption in cells was reduced by increasing the oxygen fraction in the sputtering ambient. Optimal performance was obtained from cells with CdS sputtered in a 6% O2/Ar ambient, yielding efficiency >14% and VOC >840 mV.

Original languageAmerican English
Number of pages4
StatePublished - 15 Oct 2014
Event40th IEEE Photovoltaic Specialist Conference, PVSC 2014 - Denver, United States
Duration: 8 Jun 201413 Jun 2014


Conference40th IEEE Photovoltaic Specialist Conference, PVSC 2014
Country/TerritoryUnited States

Bibliographical note

Publisher Copyright:
© 2014 IEEE.

NREL Publication Number

  • NREL/CP-5K00-63726


  • cadmium sulfide
  • cadmium telluride
  • optical band gap
  • sputtering
  • thin-film photovoltaic cells


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