Efficient and Stable CIGS Solar Cells with ZnOS Buffer Layer

Rebekah Garris, Kannan Ramanathan, Lorelle Mansfield, Brian Egaas, Miguel Contreras, Ana Kanevce

Research output: Contribution to conferencePaperpeer-review

16 Scopus Citations


A chemical bath deposition (CBD) ZnOS process has been designed to yield repeatable and robust ZnOS/CIGS solar cells that do not require light soaking or annealing to reach conversion efficiency levels comparable with CdS/CIGS solar cells. In this study, copper content was varied over a wide range to understand its impact on these devices. Capacitance and temperature-dependent performance measurements were used to characterize the electrical performance as a function of Cu composition. The optimum Cu concentration was found to be about the same for both CBD CdS and CBD ZnOS junctions.

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-5K00-61228


  • chemical bath deposition
  • copper indium gallium diselenide
  • high efficiency
  • novel buffer
  • thin-film solar cells
  • zinc oxysulfide


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