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Electronics and Telecommunications Research Institute (한국전자통신연구원)
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Flower like Buffer Layer to Improve Efficiency of Submicron-Thick CuIn1-xGaxSe2 Solar Cells

  • Park, Nae-Man (Information & Communications Core Technology Research Laboratory, ETRI, Department of Advanced Device Technology) ;
  • Cho, Dae-Hyung (Information & Communications Core Technology Research Laboratory, ETRI) ;
  • Lee, Kyu-Seok (Technology Commercialization Division, ETRI)
  • Received : 2015.02.05
  • Accepted : 2015.07.28
  • Published : 2015.12.01
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Abstract

In this article, a study of a flower like nanostructured CdS buffer layer for improving the performance of a submicron-thick $CuIn_{1-x}Ga_xSe_2$ (CIGS) solar cell (SC) is presented. Both its synthesis and properties are discussed in detail. The surface reflectance of the device is dramatically decreased. SCs with flower like nanostructured CdS buffer layers enhance short-circuit current density, fill factor, and open-circuit voltage. These enhancements contribute to an increase in power conversion efficiency of about 55% on average compared to SCs that don't have a flower like nanostructured CdS buffer layer, despite them both having the same CIGS light absorbing layer.

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References

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