Photoluminescence of sulfur-incorporated CIGS solar cells through post-annealing

Yoonsung Nam, Jengsu Yoo, Soo Kyung Chang, Jae Hyung Wi, Woo Jung Lee, Dae Hyung Cho, Yong Duck Chung

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


The photoluminescence (PL) of Cu(In,Ga)Se2 solar cell with sputtered Zn(O,S) buffer layers annealed at various temperatures were measured. As the annealing temperature increased, the peak positions of PL spectra shifted to higher energies. The broad PL spectra were separated two or three emissions, which are suggested to be mostly to donor-acceptor pair transitions with an acceptor due to copper vacancy and donors due to selenium vacancy or IIICu antisite. The changes of PL spectra were discussed from the view of the diffusion of elements, especially sulfur from buffer to absorber during the post-annealing process.

Original languageEnglish
Pages (from-to)595-599
Number of pages5
JournalJournal of Luminescence
Publication statusPublished - 2017 Aug

Bibliographical note

Funding Information:
This work was supported by the ‘‘New & Renewable Energy’’ project in the form of a grant from the Korea Institute of Energy Technology Evaluation and Planning (KETEP) funded by the Korean Ministry Of Trade, Industry & Energy (20153010011990).

Publisher Copyright:
© 2017 Elsevier B.V.

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Biochemistry
  • Chemistry(all)
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics


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