The formation of ZnTe:Cu and CuxTe double layer back contacts for CdTe solar cells

Sun Ho Kim, Jin Hyung Ahn, Hyung Seok Kim, Heon Min Lee, Dong Hwan Kim

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

Processes to form a CuxTe layer on a ZnTe:Cu layer were investigated by various deposition methods and heat treatment. These were to make ZnTe:Cu/CuxTe double layer contacts for CdTe solar cells and to have benefit from both the well-matched interfacial property of ZnTe:Cu and low-resistivity CuxTe. The method to form CuxTe compounds was annealing the bi-layer of copper and tellurium which were deposited by sputtering. At an adequate annealing condition, CuxTe alloy was formed while maintaining underlying ZnTe without intermixing. CuxTe was also formed using co-deposition method. However, in terms of crystallinity, the bi-layer deposition method was considered to be better. According to this experiments, ZnTe:Cu/CuxTe double layer contact was successfully formed. This double layer contact is expected to be a good candidate for high efficiency CdTe solar cell.

Original languageEnglish
Pages (from-to)S484-S487
JournalCurrent Applied Physics
Volume10
Issue numberSUPPL. 3
DOIs
Publication statusPublished - 2010

Keywords

  • Back contacts
  • CdTe solar cell
  • CuTe
  • ZnTe

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)

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