Post-growth process for flexible CdS/CdTe thin film solar cells with high specific power

Eunwoo Cho, Yoon Mook Kang, Donghwan Kim, Ji Hyun Kim

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We demonstrated a flexible CdS/CdTe thin film solar cell with high specific power of approximately 254 W/kg. A flexible and ultra-light weight CdS/CdTe cell treated with pre-NP etch process exhibited high conversion efficiency of 13.56% in superstrate configuration. Morphological, structural and optical changes of CdS/CdTe thin films were characterized when pre-NP etch step was incorporated to the conventional post-deposition process. Improvement of photovoltaic parameters can be attributed to the removal of the oxide and the formation of Te-rich layer, which benefit the activation process. Pre-NP etched cell maintained their flexibility and performance under the repeated tensile strain of 0.13%. Our method can pave a way for manufacturing flexible CdS/CdTe thin film solar cells with high specific power for mobile and aerospace applications.

Original languageEnglish
Pages (from-to)A791-A796
JournalOptics Express
Volume24
Issue number10
DOIs
Publication statusPublished - 2016 May 16

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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