title: Post-growth process for flexible CdS/CdTe thin film solar cells with high specific power.
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.
authors.forename: Eunwoo
authors.initials: E
authors.lastname: Cho
authors.forename: Yoonmook
authors.initials: Y
authors.lastname: Kang
authors.forename: Donghwan
authors.initials: D
authors.lastname: Kim
authors.forename: Jihyun
authors.initials: J
authors.lastname: Kim