Cho Eunwoo, Kang Yoonmook, Kim Donghwan, Kim Jihyun
Opt Express. 2016 May 16;24(10):A791-6. doi: 10.1364/OE.24.00A791.
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.
我们展示了一种具有约254 W/kg高比功率的柔性硫化镉/碲化镉薄膜太阳能电池。采用预NP蚀刻工艺处理的柔性超轻重量硫化镉/碲化镉电池在超strate配置下表现出13.56%的高转换效率。当将预NP蚀刻步骤纳入传统的沉积后工艺时，对硫化镉/碲化镉薄膜的形态、结构和光学变化进行了表征。光伏参数的改善可归因于氧化物的去除和富碲层的形成，这有利于激活过程。预NP蚀刻电池在0.13%的重复拉伸应变下保持其柔韧性和性能。我们的方法可为制造用于移动和航空航天应用的具有高比功率的柔性硫化镉/碲化镉薄膜太阳能电池铺平道路。
