Lead Sulfide Nanocrystal Quantum Dot Solar Cells with Trenched ZnO Fabricated via Nanoimprinting
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- 作者：Sarah Kim ; Jun Kwan Kim ; Jianbo Gao ; Jung Hoon Song ; Hey Jin An ; Tae-Soo You ; Tae-Soo Lee ; Jong-Ryul Jeong ; Eung-Sug Lee ; Jun-Ho Jeong ; Matthew C. Beard ; Sohee Jeong
- 刊名：ACS Applied Materials & Interfaces
- 出版年：2013
- 出版时间：May 8, 2013
- 年：2013
- 卷：5
- 期：9
- 页码：3803-3808
- 全文大小：393K
- 年卷期：v.5,no.9(May 8, 2013)
- ISSN：1944-8252
文摘
The improvement of power conversion efficiency, especially current density (Jsc), for nanocrystal quantum dot based heterojunction solar cells was realized by employing a trenched ZnO film fabricated using nanoimprint techniques. For an optimization of ZnO patterns, various patterned ZnO films were investigated using electrical and optical analysis methods by varying the line width, interpattern distance, pattern height, and residual layer. Analyzing the features of patterned ZnO films allowed us to simultaneously optimize both the pronounced electrical effects as well as optical properties. Consequently, we achieved an enhancement in Jsc from 7.82 to 12.5 mA cm鈥? by adopting the patterned ZnO with optimized trenched shape.