High Efficiency Thin Upgraded Metallurgical-Grade Silicon Solar Cells on Flexible Substrates
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- 作者：Jae Young Kwon ; Duck Hyun Lee ; Michelle Chitambar ; Stephen Maldonado ; Anish Tuteja ; Akram Boukai
- 刊名：Nano Letters
- 出版年：2012
- 出版时间：October 10, 2012
- 年：2012
- 卷：12
- 期：10
- 页码：5143-5147
- 全文大小：366K
- 年卷期：v.12,no.10(October 10, 2012)
- ISSN：1530-6992
文摘
We present a thin film (<20 渭m) solar cell based on upgraded metallurgical-grade polycrystalline Si that utilizes silver nanoparticles atop silicon nanopillars created by block copolymer nanolithography to enhance light absorption and increase cell efficiency 畏 > 8%. In addition, the solar cells are flexible and semitransparent so as to reduce balance of systems costs and open new applications for conformable solar cell arrays on a variety of surfaces. Detailed studies on the optical and electrical properties of the resulting solar cells suggest that both antireflective and light-trapping mechanisms are key to the enhanced efficiency.