期刊
ACS NANO
卷 9, 期 10, 页码 10287-10295出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.5b04284
关键词
perovskite solar cell; flexible glass; antireflection layer; superhydrophobicity; thermal evaporation
类别
资金
- Hong Kong Research Grant Council [612113]
- Hong Kong Innovation and Technology Fund from the Innovation and Technology Commission, State Key Laboratory on Advanced Displays and Optoelectronics at HKUST [ITS/117/13, ITS/362/14FP]
- Shenzhen Technology Innovation Commission [JCYJ20130402164725025, GJHZ20130417170946221, JCYJ20140721163526514]
- TcSUH
Flexible thin film solar cells have attracted a great deal of attention as mobile power sources and key components for building-integrated photovoltaics, due to their light weight and flexible features in addition to compatibility with low-cost roll-to-roll fabrication processes. Among many thin film materials, organometallic perovskite materials are emerging as highly promising candidates for high efficiency thin film photovoltaics; however, the performance, scalability, and reliability of the flexible perovskite solar cells still have large room to improve. Herein, we report highly efficient, flexible perovskite solar cells fabricated on ultrathin flexible glasses. In such a device structure, the flexible glass substrate is highly transparent and robust, with low thermal expansion coefficient, and perovskite thin film was deposited with a thermal evaporation method that showed large-scale uniformity. In addition, a nanocone array antireflection film was attached to the front side of the glass substrate in order to improve the optical transmittance and to achieve a water-repelling effect at the same time. It was found that the fabricated solar cells have reasonable bendability, with 96% of the initial value remaining after 200 bending cycles, and the power conversion efficiency was improved from 12.06 to 13.14% by using the antireflection film, which also demonstrated excellent superhydrophobicity.
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