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arXiv · 1703.02401

Organic-inorganic Copper(II)-based Material: a Low-Toxic, Highly Stable Light Absorber beyond Organolead Perovskites

Xiaolei Li·Xiangli Zhong·Yue Hu·Bochao Li·Yusong Sheng·Yang Zhang·Chao Weng·Ming Feng·Hongwei Han·Jinbin Wang
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Abstract

Lead halide perovskite solar cells have recently emerged as a very promising photovoltaic technology due to their excellent power conversion efficiencies; however, the toxicity of lead and the poor stability of perovskite materials remain two main challenges that need to be addressed. Here, for the first time, we report a lead-free, highly stable C6H4NH2CuBr2I compound. The C6H4NH2CuBr2I films exhibit extraordinary hydrophobic behavior with a contact angle of approximately 90 degree, and their X-ray diffraction patterns remain unchanged even after four hours of water immersion. UV-Vis absorption spectrum shows that C6H4NH2CuBr2I compound has an excellent optical absorption over the entire visible spectrum. We applied this copper-based light absorber in printable mesoscopic solar cell for the initial trial and achieved a power conversion efficiency of 0.5%. Our study represents an alternative pathway to develop low-toxic and highly stable organic-inorganic hybrid materials for photovoltaic application.

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Xiaolei Li, Xiangli Zhong, Yue Hu, Bochao Li, Yusong Sheng, Yang Zhang, Chao Weng, Ming Feng, Hongwei Han, Jinbin Wang. 2017-03-09. Organic-inorganic Copper(II)-based Material: a Low-Toxic, Highly Stable Light Absorber beyond Organolead Perovskites. https://arxiv.org/abs/1703.02401

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