Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China.
Department of Physics and Astronomy and Wright Center for Photovoltaic Innovation and Commercialization, The University of Toledo, Toledo, OH, 43607, USA.
Adv Mater. 2019 Nov;31(47):e1803792. doi: 10.1002/adma.201803792. Epub 2019 Jan 24.
Despite the exciting progress on power conversion efficiencies, the commercialization of the emerging lead (Pb) halide perovskite solar cell technology still faces significant challenges, one of which is the inclusion of toxic Pb. Searching for Pb-free perovskite solar cell absorbers is currently an attractive research direction. The approaches used for and the consequences of Pb replacement are reviewed herein. Reviews on the theoretical understanding of the electronic, optical, and defect properties of Pb and Pb-free halide perovskites and perovskite derivatives are provided, as well as the experimental results available in the literature. The theoretical understanding explains well why Pb halide perovskites exhibit superior photovoltaic properties, but Pb-free perovskites and perovskite derivatives do not.
尽管在功率转换效率方面取得了令人兴奋的进展，但新兴的铅（Pb）卤化物钙钛矿太阳能电池技术的商业化仍然面临着重大挑战，其中之一是包含有毒的 Pb。寻找无铅钙钛矿太阳能电池吸收剂是目前一个有吸引力的研究方向。本文综述了 Pb 替代的方法和后果。提供了对 Pb 和无铅卤化物钙钛矿和钙钛矿衍生物的电子、光学和缺陷性质的理论理解的综述，以及文献中可用的实验结果。理论理解很好地解释了为什么 Pb 卤化物钙钛矿表现出优异的光伏性能，而无铅钙钛矿和钙钛矿衍生物则没有。
