A novel Lead-free material Cs2PtI6 with Narrow Bandgap and Ultra-Stable for Its Photovoltaic Application
Shuzhang Yang a, Liang Wang a, Tingli Ma a b
a Kyushu institute of Technology, Jersey
b China Jiliang University, Hangzhou, P. R. China, Hangzhou, China
nanoGe Perovskite Conferences
Proceedings of International online conference on Hybrid materials and optoelectronic devices (HYBRIDOE)
Online, Spain, 2020 December 15th - 17th
Organizers: Xueqing Xu, Baomin Xu, Hin-Lap (Angus) Yip and Xinhua Zhong
Poster, Shuzhang Yang, 042
Publication date: 4th December 2020


     A new lead-free double perovskite Cs2PtI6 is first applied into solar cell. This material exhibits a wide wavelength absorption spectrum as well as a high absorption coefficient. By optimization, the device displays the best power conversion efficiency of 0.73% with an amazing fill factor of 0.82. Importantly, it also demonstrates excellent stability when exposed to extreme conditions such as high humidity, high temperature and UV-light irradiation. It can retain almost 80% of the original efficiency over 60 days stored in ambient temperature without any encapsulation. This ecofriendly material shows a huge potential which boosting prospects for applications of lead-free perovskite solar cells.



Shuzhang Yang gratefully acknowledges fellowships from the China Scholarship Council (CSC) (No. 201806060130). This work was supported by the (KAKENHI) program, Japan (B, Grant Number 19H02818) and the National Natural Science Foundation of China (Grant No. 51972293, 51772039) funded this work.


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