Inactive (PbI <sub>2</sub> ) <sub>2</sub> RbCl stabilizes perovskite films for efficient solar cells-Reference-Cited by-同舟云学术

Inactive (PbI ₂ ) ₂ RbCl stabilizes perovskite films for efficient solar cells

Published:2022-07-29 Issue:6605 Volume:377 Page:531-534
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Zhao Yang¹²^ORCID,Ma Fei¹²,Qu Zihan¹²,Yu Shiqi¹²,Shen Tao²³^ORCID,Deng Hui-Xiong²³^ORCID,Chu Xinbo¹²,Peng Xinxin⁴^ORCID,Yuan Yongbo⁴⁵^ORCID,Zhang Xingwang¹²^ORCID,You Jingbi¹²^ORCID

Affiliation:

1. Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, P.R. China, 100083.

2. Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, P.R. China, 100049.

3. State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, P.R. China, 100083.

4. Hunan Key Laboratory of Super Microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha, Hunan, P.R. China, 410083.

5. Hunan Key Laboratory of Nanophotonics and Devices, School of Physics and Electronics, Central South University, Changsha, Hunan, P.R. China, 410083.

Abstract

In halide perovskite solar cells the formation of secondary-phase excess lead iodide (PbI 2 ) has some positive effects on power conversion efficiency (PCE) but can be detrimental to device stability and lead to large hysteresis effects in voltage sweeps. We converted PbI 2 into an inactive (PbI 2 ) 2 RbCl compound by RbCl doping, which effectively stabilizes the perovskite phase. We obtained a certified PCE of 25.6% for FAPbI 3 (FA, formamidinium) perovskite solar cells on the basis of this strategy. Devices retained 96% of their original PCE values after 1000 hours of shelf storage and 80% after 500 hours of thermal stability testing at 85°C.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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