Author(s): Zhao, Y (Zhao, Yang); Ma, F (Ma, Fei); Qu, ZH (Qu, Zihan); Yu, SQ (Yu, Shiqi); Shen, T (Shen, Tao); Deng, HX (Deng, Hui-Xiong); Chu, XB (Chu, Xinbo); Peng, XX (Peng, Xinxin); Yuan, YB (Yuan, Yongbo); Zhang, XW (Zhang, Xingwang); You, JB (You, Jingbi)

Source: SCIENCE Volume: 377 Issue: 6605 Pages: 531-534 DOI: 10.1126/science.abp8873 Published: JUL 29 2022

Abstract: In halide perovskite solar cells the formation of secondary-phase excess lead iodide (PbI2) 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 PbI2 into an inactive ( PbI2)(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 degrees C.

Accession Number: WOS:000836647500041

PubMed ID: 35901131

Author Identifiers:

Author        Web of Science ResearcherID        ORCID Number

Yuan, Yongbo         Y-2461-2019         0000-0002-4606-4611

ISSN: 0036-8075

eISSN: 1095-9203

Full Text: https://www.science.org/doi/10.1126/science.abp8873