Abstract

Inorganic halide perovskites such as cesium lead halide are promising due to their excellent thermal stability. Cesium lead iodide (CsPbI3) has a bandgap of 1.73 eV and is very suitable for making efficient tandem solar cells, either with low-bandgap perovskite or silicon. However, the phase instability of CsPbI3 is hindering the further optimization of device performance. Here, we show that high quality and stable α-phase CsPbI3 film is obtained via solvent-controlled growth of the precursor film in a dry environment. A 15.7% power conversion efficiency of CsPbI3 solar cells is achieved, which is the highest efficiency reported for inorganic perovskite solar cells up to now. And more importantly, the devices can tolerate continuous light soaking for more than 500 h without efficiency drop.

Details

Title
Solvent-controlled growth of inorganic perovskite films in dry environment for efficient and stable solar cells
Author
Wang, Pengyang 1 ; Zhang, Xingwang 1 ; Zhou, Yuqin 2 ; Jiang, Qi 1 ; Ye, Qiufeng 1 ; Chu, Zema 3 ; Li, Xingxing 1 ; Yang, Xiaolei 3 ; Yin, Zhigang 1 ; You, Jingbi 1   VIAFID ORCID Logo 

1  Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, China; College of Materials Science and Opto-electronic Technology, University of Chinese Academy of Sciences, Beijing, China 
2  College of Materials Science and Opto-electronic Technology, University of Chinese Academy of Sciences, Beijing, China 
3  Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, China 
Pages
1-7
Publication year
2018
Publication date
Jun 2018
Publisher
Nature Publishing Group
e-ISSN
20411723
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1038/s41467-018-04636-4
ProQuest document ID
2052589355
Copyright
© 2018. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.