Two-dimensional Ruddlesden–Popper layered perovskite solar cells based on phase-pure thin films

Two-dimensional Ruddlesden–Popper layered metal-halide perovskites have attracted increasing attention for their desirable optoelectronic properties and improved stability compared to their three-dimensional counterparts. However, such perovskites typically consist of multiple quantum wells with a r...

Full description

Saved in:
Bibliographic Details
Published in:Nature energy 2021-01, Vol.6 (1), p.38-45
Main Authors: Liang, Chao, Gu, Hao, Xia, Yingdong, Wang, Zhuo, Liu, Xiaotao, Xia, Junmin, Zuo, Shouwei, Hu, Yue, Gao, Xingyu, Hui, Wei, Chao, Lingfeng, Niu, Tingting, Fang, Min, Lu, Hui, Dong, Han, Yu, Hui, Chen, Shi, Ran, Xueqin, Song, Lin, Li, Bixin, Zhang, Jing, Peng, Yong, Shao, Guosheng, Wang, Jianpu, Chen, Yonghua, Xing, Guichuan, Huang, Wei
Format: Article
Language:English
Subjects:
639/301/299/946
639/4077/4072/4062
639/4077/909/4101
Acetic acid
Dimensional stability
Economics and Management
Energy
Energy conversion efficiency
Energy Policy
Energy Storage
Energy Systems
Iodides
Metal halides
Molten salts
Optoelectronics
Perovskites
Photovoltaic cells
Quantum wells
Renewable and Green Energy
Solar cells
Thin films
Wells
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Two-dimensional Ruddlesden–Popper layered metal-halide perovskites have attracted increasing attention for their desirable optoelectronic properties and improved stability compared to their three-dimensional counterparts. However, such perovskites typically consist of multiple quantum wells with a random well width distribution. Here, we report phase-pure quantum wells with a single well width by introducing molten salt spacer n -butylamine acetate, instead of the traditional halide spacer n -butylamine iodide. Due to the strong ionic coordination between n -butylamine acetate and the perovskite framework, a gel of a uniformly distributed intermediate phase can be formed. This allows phase-pure quantum well films with microscale vertically aligned grains to crystallize from their respective intermediate phases. The resultant solar cells achieve a power conversion efficiency of 16.25% and a high open voltage of 1.31 V. After keeping them in 65 ± 10% humidity for 4,680 h, under operation at 85 °C for 558 h, or continuous light illumination for 1,100 h, the cells show
ISSN:2058-7546
2058-7546
DOI:10.1038/s41560-020-00721-5