CsPbI2.69Br0.31 solar cells from low-temperature fabrication

Shizhe Wang; Yong Hua; Mingkui Wang; Fangyang Liu; Liming Ding

doi:10.1039/C9QM00168A

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CsPbI_2.69Br_0.31 solar cells from low-temperature fabrication†

Shizhe Wang,^ab Yong Hua,

*^c Mingkui Wang,

*^d Fangyang Liu

*^e and Liming Ding

*^ab

Author affiliations

* Corresponding authors

^a Center for Excellence in Nanoscience (CAS), Key Laboratory of Nanosystem and Hierarchical Fabrication (CAS), National Center for Nanoscience and Technology, Beijing 100190, China
E-mail: ding@nanoctr.cn

^b University of Chinese Academy of Sciences, Beijing 100049, China

^c Yunnan Key Laboratory for Micro/Nano Materials & Technology, School of Materials Science and Engineering, Yunnan University, Kunming 650091, China
E-mail: huayong@ynu.edu.cn

^d Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
E-mail: mingkui.wang@mail.hust.edu.cn

^e School of Metallurgy and Environment, Central South University, Changsha 410083, China
E-mail: liufangyang@csu.edu.cn

Abstract

A low-temperature one-step solution process for the preparation of cesium lead iodide perovskite solar cells (PSCs) was developed by adding hydrobromic acid (HBr) into the precursor solution. CsPbI_2.69Br_0.31 was confirmed as the best structure, with a bandgap of 1.75 eV. A 9.58% power conversion efficiency (PCE) was achieved, which is the highest for PEDOT:PSS-based inorganic perovskite solar cells. The device efficiency decreased by 4% after being stored in N₂ for 1200 hours.

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Article information

DOI: https://doi.org/10.1039/C9QM00168A
Article type: Research Article
Submitted: 20 Mar 2019
Accepted: 08 Apr 2019
First published: 13 Apr 2019

Download Citation

Mater. Chem. Front., 2019,3, 1139-1142

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CsPbI_2.69Br_0.31 solar cells from low-temperature fabrication

S. Wang, Y. Hua, M. Wang, F. Liu and L. Ding, Mater. Chem. Front., 2019, 3, 1139 DOI: 10.1039/C9QM00168A

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