Convenient preparation of CsSnI3 quantum dots, excellent stability, and the highest performance of lead-free inorganic perovskite solar cells so far

Yangyang Wang; Jin Tu; Tianhao Li; Cheng Tao; Xianyu Deng; Zhen Li

doi:10.1039/C8TA10901J

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Convenient preparation of CsSnI₃ quantum dots, excellent stability, and the highest performance of lead-free inorganic perovskite solar cells so far†

Yangyang Wang,^a Jin Tu,^b Tianhao Li,^a Cheng Tao,^a Xianyu Deng

*^a and Zhen Li

*^bc

Author affiliations

* Corresponding authors

^a Shenzhen Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen, China
E-mail: xydeng@hit.edu.cn

^b Department of Chemistry, Wuhan University, Wuhan 430072, China
E-mail: lizhen@whu.edu.cn

^c Institute of Molecular Aggregation Science, Tianjin University, Tianjin 30072, China

Abstract

Perovskite quantum dots (PVQDs) have been demonstrated to be favorable materials for opto-electronic devices regardless of the generally required complicated preparation processes including solvent exchanges. Here, we report a novel convenient and efficient approach to produce CsSnI₃ PVQDs through one-pot synthesis. Specifically, the produced PVQD solutions were clear and stable at room temperature after 90 days due to the antioxidant solvent additive (ASA) triphenyl phosphite (TPPi). Interestingly, the corresponding CsSnI₃ PVQD-based solar cells achieved the maximum power conversion efficiency (PCE) of 5.03%, which is the highest performance for all-inorganic lead-free perovskite solar cells reported so far.

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Article information

DOI: https://doi.org/10.1039/C8TA10901J
Article type: Paper
Submitted: 13 Nov 2018
Accepted: 17 Feb 2019
First published: 18 Feb 2019

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J. Mater. Chem. A, 2019,7, 7683-7690

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Convenient preparation of CsSnI₃ quantum dots, excellent stability, and the highest performance of lead-free inorganic perovskite solar cells so far

Y. Wang, J. Tu, T. Li, C. Tao, X. Deng and Z. Li, J. Mater. Chem. A, 2019, 7, 7683 DOI: 10.1039/C8TA10901J

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Journal of Materials Chemistry A