Controllable Two-dimensional Perovskite Crystallization via Water Additive for High-performance Solar Cells

Ziji Liu; Hualin Zheng; Detao Liu; Zhiqing Liang; Wenyao Yang; Hao Chen; Long Ji; Shihao Yuan; Yiding Gu; Shibin Li

doi:10.1186/s11671-020-03338-5

Nanoscale Research Letters (May 2020)

Controllable Two-dimensional Perovskite Crystallization via Water Additive for High-performance Solar Cells

Ziji Liu,
Hualin Zheng,
Detao Liu,
Zhiqing Liang,
Wenyao Yang,
Hao Chen,
Long Ji,
Shihao Yuan,
Yiding Gu,
Shibin Li

Affiliations

Ziji Liu: State Key Laboratory of Electronic Thin Films and Integrated Devices, and School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC)
Hualin Zheng: State Key Laboratory of Electronic Thin Films and Integrated Devices, and School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC)
Detao Liu: State Key Laboratory of Electronic Thin Films and Integrated Devices, and School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC)
Zhiqing Liang: State Key Laboratory of Electronic Thin Films and Integrated Devices, and School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC)
Wenyao Yang: Chongqing Engineering Research Center of New Energy Storage Devices and Applications, Chongqing University of Arts and Sciences
Hao Chen: State Key Laboratory of Electronic Thin Films and Integrated Devices, and School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC)
Long Ji: State Key Laboratory of Electronic Thin Films and Integrated Devices, and School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC)
Shihao Yuan: State Key Laboratory of Electronic Thin Films and Integrated Devices, and School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC)
Yiding Gu: State Key Laboratory of Electronic Thin Films and Integrated Devices, and School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC)
Shibin Li: State Key Laboratory of Electronic Thin Films and Integrated Devices, and School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC)

DOI: https://doi.org/10.1186/s11671-020-03338-5
Journal volume & issue: Vol. 15, no. 1
pp. 1 – 8

Abstract

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Abstract Steering the crystallization of two-dimensional (2D) perovskite film is an important strategy to improve the power conversion efficiency (PCE) of 2D perovskite solar cells (PVSCs). In this paper, the deionized water (H2O) additive is introduced into the perovskite precursor solution to prepare high-quality 2D perovskite films. The 2D perovskite film treated with 3% H2O shows a good surface morphology, increased crystal size, enhanced crystallinity, preferred orientation, and low defect density. The fabricated 2D PVSC with 3% H2O exhibits a higher PCE compared with that without H2O (12.15% vs 2.29%). Furthermore, the shelf stability of unsealed devices with 3% H2O under ambient environment is significantly improved. This work provides a simple method to prepare high-quality 2D perovskite films for efficient and stable 2D PVSCs.

Published in Nanoscale Research Letters

ISSN: 1931-7573 (Print); 1556-276X (Online)
Publisher: SpringerOpen
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.springer.com/journal/11671

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