通过添加水实现可控二维钙钛矿结晶用于高性能太阳能电池
Controllable Two-dimensional Perovskite Crystallization via Water Additive for High-performance Solar Cells.
作者信息
Liu Ziji, Zheng Hualin, Liu Detao, Liang Zhiqing, Yang Wenyao, Chen Hao, Ji Long, Yuan Shihao, Gu Yiding, Li Shibin
机构信息
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), Chengdu, 610054, Sichuan, China.
Chongqing Engineering Research Center of New Energy Storage Devices and Applications, Chongqing University of Arts and Sciences, Chongqing, 402160, People's Republic of China.
出版信息
Nanoscale Res Lett. 2020 May 13;15(1):108. doi: 10.1186/s11671-020-03338-5.
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 (HO) additive is introduced into the perovskite precursor solution to prepare high-quality 2D perovskite films. The 2D perovskite film treated with 3% HO shows a good surface morphology, increased crystal size, enhanced crystallinity, preferred orientation, and low defect density. The fabricated 2D PVSC with 3% HO exhibits a higher PCE compared with that without HO (12.15% vs 2.29%). Furthermore, the shelf stability of unsealed devices with 3% HO 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.
引导二维（2D）钙钛矿薄膜的结晶是提高二维钙钛矿太阳能电池（PVSCs）功率转换效率（PCE）的重要策略。本文将去离子水（HO）添加剂引入钙钛矿前驱体溶液中，以制备高质量的二维钙钛矿薄膜。用3% HO处理的二维钙钛矿薄膜表现出良好的表面形貌、增大的晶体尺寸、增强的结晶度、择优取向和低缺陷密度。与未添加HO的二维PVSC相比，制备的含3% HO的二维PVSC表现出更高的功率转换效率（12.15%对2.29%）。此外，含3% HO的未密封器件在环境条件下的储存稳定性也得到显著提高。这项工作提供了一种制备高质量二维钙钛矿薄膜的简单方法，用于高效稳定的二维PVSCs。
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