Beijing Advanced Innovation Center for Materials Genome Engineering, Research Center for Sensor Technology, Beijing Key Laboratory for Sensor, MOE Key Laboratory for Modern Measurement and Control Technology, School of Applied Sciences, Beijing Information Science and Technology University, Jianxiangqiao Campus, Beijing 100101, China.
State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China.
Molecules. 2020 Feb 7;25(3):732. doi: 10.3390/molecules25030732.
In recent years, flexible perovskite solar cells have drawn tremendous attention in the field of wearable devices, and optimization of perovskite composition plays an important role in improving film quality and photophysical properties. At present, some researchers have only studied A-site organic cations mixing or X-site halide anions mixing in the ABX structure of perovskite, but there are few reports on co-mixing of A-site and X-site ions in flexible perovskite solar cells. In this paper, we mainly try to study the effects of different concentrations of mixed formamidine methylamine halide (FAMABrClI) precursor solutions on the quality and photophysical properties of perovskite films under low temperature process. We conclude that the film quality and photophysical properties reached the best results when the optimized precursor solution concentration was 60:6:6. The investigation on composition optimization in this experiment laid the foundation for the improvement of the performance of flexible perovskite solar cells. We also use the results of this experiment to prepare flexible perovskite solar cells based on carbon electrodes, which are expected to be applied in other flexible optoelectronic or electro-optical devices.
近年来，柔性钙钛矿太阳能电池在可穿戴设备领域引起了极大关注，而优化钙钛矿的组成对于提高薄膜质量和光物理性质起着重要作用。目前，一些研究人员仅研究了钙钛矿 ABX 结构中 A 位有机阳离子混合或 X 位卤化物阴离子混合，但对于柔性钙钛矿太阳能电池中 A 位和 X 位离子的共混研究较少。在本文中，我们主要尝试研究不同浓度的混合甲脒甲基胺卤化物（FAMABrClI）前体溶液在低温处理下对钙钛矿薄膜的质量和光物理性质的影响。我们得出结论，当优化的前体溶液浓度为 60:6:6 时，薄膜质量和光物理性质达到最佳效果。本实验中的组成优化研究为提高柔性钙钛矿太阳能电池的性能奠定了基础。我们还利用该实验的结果制备了基于碳电极的柔性钙钛矿太阳能电池，预计将应用于其他柔性光电或电光器件中。
