稳定的FAPbI3矿太阳能电池的阴离体和八面体协同调节3
Guangcai Hu1, Ziyue Zhao2, Yang Shen2
1State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, and Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, Zhejiang, 310027, P. R. China.
Small (Weinheim an der Bergstrasse, Germany)
|April 14, 2025
概括
使用三环基三甲硫酸盐,提高了formamidinium酸矿的稳定性. 这种添加剂减轻了降解,提高了太阳能电池的效率和寿命.
科学领域:
- 材料科学 材料科学 材料科学
- 可再生能源可再生能源是可再生能源.
- 固态化学 固态化学
背景情况:
- 酸 (FAPbI3) 矿是太阳能电池的有希望的吸光剂.
- 由于FA+离子挥发和相变,FAPbI3存在不稳定性.
- 在FAPbI3中不对称的键加快了降解,影响了设备的性能和稳定性.
研究的目的:
- 制定FAPbI3矿材料的稳定策略.
- 为了提高基于FAPbI3的矿太阳能电池 (PSC) 的长期运行稳定性和效率.
- 调查键和八面体结构在FAPbI3稳定性中的作用.
主要方法:
- 将三环基酸三甲硫酸盐 (Cy3PH+SO3CF3-) 纳入FAPbI3矿中.
- 分析键的强化和减轻八面体变形.
- 在热/湿度应力和载体动态下相稳定性的表征.
主要成果:
- Cy3PH+SO3CF3-有效地强化了FA+离子内部的键.
- 添加剂减轻了[PbI6]4-八面体变形,减轻了内部压力.
- 优化的FAPbI3 PSC实现了25.93%的效率,并在1500小时运行后保持了97%的效率.
结论:
- 三环基酸三甲硫酸是稳定FAPbI3矿的一种强大的添加剂.
- 稳定FAPbI3表现出更好的相位稳定性,载体动态和能量水平对齐.
- 该战略显著提高了基于FAPbI3的PSC的效率和长期耐用性.
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