接口结构与设备性能之间的相关性:酸在矿太阳能电池中的双刃剑效应
Bingchu Tian1, Yanbo Shang2, Yi Tu1
1National Synchrotron Radiation Laboratory, Department of Chemical Physics, University of Science and Technology of China, 230029, Hefei, China.
概括
将化 (PbI2) 添加到矿太阳能电池中,通过增强电荷传输来提高性能,但由于化迁移而降低稳定性. 这项研究揭示了PbI2
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.
- 太阳能光伏发电是如何实现的
背景情况:
- 接口电子结构对于矿太阳能电池 (PSC) 的性能和稳定性至关重要.
- 在前体溶液中过量的化 (PbI2) 可以提高PSC设备的性能,但机制尚不清楚.
研究的目的:
- 为了研究化甲基 (CH3NH3PbI3) /C60接口的电子结构,有或没有PbI2修改.
- 为了将接口结构的变化与设备的性能和稳定性相关联.
主要方法:
- 现场光辐射光谱学用于研究接口电子结构.
- 在具有和没有PbI2修改的设备上进行了性能和稳定性测试.
主要成果:
- PbI2的修改导致了界面双极反转,并增加了CH3NH3PbI3/C60界面的向下波段曲.
- 具有PbI2修改的设备显示出更快的电荷载体传输和更慢的重组.
- 然而,由于化物迁移增加,PbI2修改降低了设备的稳定性.
结论:
- PbI2充当了一把双刃剑,改善了充电动态,但损害了PSC的稳定性.
- 了解这些接口效应是优化PSC设计和性能的关键.
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