在反向矿太阳能电池中使用有机金属复合体调节电极工作功能
Jiantao Wang1,2, Jinhua Li3, Yecheng Zhou4
1Department of Materials Science and Engineering, Southern University of Science and Technology, Xueyuan Avenue 1088, Shenzhen 518055, China.
Journal of the American Chemical Society
|April 27, 2021
概括
新的有机金属复合物通过减少金属工作功能 (WF) 来显著提高矿太阳能电池 (PSC) 的稳定性和效率. 这些阴极间层提高了设备的性能和寿命,即使是像黄金这样的高功能的金属.
科学领域:
- 材料科学
- 太阳能发电
- 化学学
背景情况:
- 由于氧化和腐蚀,反向矿太阳能电池 (PSC) 的外部阴极中的低工作功能的 (WF) 金属 (Ag,Al,Cu) 降解,限制了设备的稳定性.
- 阴极间层 (CIL) 可以减少金属WF并提高功率转换效率 (PCE),但与黄金 (Au) 等高WF金属作斗争.
研究的目的:
- 开发新的有机金属复合物作为CIL用于反向PSC中的调节电极WF.
- 通过使用这些新的CIL来提高PSC的PCE和长期稳定性.
主要方法:
- 有机金属复合物的合成.
- 密度函数理论 (DFT) 的计算和表面特征分析 WF 减少机制.
- 使用修改的Ag和Au阴极的倒置PSC的制造和测试
主要成果:
- 有机金属复合物在金属表面形成阴离子二极体,大大减少WF.
- 由于双极增强载体运输,银 (Ag) 阴极PSC实现了21.29%的增强PCE和83.52%的填充系数.
- 黄金 (Au) 阴极PSC显示环境稳定性改善,在4080小时的储存后没有效率损失.
结论:
- 合成的有机金属复合物有效地减少金属WF,提高PSC的性能.
- 这些CIL可以使用像Au这样的高WF金属来提高PSC的稳定性和效率.
- 这些发现为开发稳定高效的矿太阳能电池提供了有希望的策略.
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