双孔运输层使有机太阳能电池能够实现20.42%的效率,通过对盐表面上自组装分子的聚合控制
Xingjian Dai1, Yingfeng Li1, Hongjia Li1
1School of Chemical Engineering and State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, P. R. China.
Small (Weinheim an der Bergstrasse, Germany)
|March 26, 2025
概括
研究人员通过对盐进行铜剂和紫外线臭氧处理来改造有机太阳能电池 (OSC) 的新型孔输送层 (HTL). 这改善了电荷传输和减少了重组,实现了20.42%的高功率转换效率.
科学领域:
- 材料科学 材料科学 材料科学
- 有机电子 有机电子
- 太阳能光伏发电是如何实现的
背景情况:
- 异质连接接口对于有机太阳能电池 (OSC) 中的电荷载体传输至关重要,直接影响光伏性能.
- 接口工程,特别是微观结构和纳米形态控制,落后于OSC研究中的光活性层进展.
研究的目的:
- 开发一种策略,以控制Me-4PACz (4P) 在OSC中作为孔输送层 (HTL) 的自组装增长.
- 通过铜和紫外线臭氧处理优化无机盐的表面结构,以提高HTL性能.
主要方法:
- 使用铜剂和紫外线臭氧处理,修改了无机盐的表面.
- 控制了可溶于酒精的Me-4PACz (4P) 的自我组装,以达到统一的虫状形态.
- 优化电气和光学性能,使缺陷被动化并改善有机溶剂的湿透性.
主要成果:
- 实现了光滑的顶部表面,增加了Co3+/Co2+比率和基团.
- 促进了Me-4PACz (4P) 从球形聚合物过渡到类似虫的形态.
- 证明了改善的孔提取和减少界面电荷载体重组.
- 在使用Cu-Co/4P HTL的OSC中,实现了创纪录的功率转换效率20.42% (认证为20.20%).
结论:
- 设计的Cu-Co/4P HTL通过优化的接口特性显著提高OSC性能.
- 开发的HTL具有普遍性和稳定性,适合广泛应用.
- 通过接口工程,为OSC性能进一步提高提供了合理化的指导.
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