通过建立有效的捐赠者-接受者界面分子相互作用,提高层次有机光伏的效率超过19%
Yongchao Xie1,2, Kai Wang1,2, Haomiao Yu1,2
1Key Laboratory of Luminescence and Optical Information, Ministry of Education, School of Physical Science and Engineering, Beijing Jiaotong University, Beijing 100044, China.
ACS applied materials & interfaces
|March 4, 2025
概括
在层次有机太阳能电池 (LOSC) 中的溶剂选择显著影响了捐赠/接受器接口的形成. 优化干燥动力学和溶剂相互作用可以提高性能,从而提高功率转换效率.
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:
- 一层一层的有机太阳能电池 (LOSC) 通过顺序处理 (SqP) 实现高效率.
- 了解相位分离,特别是分层与垂直形态,对于LOSC设计至关重要,但仍然不清楚.
- 溶剂相互作用对捐赠/接受 (D/A) 接口形成的确切作用尚未完全阐明.
研究的目的:
- 系统地研究溶剂对LOSC干燥动态的影响.
- 为了澄清上层和底层相互作用如何影响D/A接口形成和LOSC性能.
- 通过控制的界面形态学建立设计原则,以提高LOSC效率.
主要方法:
- 在连续沉积过程中对溶剂对干燥动力学影响的系统研究.
- 关于D/A接口形成的上层和底层之间的相互作用分析.
- 基于优化界面属性的功率转换效率 (PCE) 的评估.
主要成果:
- 上层溶剂在建立D/A接口方面起着至关重要的作用,而不是诱导显著的分层.
- 在SqP的混合造中,以溶剂效应为指导,成功地引入了适当的D/A接口.
- 通过优化界面工程,通过优化界面工程实现了19.05%的优异功率转换效率.
结论:
- 溶剂选择和干燥动力学是控制LOSC中D/A接口形成的关键.
- 通过特定的溶剂特性促进的有效的D/A接口相互作用,对于高性能LOSCs至关重要.
- 提出了三个设计规则:选择接受器溶剂以实现晶体方向,选择上层溶剂以实现界面溶解,并建立足够的D/A接口.
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