通过分子尺度距离调节用于高效的有机太阳能电池的厚度不敏感的阴极间层
Wen-Jing Sun1, Ya-Ting Wang1, Jia Wang2
1State Key Laboratory of Natural Product Chemistry, Key Laboratory of Special Function Materials and Structure Design (MOE), College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China.
Journal of the American Chemical Society
|January 27, 2026
概括
研究人员通过调整分子间距器开发了有机太阳能电池的新阴极间层材料 (CIM). 该P6材料具有出色的厚度耐受性和高效率,可实现可扩展的OSC生产.
科学领域:
- 材料科学
- 有机电子
- 太阳能发电
背景情况:
- 阴极间层 (CIL) 对于优化有机太阳能电池 (OSC) 性能至关重要.
- 开发用于大规模印刷的厚度不敏感的CIL材料是一个重大挑战.
研究的目的:
- 通过灵活的结合间隔长度调节分子尺度的距离来设计高效的CIM.
- 为OSC应用合成和评估具有不同间距长度的CIM.
主要方法:
- 合成了三种CIM (P3,P6,P9) 用三甲,六甲和非甲间隔剂连接二胺 (PyDI) 单元.
- 研究了间隔器长度对π-π堆叠,兴奋剂,导电性,电荷收集和激子利用的影响.
- 使用合成的CIM制造和测试OSC设备.
主要成果:
- P6表现出最佳的π-π堆叠,高效的Br-doping和增强的导电性,改善了电荷收集和激子利用.
- 基于P6的二元和三元OSC实现了分别为19.90%和20.04%的高功率转换效率 (PCE).
- P6 显示出优异的分批一致性,厚度耐受性 (在 133 nm 保持 80% 的 PCE) 和可扩展性.
结论:
- 分子尺度距离调节策略有效设计高性能,厚度不敏感的CIM.
- 对于工业规模生产高效的OSC,P6材料非常有前途.
- 这种方法有助于开发下一代有机太阳能电池.
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