在M系列接受器中通过结合长度工程延长激子寿命,以达到19.39%的效率聚合物太阳能电池
Wenxiong Shen1, Xiaoying Xiong1, Dongdong Cai2
1State Key Laboratory of Coordination Chemistry, College of Engineering and Applied Sciences, Nanjing University, Nanjing 210023, China.
National science review
|January 26, 2026
概括
研究人员为聚合物太阳能电池 (PSC) 开发了新的非富勒受体 (NFAs). 新型二元化NFA,DM-8F,实现了创纪录的效率和增强的稳定性,克服了NFA开发的关键挑战.
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:
- 为高效率和稳定的聚合物太阳能电池 (PSC) 开发非富勒受体 (NFAs) 是至关重要的.
- 现有的接受者-捐赠者-接受者 (A-D-A) NFA 在平衡性能和寿命方面面临挑战.
- M系列接收器为NFA设计提供了一个有前途的框架.
研究的目的:
- 根据AD-A框架设计和合成基于AD-A框架的新型二元化NFAs (DM-8F和DM-8Cl).
- 研究终端素原子对NFA特性和光伏性能的影响.
- 通过使用新的NFA,在PSC中实现高效率和更好的稳定性.
主要方法:
- 用不同的终端素合成两个二元化NFAs (DM-8F和DM-8Cl).
- 热特性 (玻璃过渡温度) 和介电常数的表征.
- 在小面积的PSC和最小模块中评估光伏性能.
- 分析电荷传输,刺激子结合能量和扩散长度.
主要成果:
- 与M68.8相比,DM-8F和DM-8Cl显示了玻璃过渡温度和介电常数的增加.
- 终端素的选择显著影响了π-π包装,激素扩散和设备性能.
- 在小面积的PSC中,DM-8F实现了创纪录的19.39%的功率转换效率,在最小模块中达到15.72%.
- 基于DM-8F的设备显示出卓越的热和光稳定性.
结论:
- 配合适当的终端素的二元化NFA可以显著提高PSC的性能和稳定性.
- DM-8F代表了一种突破性的AD-A型NFA,提供了报告中最高的效率.
- 这些发现为设计下一代NFA用于高效和耐用的太阳能电池提供了宝贵的见解.
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