调节捐助者和接受者之间的结晶性不匹配,以改善高效有机太阳能电池中的激发/电荷传输
Xunfan Liao1, Mingtao Liu1, Hongqiao Pei1
1Key Laboratory of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Jiangxi Normal University, 99 Ziyang Avenue, Nanchang, 330022, China.
Angewandte Chemie (International ed. in English)
|January 15, 2024
概括
一种新的液晶小分子 (LCSM) 通过平衡电荷传输和减少重组来提高有机太阳能电池 (OSC) 的性能. 这一战略提高了效率超过20%.
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:
- 形态控制是有效的有机太阳能电池 (OSC) 的关键,最大限度地减少重组和改善电荷传输.
- 供体和受体结晶度的差异往往会阻碍二元混合OSCs的性能.
研究的目的:
- 引入一种新的液晶小分子 (LCSM),BDTPF4-C6,以调节OSC中的活性层形态.
- 通过改善电荷运输平衡和减少重组,提高基于PM6:Y6的OSC的性能.
主要方法:
- 将多功能LCSM BDTPF4-C6集成到一个PM6:Y6二元组合中.
- 在活性层中调查LCSM兼容性和自我组装行为.
- 分析电荷传输,重组机制和能量传输过程.
主要成果:
- BDTPF4-C6,第一个基于四黄单元的LCSM,有效地减少了结晶性差异.
- 这种LCSM的作用是播种剂,增强PM6的结晶性,促进平衡的电荷传输.
- 观察到双福斯特共振能量转移,从而改善了电流密度和抑制了重组.
结论:
- 战略性纳入LCSM BDTPF4-C6为优化OSC的形态和收费运输提供了一个简单的方法.
- 这种方法成功地提高了单环OSC的效率超过20%,证明了未来应用的巨大潜力.
关键词:
结晶性差异的差异转移能量转移能量是什么?液晶 液晶 小分子 小分子有机太阳能电池是有机太阳能电池.四二二二四二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二更多相关视频
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