不完全结合的二元化巨型受体与不同的基连接站点,用于稳定和19.13%的效率有机太阳能电池
Fan Yi1,2, Manjun Xiao1, Yongdie Meng1
1College of Chemistry, Key Lab of Environment-Friendly Chemistry and Application (Ministry of Education), Xiangtan University, Xiangtan, 411105.
Angewandte Chemie (International ed. in English)
|February 9, 2024
概括
研究人员开发了有机太阳能电池 (OSC) 的新型二度化巨型受体. 2Y翼接受器显著提高了二进制和三进制设备的功率转换效率 (PCE) 和稳定性,达到创纪录的19.13%的PCE.
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:
- 同时实现高功率转换效率 (PCE) 和运行稳定性仍然是有机太阳能电池 (OSC) 广泛采用的关键障碍.
- 分子设计在优化OSC中活性层的光电子特性和形态学方面发挥着至关重要的作用.
研究的目的:
- 设计和合成新型非完全结合的二元化巨型受体,具有不同的基链接位点.
- 调查这些新接受者的结构-属性关系及其对OSC绩效的影响.
- 通过分子工程来增强OSC的PCE和稳定性.
主要方法:
- 三个二元化巨型受体 (2Y翼,2Y核心,2Y末端) 的合成,具有明显的基连接位置.
- 使用这些受体的二进制和三进制有机太阳能电池的制造和表征.
- 形态分析,电荷转移研究和设备性能测试 (PCE,稳定性).
主要成果:
- 2Y翼接受器在二进制设备 (D18/2Y翼) 中表现出卓越的混合性和优化的形态,导致PCE为17.73%.
- 基于2Y翼的OSC显示出高PCE和增强的稳定性之间的有希望的平衡.
- 结合2Y-wing的第三级OSC由于补充吸收和改善形态学,实现了创纪录的PCE19.13%.
结论:
- 对二元化巨型受体的基连接站点工程是一种有效的策略,可以同时改善OSC中的PCE和稳定性.
- 2Y翼接受器代表了高性能有机太阳能电池的重大进步.
- 这种分子设计方法为未来的OSC开发提供了一个有希望的途径.
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