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Updated: May 23, 2025

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Xinya Ran^1,2,3, Chi Zhang^1,3, Dingding Qiu^1,3

¹CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, China.

Advanced materials (Deerfield Beach, Fla.)

|May 22, 2025

概括

在小分子受体中不对称的青替代增强有机太阳能电池的性能和稳定性. 这种新的方法带来了更高的效率和设备的优良耐热性.

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:

基 (-CN) 功能化是优化有机太阳能电池 (OSC) 中小分子受体 (SMA) 的关键,因为它具有电子吸收和极性.
功能组的战略配置对于调整SMA的电子和光物理性质至关重要.

研究的目的:

合成和研究新型的SMA,在中心核中用青替代.
探索非对称与对称的青替代对分子性质和设备性能的影响.
了解利用这些新型SMA在OSC的绩效提升背后的机制.

主要方法:

合成了四种新型的SMA:phCN-F,phCN-Cl,2phCN-F和2phCN-Cl,其中包括青替代.
理论和实验分析,以评估刺激性质,分子包装和相位分离.
有机太阳能电池设备的制造和测试,以评估性能和热稳定性.

主要成果:

不对称的青替代显著影响分子包装和相分离,改善激子解离,电荷传输和提取.
基于phCN-F的OSC实现了创纪录的功率转换效率20.16%,超过了对称替换的同行.
使用phCN-F的设备表现出极好的热稳定性,在85°C下3000小时后保持超过90%的效率.

结论:

中核中的不对称的青替代是一种设计高性能SMA的有希望的策略.
这种方法为优化分子设计提供了有价值的见解,以实现创纪录的效率和有机太阳能电池的增强稳定性.
这些发现为开发下一代有机光伏材料铺平了道路.

关键词:

不对称的青改性酸.激发和载体动态的激发和载体动态有机太阳能电池是有机太阳能电池.小分子受体的受体.

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