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自吸附的小分子电子传输层:用于厚度不敏感的有机太阳能电池的海湾改性二胺衍生物

Wentian Wan¹, Dan Zhou¹, Lin Hu²

¹Key Laboratory of Jiangxi Province for Persistent Pollutants, Control and Resources Recycle, Nanchang Hangkong University, 696 Fenghe South Avenue, Nanchang, 330063, China.

|September 15, 2025

概括

新的二胺 (PDI) 衍生物增强有机太阳能电池 (OSC). 这些电子传输层 (ETL) 显示出显著的厚度不敏感性和改善的稳定性,这对于商业可行性至关重要.

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:

商业上可行的有机太阳能电池 (OSC) 需要具有强大的厚度不敏感的电子传输层 (ETL).
开发新型ETL材料对于提高OSC性能和稳定性至关重要.

研究的目的:

合成和评估两个二胺 (PDI) 衍生物ETL,PDI-SFXA和PDI-NHSF,以提高OSC的厚度不敏感性和稳定性.
研究分子结构,特别是硫胺基和结合长度对ETL特性的影响.

主要方法:

PDI-SFXA和PDI-NHSF衍生品的综合.
理论计算以评估电子捐赠特性和电荷转移.
电子偏磁共振 (EPR) 谱学用于量化n型自我兴奋剂.
制造和测试具有不同ETL厚度的OSC设备.
对OSC设备进行长期稳定性测试.

主要成果:

与PDI-NHSF相比,PDI-SFXA表现出更强的电子捐赠特性和明显更高的n型自我兴奋剂 (超过六倍) 由于硫胺基.
PDI-SFXA具有更长的联长度,从而提高导电性和电子移动性.
使用PDI-SFXA的OSC在40nm厚度下保持了90%以上的峰值功率转换效率 (PCE),而PDI-NHSF在30nm厚度下显著退化.
基于PDI-SFXA的OSC显示出更高的效率,并在180小时后保留了90%以上的初始PCE.

结论:

PDI衍生物的分子工程,特别是通过海湾位置的修改和促进n型自我兴奋剂,显著提高ETL的厚度不敏感性.
开发的PDI-SFXA ETL为有机太阳能电池提供了卓越的性能和长期稳定性,为商业应用铺平了道路.

关键词:

密度函数理论密度函数理论电子传输层是电子传输层.n型的自我兴奋剂.有机太阳能电池是有机太阳能电池.厚度不敏感性不敏感性

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P-N junction

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