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一种基于diarylethene的聚合物添加剂,用于抑制有机光二极管中的暗电流和增强光响应

Xiaopeng Zhang¹, Minming Yan¹, Yanan Zhu²

¹GuangDong Engineering Technology Research Center of Multi-Dimensional Optoelectronic Materials, Shenzhen Graduate School, Peking University, China AI for Science (AI4S)-Preferred Program, Peking University Shenzhen Graduate School, Shenzhen, China.

|February 15, 2026

概括

基于二甲的聚合物 (DEP) 通过减少暗电流和增强光电流来提高有机光二极管的性能. 这导致显著提高检测能力,展示了它们对先进光电子应用的潜力.

科学领域:

有机电子学有机电子学
光电二极管是指光电二极管,它是指光电二极管.
材料科学是一种材料科学.

背景情况:

迪亚利 (DAE) 已知具有可逆光异构化和可调节的电子特性.
有机光二极管 (OPD) 是对光敏感的光电子设备.
控制OPD中的电荷传输和光响应对于性能提升至关重要.

研究的目的:

设计和整合基于二乙烯的聚合物 (DEP) 作为有机光二极管 (OPD) 的光活性层中的添加剂.
调查DEP对OPD性能指标的影响,包括暗电流密度,光电流密度和检测能力.
阐明DEP引发的性能提升背后的机制.

主要方法:

一种基于二甲的聚合物 (DEP) 的合成.
有机光二极管 (OPD) 的制造,含有或不含DEP添加剂.
在照明下使用电流密度-电压 (J-V) 测量对OPD性能进行表征.
机械因素的分析,包括带隙调制,分子相互作用,激子扩散和光诱导的基质中间体.

主要成果:

在PM6:PC61BM中加入6%的DEP显著提高了OPD性能.
实现了1.20 × 10−9 A cm−2的抑制暗电流密度 (Jd),增加了9.66 × 10−4 A cm−2的光电流密度 (Jp),以及2.02 × 1013 斯的卓越检测能力 (D*).
控制OPD (没有DEP) 的表现优于Jd为4.31 × 10−7 A cm−2,Jp为7.02 × 10−4 A cm−2和D*为8.38 × 1011 Jones.

结论:

通过抑制暗电流和增加光电流,DEP有效地提高了OPD的性能.
机制研究表明,DEP调节带隙和分子相互作用,通过光诱导的基质中间体增强激子扩散和光导性.
开发的DEP添加剂在推进高性能有机光二极管技术方面显示出显著的前景.

关键词:

用二甲基乙烯合的聚合物添加剂.低暗电流有机光二极管摄影异构化过程的过程.阳性光导电性是正的光导电性激进分子中间体的中间体.

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