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双不对称的固体添加剂使环保全聚合物太阳能电池具有超过19%的效率和出色的稳定性

Qiming Liang¹, Henan Li¹, Wan Xu²

¹Guangdong Engineering Technology Research Center for Photoelectric Sensing Materials & Devices, Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, Guangdong, 510006, P. R. China.

Angewandte Chemie (International ed. in English)

|January 23, 2025

概括

一种新的固体添加剂 (SL-1) 增强了全聚合物太阳能电池 (全PSC) 的形态和稳定性. 与传统的溶剂添加剂相比,这种方法实现了创纪录的效率,并显著延长了运行寿命.

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:

全聚合物太阳能电池 (全PSC) 的优化通常使用溶剂添加剂.
溶剂添加剂的高沸点导致它们被困,随着时间的推移降低了设备的性能.
需要稳定,高性能和环保的制造方法,用于所有PSCs.

研究的目的:

引入一种新的双非对称固体添加剂 (SL-1),用于所有PSC形态的优化.
研究SL-1对聚合物聚合,混合物形态和设备性能的影响.
提高环保型全民公益企业的效率和运营稳定性.

主要方法:

设计和合成一个双非对称的固体添加剂,单化非对称的dithienothiophene (SL-1).
利用不对称置换和核心结构的协同效应来调整分子二极极 Moment.
使用SL-1制造全PSC设备,并评估形态,效率和长期稳定性.

主要成果:

在全聚合物活性层中,SL-1促进了高度有序的π-π堆叠和有利的相隔形态.
在环保全PSC中实现了创纪录的功率转换效率19.19%,超过了控制添加剂SL-0 (18.37%) 和SL-2 (16.60%).
经SL-1处理的设备在2140小时后保持了90%以上的初始效率,外推T80寿命为12400小时,明显超过溶剂添加剂稳定性.

结论:

双不对称的固体添加剂是优化所有PSCs所有聚合物形态的一个有效策略.
SL-1为环保制造高效和稳定的全PSC提供了有希望的进步.
这种方法克服了传统溶剂添加剂的局限性,为更耐用的有机太阳能电池铺平了道路.

关键词:

所有聚合物太阳能电池都是聚合物太阳能电池不对称的不对称性绿色溶剂是一种绿色溶剂.固体添加剂是一种固体添加剂.

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