星分支的聚合物捐赠者使高性能有机太阳能电池具有卓越的灵活性和内在的伸展性
Cen Zhang1,2, Xiaopeng Duan3, Chunhui Liu2
1Hangzhou International Innovation Institute, Beihang University, Hangzhou, China.
Nature communications
|November 19, 2025
概括
研究人员开发了具有提高机械强度和高功率转换效率 (PCE) 的灵活有机太阳能电池 (OSC). 这一突破提高了可穿戴电子产品OSC的可靠性.
科学领域:
- 材料科学 材料科学 材料科学
- 有机电子 有机电子
- 可再生能源可再生能源是可再生能源.
背景情况:
- 可穿戴电子产品需要灵活和可伸缩的电源.
- 有机太阳能电池 (OSC) 具有潜力,但在平衡功率转换效率 (PCE) 和机械强度方面面临挑战.
- 为了灵活性而进行的分子修改往往会降低电荷传输.
研究的目的:
- 设计和合成星分支聚合物供体 (SPD),以提高OSC的机械性能和光电子性能.
- 为了克服可穿戴应用的光伏材料的灵活性和效率之间的权衡.
主要方法:
- 合成了三种SPD (S1,S2,S3) 含有不同含量的1,3,5-三甲.
- 将SPD集成到OSC设备中,并评估它们的机械性能 (断裂应变) 和光电子性能 (PCE).
- 研究了自组装行为和由此产生的膜形态学.
主要成果:
- 与线性聚合物 (10.46%) 相比,SPDs表现出明显增强的骨折应变 (高达19.16%),改善了抗应力.
- 基于S2:L8-BO的OSC实现了高的PCE: 19.51% (刚性),18.39% (柔性) 和15.40% (伸展性).
- 三级OSC的PCE达到了20.48%,证明了出色的绩效保留.
结论:
- 分子工程策略成功地平衡了OSC中的PCE和机械合规性.
- 开发的SPD可以为可穿戴电子产品创建高性能,可靠的电源.
- 这项工作为商业化先进的OSC铺平了道路.
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