在有机太阳能电池中提高机械耐用性和长期稳定性,通过灵活的链接器-序列块共聚合捐赠体
Congqi Lin1,2, Ruixiang Peng2, Wei Song2
1School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, P. R. China.
Angewandte Chemie (International ed. in English)
|November 29, 2024
概括
新型柔性块共聚合物显著提高有机太阳能电池的性能和耐用性. 这些多元件共聚合捐赠器 (MCD) 为先进的可穿戴电子产品实现高效率和机械稳定性.
科学领域:
- 材料科学 材料科学 材料科学
- 有机电子 有机电子
- 聚合物化学 聚合物化学
背景情况:
- 多组件共聚合捐赠体 (MCD) 为灵活的有机太阳能电池 (f-OSC) 提供可调节的特性.
- 现有的MCD往往缺乏机械强度,限制了它们在可穿戴应用中的使用,尽管它们具有良好的结晶性.
研究的目的:
- 开发具有提高机械耐用性和光伏性能的新型灵活链接器顺序块MCD (Fs-MCD).
- 研究将灵活的功能组纳入聚合物骨干对设备特征的影响.
主要方法:
- 合成了一系列Fs-MCDs,包括PM6-Cl0.8-b-D18-Cl0.2-BTB,PM6-Cl0.8-b-D18-Cl0.2-BTH,以及PM6-Cl0.8-b-D18-Cl0.2-BTD. 这三种类型的物质.
- 将灵活的功能组纳入结合聚合物骨架,以创建拉伸活性位点.
- 在f-OSC中评估开发材料的机械性能 (裂纹发生应变) 和光伏性能 (效率,稳定性).
主要成果:
- PM6-Cl0.8-b-D18-Cl0.2-BTD在原始薄膜中达到49.88%的裂纹开始应变 (COS),在混合物中达到31.29%,显示出显著的机械耐用性.
- 实现了高功率转换效率:18.09% (刚性二进制),19.05% (三进制) 和16.63% (灵活的OSC).
- 在倒置的OSC中,其T80为9,078小时,证明了设备的良好稳定性.
结论:
- 开发的Fs-MCD显示了光伏性能,机械性能和设备稳定性的协同改进.
- 这种分子设计策略是推动f-OSC在可穿戴设备中的应用的一个有希望的途径.
- 高的COS值代表了基于Fs-MCD的OSC的一个重要里程碑.
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