推进直接C-H化衍生的星形寡合体的集成,作为第三级有机太阳能电池的第二受体
Ling-Jun Yang1, Yu Wu1,2, Pachaiyappan Murugan1
1Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, Department of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China.
添加BFD-2FIC作为第三个组件显著提高有机太阳能电池的性能. 这颗星形的电子接受器增强了光收获和薄膜形态,导致三元器件的更高功率转换效率.
科学领域:
- 有机电子学有机电子学
- 材料科学是一种材料科学.
- 太阳能光伏发电是如何实现的
背景情况:
- 三级散体异质连接 (BHJs) 通过优化光吸收和能量水平对齐来提高有机太阳能电池 (OSC) 功率转换效率 (PCE) 的途径.
- 开发新的电子受体对于推进OSC技术至关重要.
研究的目的:
- 合成和评估新型星形未化环电子受体 (SSUFREAs) 作为OSCs的第三组件.
- 调查SSUFREAs对PM6:Y6和PM6:BTP-eC9二进制BHJ的性能的影响.
主要方法:
- 通过直接的C-H结合,轻松合成四种SSUFREAs (BD-IC,BFD-IC,BD-2FIC,BFD-2FIC).
- 将SSUFREAs纳入PM6:Y6和PM6:BTP-eC9二进制系统的三元OSC的制造和表征.
- 对光学吸收,形态和光伏参数的分析 (PCE,J_SC).
主要成果:
- 合成的SSUFREAs表现出互补的吸收光谱,增强光收获.
- 将BFD-2FIC作为第三个组件加入,使PM6:Y6 BHJ的PCE从15.31%提高到16.85%,PM6:BTP-eC9 BHJ从16.23%提高到17.23%.
- 三元PM6:Y6:BFD-2FIC装置显示PCE显著增加9.7%,这是由于增强的短路电流 (J_SC) 和改进的薄膜形态.
结论:
- BFD-2FIC显示出作为三元OSC的有效第三组件的巨大潜力.
- 简单的合成和性能提升凸显了SSUFREAs在推进OSC技术中的实用性.
- 使用互补吸收和优化形态的三元策略是实现高效有机太阳能电池的关键.
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