亚克里丁替代中心核非富勒烯受体使有机太阳能电池具有20%以上的效率,具有低非辐射重组损失
Jinfeng Liu1, Xiaopeng Duan1, Junjie Zhang1
1School of Chemistry, Beihang University, Beijing, 100191, P.R. China.
Angewandte Chemie (International ed. in English)
|April 3, 2025
概括
研究人员将发光性亚克里丁单元引入昆素受体中,以提高有机太阳能电池 (OSC) 的效率. 这一策略显著减少了能量损失,在高性能OSC中实现了创纪录的低非辐射能量损失 (ΔEnr).
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:
- 有机太阳能电池 (OSC) 由于非辐射能量损失而面临效率挑战.
- 基于昆素的受体分子是OSC的关键组成部分.
- 优化分子聚合和结晶是改善电荷传输的关键.
研究的目的:
- 开发基于昆素的新型受体分子,具有增强的光发光量子产量 (PLQY).
- 通过分子设计抑制OSC中的非辐射能量损失 (ΔEnr).
- 提高OSC的功率转换效率 (PCE) 和电光量子效率 (EQEEL).
主要方法:
- 合成基于昆素的受体分子 (AQx-o-Ac和AQx-m-Ac) 与发光性亚克里丁单元的中央核替代.
- 使用新型接受分子制造的二元和三元OSC设备.
- 描述了设备性能,包括PCE,EQE和DE,并分析了分子聚合和结晶.
主要成果:
- 这种新型的AQx-m-Ac受体表现出增强的PLQY和改善的分子聚合和结晶.
- 二元OSCs (PM6:AQx-m-Ac) 实现了18.64%的PCE,在PCE超过18%的设备中创下了0.166 eV的创纪录的低ΔEnr.
- 结合AQx-m-Ac的第三级OSC实现了20.28%的优异PCE.
结论:
- 引入发光性亚克里丁单元是增强PLQY和抑制OSCs非辐射能量损失的有效策略.
- 优化的分子结构促进了电荷的提取和运输,从而提高了设备的性能.
- 这项工作为开发下一代高效有机光伏设备提供了可行的途径.
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