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全小分子有机太阳能电池采用艾利尔罗丹因加工,实现了18.43%的效率突破
Duoling Cao1,2,3,4, Lian Zhong5,6, Zhe Sun7
1Zhejiang Key Laboratory for Island Green Energy and New Materials, Taizhou University, Taizhou, China.
Nature communications
|January 28, 2026
概括
固体添加剂 (SAs) 通过控制形态来增强有机太阳能电池 (OSC). 一种新的添加剂,3-allylrhodanine (3-AR),优化了所有小分子的OSC,实现了创纪录的功率转换效率.
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:
- 固体添加剂 (SAs) 对于改善有机太阳能电池 (OSC) 形态和性能至关重要.
- 然而,在全小分子 (ASM) OSC 中,它们的有效性受到强烈的捐赠体-接受体结晶性以及不清楚的潜在机制的阻碍.
研究的目的:
- 调查一种新型SA,3-基 (3-AR) 在控制ASMOSCs的形态学中的作用.
- 阐明3-AR影响捐赠者-接受者相互作用和膜形成的机制.
- 在二进制ASM-OSC中实现高功率转换效率 (PCE).
主要方法:
- 合成和应用3-利罗丹 (3-AR) 作为一个SA.
- 结合理论计算和薄膜形态分析 (例如,放牧发生率广角X射线散射).
- 基于MPhS-C2:N3的ASM-OSC的设备制造和表征.
主要成果:
- 3-AR,结构上与MPhS-C2供体相似,精确地控制了活性层的形态.
- 3-AR优先与N3受体相互作用,指导形态演化.
- 3-AR缩小了膜形成窗口,抑制聚合并促进垂直的捐赠者-接受者的均性.
- 优化的形态增强了电荷解离/收集,减少了重组,并延长了载体寿命.
- 经3AR处理的MPhS-C2:N3装置实现了创纪录的PCE18.43% (认证18.16%).
结论:
- 在ASM-OSC中添加剂的有效性取决于平衡的选择性相互作用,而不仅仅是结构相似性.
- 通过精确的形态控制,3-AR可以在二进制ASM-OSC中显著提高性能.
- 这项研究为设计高性能有机太阳能电池的有效添加剂提供了关键的见解.
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