具有控制脊柱平面性的巨型小分子捐赠者能够提供高性能和光稳定的有机太阳能电池
Hyerin Jeon1, Seunghoon Song2, Jin-Woo Lee1
1Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|November 19, 2025
概括
新的巨型小分子捐赠体 (GSMD) 提高有机太阳能电池 (OSC) 的效率和稳定性. 反配置的GSMD实现了15.4%的功率转换效率 (PCE) 和更好的光稳定性,克服了传统小分子捐赠者的局限性.
科学领域:
- 材料科学 材料科学 材料科学
- 有机电子 有机电子
- 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) 的商业化需要高功率转换效率 (PCE) 和长期稳定性.
- 小分子捐赠体 (SMD) 提供了优势,但由于扩散,它们在形态稳定性方面遇到了困难.
- 巨型小分子捐赠体 (GSMD) 通过增加分子大小提供了一个潜在的解决方案.
研究的目的:
- 设计和合成具有增强光电子性能的新型GSMD.
- 研究分子配置对热和电性质的影响.
- 使用GSMDs开发高效和光稳定的OSC.
主要方法:
- 合成了两个GSMD:GSMD-syn和GSMD-anti,在基侧链方向上有所不同.
- 使用这些具有Y6接收器的GSMD制造和特征化OSC.
- 评估了设备的PCE,形态稳定性和光稳定性.
主要成果:
- 由于降低了硬质障碍,增强了结晶性和改善了电荷传输,GSMD-anti 显示出了卓越的性能.
- 基于GSMD-anti:Y6的OSC实现了15.4%的PCE,超过了传统的SMD (13.4%) 和GSMD-syn (11.9%).
- 具有GSMD-anti的第三级设备达到16.5%的PCE,GSMD-anti:Y6的OSC显示显著增强光稳定性 (1510小时与60小时相比).
结论:
- GSMDs的反配置有效地抑制了分子扩散,从而改善了形态和光稳定性.
- GSMD,特别是GSMD-anti,是高性能和稳定的OSC的有前途的材料类.
- 这项工作为设计下一代有机光伏的先进材料提供了一条途径.
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