双通道Förster共振能量转移 提升激发器利用效率 对于高性能层次处理的全小分子有机太阳能电池
Shizhao Liu1, Yanna Sun1, Meiyuan Zu2
1Shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion, Institute of Frontier Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Qingdao, 266237, P. R. China.
Advanced materials (Deerfield Beach, Fla.)
|July 7, 2025
概括
高性能全小分子有机太阳能电池 (ASM-OSCs) 是使用层次沉积策略开发的. 这种方法提高了刺激子利用率,并实现了创纪录的功率转换效率17.76%.
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:
- 全小分子有机太阳能电池 (ASM-OSCs) 提供了精确的分子结构和批量一致性等优势.
- 然而,与基于聚合物的设备相比,控制活性层形态限制了兴奋子利用率和功率转换效率 (PCE).
研究的目的:
- 通过提高活性层形态和刺激子利用效率来提高ASM-OSC性能.
- 为高性能ASM-OSCs开发一种新的存款策略.
主要方法:
- 将一个小分子捐赠体 (Por-BR) 纳入DAPor-DPP/6TIC系统的受体层.
- 使用逐层沉积 (LbL) 策略来控制混合物形态和垂直相位分布.
- 研究从Por-BR到捐赠物和接受物材料的双通道Förster共振能量转移 (FRET).
主要成果:
- LbL战略促进了活性层中明显的垂直相分布.
- 观察到双通道FRET,扩大了刺激子生成部位并增强了刺激子利用率.
- 优化的ASM-OSC实现了17.76%的功率转换效率 (PCE),这是该技术的重大进步.
- 还观察到载体移动性的改善和电荷重组的减少.
结论:
- 与双通道FRET相结合的LbL沉积策略有效地提高了ASM-OSC的性能.
- 这种方法为增加刺激利用率和设备效率提供了一条可行的途径.
- 取得的PCE是一个重要的里程碑,为ASM-OSCs的商业化铺平了道路.
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