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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.

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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%.

关键词:
所有的小分子有机太阳能电池都是有机的.双通道的福斯特共振传输能量.激发效率利用效率的使用效率.一层一层的层次.形态学 形态学 形态学

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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.