在A-DA'D-A受体的内侧链中引入一个末组,使得高效的有机太阳能电池能够使用非化溶剂处理
Xiangxi Wu1,2, Xin Jiang1,2, Xiaojun Li1,2
1Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
Advanced materials (Deerfield Beach, Fla.)
|July 29, 2023
概括
在小分子受体 (SMA) 中引入一个末组,可以提高使用非化溶剂处理的有机太阳能电池 (OSC) 的形态和功率转换效率 (PCE).
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:
- 在有机太阳能电池 (OSC) 中的功率转换效率 (PCE) 由于膜形态不良,在使用非化溶剂处理时通常是有限的.
- 在非化溶剂中缓慢膜形成过程中,小分子受体 (SMA) 的过度聚合会导致性能降低.
研究的目的:
- 通过加入一个末组,合成新的SMA,Y6-Ph和L8-Ph.
- 调查这种结构修改对SMA聚合和使用非化溶剂加工的OSCs光伏性能的影响.
- 通过分子设计控制膜形态来优化OSC性能.
主要方法:
- 合成了两种新的SMA:Y6-Ph和L8-Ph,其中包括末基.
- 使用Y6,L8-BO,Y6-Ph和L8-Ph的OSC的制造和表征.
- 使用常见溶剂 (,) 和非化溶剂 (o-xylen) 的光伏性能评估.
- 分析膜形成性质和形态变化的分析.
主要成果:
- 基于Y6和L8-BO的OSC显示,由于相隔,在从快速 () 转换为缓慢 () 处理时,PCE显著下降.
- 包含Y6-Ph和L8-Ph的OSC证明了PCE的改善,表明形态稳定性得到了增强.
- 使用o-xylen加工的基于L8-Ph的OSC实现了18.40%的高PCE,填充因子 (FF) 为80.11%.
结论:
- 在SMA的内侧链中引入一个末组是调节形态的有效策略.
- 这种分子设计显著提高了由非化溶剂加工的OSCs的光伏性能.
- 开发的SMA为高效和环保的有机太阳能电池制造提供了一个有希望的途径.
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