用于高效的聚合物太阳能电池的聚合M系列受体:分子形状的影响
Yuhang Zhu1,2,3, Hui Guo1,4, Xiaoying Xiong5
1State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China.
Advanced materials (Deerfield Beach, Fla.)
|March 21, 2024
概括
新型聚合物太阳能电池 (PSC) 使用新的聚合小分子受体 (PSMA) 具有优化的配置. 一个以中心对称的SMA为基础的PSMA实现了15.65%的功率转换效率 (PCE),明显优于其轴对称的对应物.
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:
- 高性能聚合小分子受体 (PSMA) 对于推进聚合物太阳能电池 (PSC) 至关重要.
- 现有的ADA型SMA在实现所需的光伏性能方面存在局限性.
- 对具有改进性质的新型PSMAs有很大的需求.
研究的目的:
- 设计和合成使用中心对称和轴对称ADA型SMA的新型区域常规PSMA.
- 调查SMA配置对PSMA光伏性能的影响.
- 在PSC中实现高功率转换效率 (PCE).
主要方法:
- 基于ADA型SMA的两个新型区域常规PSMA (PW-Se和PS-Se) 的合成.
- 使用这些PSMAs的PSC设备的制造和表征.
- 优化SMA配置以提高设备性能.
主要成果:
- 与PS-Se (轴对称SMA) 相比,使用中心对称SMA的PW-Se显示出优异的脊柱共平面性,红移吸收,更高的吸收系数和更紧密的π-π堆叠.
- 基于PW-Se的设备表现出增强的电荷传输,改进的激子解离和减少的电荷重组.
- 最佳的PM6:PW-Se装置实现了15.65%的PCE,明显高于PM6:PS-Se装置 (8.90%).
- 结合PW-Se的三元器件在ADA类型的基于SMA的PSC中实现了创纪录的PCE18.0%.
结论:
- 优化ADA型SMAs的配置对于提高PSC中的PSMA性能至关重要.
- 基于中心对称的SMA的PSMA比轴对称的对应产品具有显著的优势.
- 开发的PSMA,特别是PW-Se,对高效的PSC来说是一个有希望的进步.
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