阿尔科西侧链对高效有机太阳能电池基于诺素的电子受体的影响
1Laboratory of Advanced Optoelectronic Materials, Suzhou Key Laboratory of Novel Semiconductor-Optoelectronics Materials and Devices, College of Chemistry, Chemical Engineering, and Materials Science, Soochow University, Suzhou 215123, Jiangsu, China.
用dialkoxy替代的昆素受体通过增强分子平面性和电荷传输来改善有机太阳能电池的性能. 这导致了高功率转换效率 (PCEs) 与单氧或替代对应物相比.
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:
- 小分子受体对于有机太阳能电池 (OSC) 是至关重要的.
- 基于诺素的受体提供可调节的电子特性.
- 了解替代物效应是优化OSC性能的关键.
研究的目的:
- 调查以太基替代剂对基于诺素的小分子受体的影响.
- 为了将分子结构与物理化学和光电性质相关联.
- 为了提高有机太阳能电池的功率转换效率 (PCE).
主要方法:
- 三个基替代类昆素受体 (BQO-F,BQDO-F,BQDO-Cl) 的合成.
- 分子结构,吸收光谱和能量水平的表征.
- 使用这些接受器的有机太阳能电池设备的制造和测试.
主要成果:
- 与BQO-F相比,用dialkoxy替代的BQDO-F表现出增强的平面性,红移吸收,向上移的能量水平,以及改善的结晶性.
- 基于BQDO-F的OSC实现了比基于BQO-F的设备 (14.48%) 更高的PCE (16.41%).
- BQDO-Cl显示出红移光谱,但 π-π 包装较差,导致比 BQDO-F.低的 PCE (15.89%)
结论:
- 乙氧替代剂显著影响诺素受体的特性.
- 分子平面性和包装顺序对于高性能OSC至关重要.
- BQDO-F代表了高效的有机太阳能电池的一个有前途的小分子受体.
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