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高性能聚3-基硫基有机光伏与侧链工程的小分子受体的核心单元

Bin Chang¹, Chung-Hao Chen¹, Ting-Fang Hsueh¹

¹Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan.

ACS applied materials & interfaces

|November 3, 2023

概括

研究人员开发了有机太阳能电池的新型小分子受体,使用聚3-基烯 (P3HT) 实现了10.5%的功率转换效率 (PCE). Y6-IO2F接受器表现出最佳的形态和增强的电荷传输,展示了商业可行性.

科学领域:

材料科学:新型有机半导体的合成和特征.
能源科学:开发用于散装异质连接有机光伏 (OPV) 的材料.

背景情况:

有机光伏 (OPV) 为传统太阳能电池提供了一个有希望的替代方案.
小分子受体对于OPV中有效的电荷分离和运输至关重要.
调整分子结构是优化OPV性能的关键.

研究的目的:

合成和评估四个新的小分子接受器,具有不同的核心结构和末端组.
研究分子设计对基于P3HT的OPV的形态,电荷传输和光伏性能的影响.
探索开发的有机太阳能电池设备的热和光稳定性.

主要方法:

四个小分子受体的合成:Y1-IO2F,Y1-IO2Cl,Y6-IO2F和Y6-IO2Cl.
使用聚3-基硫 (P3HT) 作为捐赠材料制造大量的异质连接有机太阳能电池.
使用紫外线吸收,同步广角X射线散射 (WAXS) 和接触角度测量进行了表征.
设备性能测试包括功率转换效率 (PCE) 和短路电流密度 (Jsc).

主要成果:

P3HT:Y6-IO2F混合物表现出最佳的形态,结晶性和可混合性,导致冠军PCE为10.5%和Jsc为15.9mA/cm2.
与Y1-IO2F接受器相比,Y6-IO2F接受器及其TPBT核心显示出优越的分子包装,并促进了载体运输.
具有Y6-IO2F和Y6-IO2Cl的器件由于平面TPBT核心而显示出增强的热稳定性,而Y6-IO2Cl和Y1-IO2Cl显示出更好的光稳定性.
使用环保溶剂四水夫进行加工,凸显了这些OPV的商业可行性.

结论:

Y6-IO2F小分子接受器显著提高了基于P3HT的有机太阳能电池的性能.
分子设计,特别是TPBT核心,在实现最佳形态和电荷传输方面发挥着关键作用.
开发的材料和加工方法证明了可持续和商业可行的有机光伏的潜力.

关键词:

高短路电流密度的高短路电流密度.混杂性混杂性混杂性侧链工程侧链工程小分子接受器核心热稳定性的热稳定性

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