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Enhanced Power Conversion Efficiency of P3HT : PC71BM Bulk Heterojunction Polymer Solar Cells by Doping a High-Mobility Small Organic Molecule

机译:通过掺杂高迁移率的小有机分子,增强P3HT的功率转换效率:PC71BM致氟连接聚合物太阳能电池

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摘要

The effect of molecular doping with TIPS-pentacene on the photovoltaic performance of polymer solar cells (PSCs) with a structure of ITO/ZnO/poly(3-hexylthiophene-2,5-diyl) (P3HT) : [6,6]-phenyl C71-butyric acid methyl ester (PC71BM) : TIPS-pentacene/MoOx/Ag was systematically investigated by adjusting TIPS-pentacene doping ratios ranged from 0.3 to 1.2 wt%. The device with 0.6 wt% TIPS-pentacene exhibited the enhanced short-circuit current and fill factor by 1.23 mA/cm2 and 7.8%, respectively, resulting in a maximum power conversion efficiency of 4.13%, which is one-third higher than that of the undoped one. The photovoltaic performance improvement was mainly due to the balanced charge carrier mobility, enhanced crystallinity, and matched cascade energy level alignment in TIPS-pentacene doped active layer, resulting in the efficient charge separation, transport, and collection.
机译:用ITO / ZnO /聚(3-己基噻吩-2,5-二基)(P3HT)的结构对聚合物太阳能电池(PSCs)光伏性能对聚合物太阳能电池(PSC)的光伏性能的影响(P3HT):[6,6] - 苯基C71-丁二酸甲基酯(PC71BM):通过调节尖端 - 五烯掺杂比率为0.3-1.2wt%来系统地研究了提示 - 五苯甲酸酯/ MOOX / AG。具有0.6wt%尖端五烯的装置,分别显示出增强的短路电流和填充因子1.23mA / cm2和7.8%,导致最大功率转换效率为4.13%,这是比其高的三分之一未掺杂的一个。光伏性能改善主要是由于平衡的电荷载流子迁移率,增强的结晶度和匹配的级联能量水平对准,导致有效的电荷分离,运输和收集。

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