Efficiency Enhancement of Polymer Solar Cells Based on Poly(3‐hexylthiophene)/Indene‐C70 Bisadduct via Methylthiophene Additive
Efficiency Enhancement of Polymer Solar Cells Based on Poly(3‐hexylthiophene)/Indene‐C70 Bisadduct via Methylthiophene Additive
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DOI：
10.1002/aenm.201100378
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发表时间：
2011-11
影响因子：
27.8
通讯作者：
Yeping Sun;Chaohua Cui;Haiqiao Wang;Yongfang Li
中科院分区：
文献类型：
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作者：
Yeping Sun;Chaohua Cui;Haiqiao Wang;Yongfang Li
通过添加3体积%的3-甲基噻吩（MT）或3-己基噻吩（HT）作为加工添加剂，改善了基于聚（3-己基噻吩）（P3 HT）作为供体和茚-C70双加合物（IC 70 BA）作为受体的聚合物太阳能电池的光伏性能。紫外-维斯吸收光谱、X射线衍射分析和原子力显微镜的结果表明，加入MT或HT加工助剂后，P3 HT/IC 70 BA共混物的活性层吸光度增强，结晶度提高，膜形貌改善。PSC的功率转换效率（PCE）从没有添加剂的装置的5.80%提高到具有HT添加剂的装置的6.35%和具有MT添加剂的装置的6.69%。6.69%的PCE是迄今为止基于P3 HT的PSC报告的最高值。
Photovoltaic performance of polymer solar cells based on poly(3‐hexylthiophene) (P3HT) as the donor and indene‐C70 bisadduct (IC70BA) as the acceptor is improved by adding 3 vol% 3‐methylthiophene (MT) or 3‐hexylthiophene (HT) as processing additives. The results of UV‐vis absorption spectroscopy, X‐ray diffraction analysis and atomic force microscopy indicate that with the MT or HT processing additive, the active layer of the blend of P3HT/IC70BA showed strengthened absorbance, enhanced crystallinity and improved film morphology. The power conversion efficiency (PCE) of the PSCs was improved from 5.80% for the device without the additive to 6.35% for the device with HT additive and to 6.69% with MT additive. The PCE of 6.69% is the top value reported so far for the PSCs based on P3HT.