Indene-C60 Bisadduct: A New Acceptor for High-Performance Polymer Solar Cells
Indene-C60 Bisadduct: A New Acceptor for High-Performance Polymer Solar Cells
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DOI：
10.1021/ja908602j
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发表时间：
2010-02-03
影响因子：
15
通讯作者：
Li, Yongfang
中科院分区：
文献类型：
--
作者：
He, Youjun;Chen, Hsiang-Yu;Li, Yongfang
聚合物太阳能电池（PSC）通常由夹在ITO阳极和低功函数金属阴极之间的共轭聚合物供体和可溶性C-60衍生物受体的共混膜组成。聚（3-己基噻吩）（P3 HT）和[6，6]-苯基-C-61-丁酸甲酯（PCBM）分别是应用最广泛的给体和受体材料。然而，PCBM的低LUMO能级将基于P3 HT的PSC的开路电压（V-oc）限制为约100 V。0.6在这里，我们合成了一种新的可溶性C-60衍生物，茚-C-60双加合物（ICBA），LUMO能级为0。17 eV。在AM1.5，100 mW/cm（2）的光照下，以P3 HT为受体，ICBA为受体的PSC显示出更高的V-oc（0.84 V）和更高的功率转换效率（PCE）（5.44%），而以P3 HT/PCBM为受体的PSC在相同的实验条件下显示出更高的V-oc（0.58 V）和PCE（3.88%）。结果表明，ICBA是一种可替代的高性能受体，可广泛应用于高性能PSC。
Polymer solar cells (PSCs) are commonly composed of a blend film of a conjugated polymer donor and a soluble C-60 derivative acceptor sandwiched between an ITO anode and a low-workfunction metal cathode. Poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl-C-61-butyric acid methyl ester (PCBM) are the most widely used donor and acceptor materials, respectively. However, the low LUMO energy level of PCBM limits the open circuit voltage (V-oc) of the P3HT-based PSCs to ca. 0.6 V. Here we synthesized a new soluble C-60 derivative, indene-C-60 bisadduct (ICBA), with a LUMO energy level 0. 17 eV higher than that of PCBM. The PSC based on P3HT with ICBA as acceptor shows a higher V-oc of 0.84 V and higher power conversion efficiency (PCE) of 5.44% under the illumination of AM1.5, 100 mW/cm(2), while the PSC based on P3HT/PCBM displays a V-oc of 0.58 V and PCE of 3.88% under the same experimental conditions. The results indicate that ICBA is an alternative high-performance acceptor and could be widely used in high-performance PSCs.