Indene Addition of [6,6]-Phenyl-C61-butyric Acid Methyl Ester for High-Performance Acceptor in Polymer Solar Cells
Indene Addition of [6,6]-Phenyl-C61-butyric Acid Methyl Ester for High-Performance Acceptor in Polymer Solar Cells
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DOI：
10.1021/jp111200u
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发表时间：
2011-02
影响因子：
3.7
通讯作者：
Youjun He;Bo Peng;Guangjin Zhao;Y. Zou;Yongfang Li
中科院分区：
文献类型：
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作者：
Youjun He;Bo Peng;Guangjin Zhao;Y. Zou;Yongfang Li
为了结合茚-C60双加成物和茚-C60双加成物在聚合物太阳能电池（PSC）中作为受体的优点，采用茚-C60双加成物与[6，6]-苯基-C61-丁酸甲酯（PC60 BM）在180 °C下一锅反应12 h，合成了茚-PC60 BM（IPC 60 BM）。IPC 60 BM的最低未占分子轨道（LUMO）能级比PC 60 BM的最低未占分子轨道（LUMO）能级上移了0.12 eV。在AM 1.5G、100 mW/cm 2的光照下，以聚3-己基噻吩（P3 HT）为供体、IPC 60 BM为受体的PSC的Voc为0.72 V，功率转换效率（PCE）为4.39%，而以P3 HT/PC 60 BM为受体的PSC的Voc为0.58 V，PCE为3.49%。结果表明，IPC 60 BM是一个更好的受体比PC 60 BM为基础的P3 HT的PSC，并可能是一个有前途的新的受体，而不是PC 60 BM的高性能PSC。
Indene addition product of [6,6]-phenyl-C61-butyric acid methyl ester (PC60BM), indene-PC60BM (IPC60BM), was synthesized by a one-pot reaction of indene and PC60BM at 180 °C for 12 h, for combining the advantages of PC60BM and indene-C60 bis-adduct in the application as acceptor in polymer solar cells (PSCs). The lowest unoccupied molecular orbital (LUMO) energy level of IPC60BM is 0.12 eV up-shifted than that of PC60BM. The PSC based on poly(3-hexylthiophene) (P3HT) as donor and IPC60BM as acceptor shows a higher Voc of 0.72 V and higher power conversion efficiency (PCE) of 4.39% under the illumination of AM1.5G, 100 mW/cm2, while the PSC based on P3HT/PC60BM displays Voc of 0.58 V and PCE of 3.49% only. The results indicate that IPC60BM is a better acceptor than PC60BM for the P3HT-based PSCs and could be a promising new acceptor instead of PC60BM for high-performance PSCs.