Exploring Photovoltaic Feasibility of Pentaaryl [60]Fullerene in Bulk Heterojunction Architecture
Exploring Photovoltaic Feasibility of Pentaaryl [60]Fullerene in Bulk Heterojunction Architecture
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DOI：
10.2494/photopolymer.27.553
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发表时间：
2014-07
影响因子：
0.8
通讯作者：
Tsubasa Mikie;A. Saeki;Naohiko Ikuma;Ken Kokubo;S. Seki
中科院分区：
文献类型：
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作者：
Tsubasa Mikie;A. Saeki;Naohiko Ikuma;Ken Kokubo;S. Seki
针对五芳基[60]富勒烯（PAC 60）在体异质结有机光伏（OPV）中的应用，利用荧光光谱和瞬态吸收光谱研究了PAC 60的光化学过程。通过将C60加入到PAC 60中观察到荧光猝灭，其中强度以指数方式降低。在电子受体存在下，在925 nm处鉴定了PAC 60的光生自由基阳离子。基于PAC 60的浅分子轨道能级，我们对全富勒烯OPV进行了概念性研究，其中PAC 60和[6，6]-苯基-C61-丁酸甲酯（PCBM）分别被假定为p型和n型半导体。功率转换效率为0.007%，远小于P3 HT（p型）和PAC 60（n型）的常规组合所发现的0.05%。光电导和光谱结果的基础上，讨论了机制。
The photochemical process of pentaaryl [60]fullerenes (PAC60) has been investigated by fluorescence and transient absorption spectroscopies, aiming at their use in bulk heterojunction organic photovoltaic (OPV). Fluorescence quenching was observed by adding C60 into PAC60, where the intensity was decreased in an exponential manner. The photo-generated radical cation of PAC60 was identified at 925 nm in the presence of electron acceptor. Motivated from the observed shallow molecular orbital levels of PAC60, we performed conceptual study of all-fullerene OPV, where PAC60 and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) were presumably used as a p-type and n-type semiconductor, respectively. The power conversion efficiency was 0.007%, much smaller than 0.05% found for the conventional combination of P3HT (p-type) and PAC60 (n-type). The mechanism is discussed on the basis of photoconductive and spectroscopic results.