基于苝酸酯受体光伏器件的性能表征

近十几年来，基于有机聚合物半导体材料的太阳能电池，由于具有价格低廉，易于加工，不受材料种类限制和易于制备大面积柔性器件等优点，而受到极大关注．自从1992年发现从共轭聚合物的基态到富勒烯存在光诱导电子转移现象以来，有机聚合物太阳能电池的研究取得了较大进展，研究较多的是共轭聚合物为给体(D)，富勒烯为受体(A)的体系，能量转换效率可达3．3％，苝酸酯是一类液晶材料，其结构高度有序且含有4个吸电子的酰基，使得它们适合电子传输，且在普通有机溶剂中具有良好的溶解性，与共轭聚合物有较好的相容性，因此可制成薄膜，本文的研究表明，苝酸酯也是一类良好的电子受体，与共轭聚合物给体匹配，可用于制备光伏器件——太阳能电池。

Characterizations of Photovoltaic Devices Based on Novel Acceptors of Perylenetetracarboxylates

The perylenetetracarboxylates were used as electron acceptors and electron transport materials in the preparation of plastic solar cells for the first time. Bulk heterojunction photovoltaic devices were fabricated with conjugated polymer of poly(3-hexyl thiophene) (P3HT) as the donor and perylenetetracarboxylates as the acceptors. Their photovoltaic performance parameters were measured. It is found that the open circuit voltage of the device is closely related to the acceptor strength of perylenetetracarboxylate acceptors.