基于有机双层的双极性有机场效应晶体管研究进展

Recent Progress in Ambipolar Organic Field-Effect Transistors Based on Organic Semiconductor Bilayer

由双极性有机场效应晶体管(OFETs)制备的有机互补电路具有操作电压低、能耗低和成本低等优点,在有机互补电路方面有很大的应用前景,引起了科学家们极大的研究兴趣.同时具有高且匹配的空穴迁移率和电子迁移率的双极性有机半导体分子是制备高性能有机互补电路的必要条件之一,然而迄今为止该类双极性有机半导体分子的报道比较少,大部分双极性有机半导体分子的空穴和电子传输不匹配;高性能单极性有机半导体分子报道已有成千上万种,选择迁移率相匹配的n型有机半导体分子和p型有机半导体分子构筑具有垂直双层导电沟道的有机场效应晶体管是制备高性能双极性有机场效应晶体管的有效方法.总结了构筑基于有机双层的高性能双极性有机场效应晶体管的必要条件,已报道的有机双层场效应晶体管的电学性能,以及影响双极性场效应性能的因素.

Complementary circuits made of ambipolar organic field-effect transistors(OFETs)have the advantages of low signal to noise ratio,low operation voltage,low power consumption,and so on.Up to now,only a few ambipolar organic semiconductors with balanced hole and electron mobilities have been reported,which is one of the key requirements for high performance complementary circuits.There are thousands of high performance unipolar organic semiconductors.The conducting channels based on both an n-type and a p-type organic semiconductors,which have matched mobilities,will be an effective way to build a high performance ambipolar OFETs.In this review,the key requirements,the electrical properties,and factors correlating with the performance of ambipolar OFETs based on organic bilayer are reported.