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中文摘要：
近年来，有机薄膜晶体管（OTFFs）因其成本低、加工简便，特别适用于制备大面积柔性器件而引起人们的广泛关注．并苯类化合物和噻吩衍生物是目前最重要的两类高迁移率OTFT材料．由并五苯制备的多晶OTFFs器件迁移率可达到5cm^2／（V·s）；烷基修饰齐聚噻吩的场致迁移率也可达到非晶硅[0．1～1cm^2／（V·s）]的水平．但是，这两类材料具有较窄的能隙和较高的最高被占分子轨道（HOMO）能级，容易与空气中的氧气和水发生作用，所制备的器件在空气中衰减较快，
英文摘要：
Synthesis and characterization of 2,5-bis （2-phenanthrenyl） -thieno [ 3,2-b ] thiophene （PhTT） were reported. The compound exhibits a great thermal stability. Absorption measurements and electrochemical characterization revealed that PhTT has a relative broad bandgap and low HOMO （ the highest occupied molecular orbital） level. The field-effect mobility （μFET ） of PhTT from top-contact thin film transistors was 0. 021 cm^2/（ V · s）. The thin film transistors of PhTT show a good environmental stability.
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