聚乙烯醇作为绝缘层的有机场效应晶体管

Organic Field Effect Transistors with PVA Insulating Layer

报道了一种有机场效应晶体管,它采用聚乙烯醇作为绝缘层,ITO作为栅极,酞菁铜作为有机半导体层,铝作为源漏电极。采用旋涂和真空掩蔽蒸发法,成功研制出了绝缘层为聚乙烯醇的有机场效应晶体管。经测试器件的载流子迁移率为4.56×10-3 cm2.V-1.s-1,开关比为300。器件显示出良好的输出特性,表明聚乙烯醇是一种合适的有机场效应晶体管绝缘层材料。

Reported is a kind of organic field effect transistor（OFET）,which applies aluminum（Al） as the source/drain electrode,polyvinyl alcohol（PVA） as the insulating layer,ITO as the gate electrode and CuPc as the active layer.With the methods of spin coating and vacuum evaporation,the OFET with PVA insulating layer is sucessfully fabricated.Experimental results show that a high carrier mobility of 4.56×10-3 cm2·V-1·s-1 and high on/off ratio of 300 are achieved.This shows PVA is a suitable insulation material for OFETs.