双异质结结构的双极型有机薄膜晶体管的研制

Abstract

Ambipolar organic thin film transistors( OTFTs) based on copper hexadecafluorophthalocyanine( F16 Cu Pc) and copper phthalocyanine( Cu Pc) with double heterojunction were fabricated.The carrier mobility was 4-5 times enhanced compared with that of double layer-architecture devices under the same process. The double heterojunction effect was attributed to the great enhancement which showed an effective way to promote the performance of ambipolar OTFTs. The double heterojunction architecture also provided another way to adjust the carrier threshold voltage and decrease the critical dependence of the film thicknesses in double layer architecture.