High-performance n-channel organic thin-film transistors based on the dual effects of heterojunction

• 作 者: 曹进 洪飞 邢菲菲 顾文 郭新安 张浩 魏斌 张建华 王军
• 机 构: Key Laboratory of Advanced Display and System Application(Shanghai University),Special Display Techn
• 出 处: Chinese Physics B
• 发表日期: 2010年03期
• 关键词: transistor drain attributed insulator phthalocyanine morphologic match junction

This paper presents two n-channel organic heterojunction transistors with modified insulator by using hexadecafluorophthalocyaninatocopper(F 16 CuPc)/copper phthalocyanine(CuPc) and F 16 CuPc/pentacene as the active layers.Compared with a single-layer device,it reports that an improved field-effect mobility and a 6-fold higher drain current are observed.The highest mobility of 0.081 cm 2 /(V·s) was obtained from F 16 CuPc/CuPc heterojunction devices.This result is attributed to the dual effects of the organic heterojunction and interface modification.Furthermore,for two heterojunction devices,the performance of the F 16 CuPc/CuPc-based transistor is better than that of F 16 CuPc/pentacene.This is attributed to the morphologic match of two organic components.

This paper presents two n-channel organic heterojunction transistors with modified insulator by using hexadecafluorophthalocyaninatocopper (F 16 CuPc) / copper phthalocyanine (CuPc) and F 16 CuPc / pentacene as the active layers. Compared with a single-layer device, it reports that an improved field-effect mobility and a 6-fold higher drain current are observed. The highest mobility of 0.081 cm 2 / (V · s) was obtained from F 16 CuPc / CuPc heterojunction devices. This result is attributed to the dual effects of the organic heterojunction and interface modification.Furthermore, for two heterojunction devices, the performance of the F 16 CuPc / CuPc-based transistor is better than that of F 16 CuPc / pentacene.This is attributed to the morphologic match of two organic components.