High performance organic field-effect transistors

Wei Yang Chou, Yu Shen Mai, Chia Wei Kuo, Homg Long Cheng, Yi Ren Chen, Shih Ting Lin, Feng Yu Yang, Dun Yin Shu, Chi Chang Liao

研究成果: Conference contribution


The following report presents innovative technique for surface modification and device construction of top-contact pentacene-based thin film transistors (TFTs) with saturation mobility about 2.0 cm2/Vs. In the experiment we have utilized PSPI as a modification layer presenting a non-polar interface on which the semiconductor, pentacene, could grow. The surface of the modification layers was exposed to a polarized ultraviolet light with dose ranging from 0.2 J to 8 J. Ultraviolet light was applied to achieve a non-polar surface on which high performance TFTs have been subsequently fabricated. The experimental results showed that the parasitic contact resistances of silver electrodes could be extracted by gated-transfer length method, and the corrected field-effect mobility of pentacene TFTs for linear region was as high as 2.25 cm2/Vs. In this study, we were able to control the surface energy of polymer-based gate dielectric layers and the surface energy of the PSPI layer increasing the energy from about 38 to 42 mJ/m2 by differentiating doses of polarized ultraviolet light. When the PSPI film was exposed to 1 J of polarized ultraviolet light, the surface energy of PSPI, measured by the contact angle method, was about 38 mJ/m2. The measured energy matched the theoretically calculated surface energy of a pentacene crystal. Hence, the higher mobility OTFTs with low surface energy gate dielectric were obtained by spin-coating the PSPI as a modifier.

主出版物標題Organic Field-Effect Transistors V
出版狀態Published - 2006
事件Organic Field-Effect Transistors V - San Diego, CA, United States
持續時間: 2006 8月 132006 8月 15


名字Proceedings of SPIE - The International Society for Optical Engineering


OtherOrganic Field-Effect Transistors V
國家/地區United States
城市San Diego, CA

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 凝聚態物理學
  • 電腦科學應用
  • 應用數學
  • 電氣與電子工程


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