Ultraviolet-Patternable Polymer Insulator for Organic Thin-Film Transistors on Flexible Substrates

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概要

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• In this work, we describe the fabrication of pentacene-based organic thin-film transistors (OTFTs) on a flexible substrate using a UV-patternable polymer material, mr-UVCur06, as the gate insulator. The device structure is poly(ethylene terephthalate) (PET)/indium--tin oxide (ITO)/mr-UVCur06/pentacene/Au (source/drain). In addition to its solution-processable capability, mr-UVCur06 is directly patternable by UV light in a low-temperature process. The OTFT has an on--off ratio that approaches $10^{5}$, and its pattern resolution can reach 5 μm. Additionally, UV/ozone post-treatment of the patterned mr-UVCur06 can illuminate the organic contaminants from its surface and significantly improve the performance of OTFTs. Moreover, the effect of UV/ozone post-treatment on the polymer dielectric is confirmed using a Fourier transform infrared (FT-IR) spectrometer. Owing to its highly desired characteristics such as photopatternability and low-temperature process, mr-UVCur06 is feasible for low-cost, large-area flexible device applications.

• 2011-04-25

著者

• Wu Chung-ming

  Department Of Electronic Engineering

• Fu Shen-li

  Department Of Electrical Engineering National Cheng Kung University

• Yokoyama Meiso

  Department Of Electrical Engineering National Cheng Kung University

• SU Shui-Hsiang

  Department of Electronic Engineering

• Wang Hong-Tai

  Department of Electronic Engineering, I-Shou University, Kaohsiung County 840, Taiwan

• Fu Shen-Li

  Department of Electronic Engineering, I-Shou University, Kaohsiung County 840, Taiwan

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