Organic thin-film transistor with printed electrodes by using microcontact and direct printing processes (Electron devices: 第15回先端半導体デバイスの基礎と応用に関するアジア・太平洋ワークショップ(AWAD2007))

概要

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Printed organic thin-film transistor(OTFT) to use as a switching device for an organic light emitting diode(OLED) were fabricated in the microcontact printinn and direct printing processes at room temperature. The gate electrodes(5μm, 10μm, and 20μm) of OTFT was fabricated using microcontact printing process, and source/drain electrodes(W/L=500μm/5μm, 500μm/10μm, and 500μm/20μm) was fabricated using direct printing process with hard poly(dimethylsiloxane)(h-PDMS) stamp. Printed OTFT with dielectric layer was formed using special coating system and organic semiconductor layer was ink-jet printing process. The microcontact and direct printing processes using h-PDMS stamp made it possible to fabricate printed OTFT with channel lengths down to 5μm, and reduced the process by 20 steps compared with photolithography. As results of measuring the transfer characteristics and output characteristics of OTFT fabricated with the printing process, the field effect characteristic was verified.
社団法人電子情報通信学会の論文
2007-06-18