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Volume: 22 | Article ID: art00012_3
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High Resolution Electrodes Fabrication for OTFT by using Microcontact Printing Process
  DOI :  10.2352/ISSN.2169-4451.2006.22.2.art00012_3  Published OnlineJanuary 2006
Abstract

The organic thin film transistor (OTFT) array to use as a switching device for an organic light emitting diode (OLED) was designed and fabricated in the microcontact printing and room temperature process. The gate, source, and drain electrode patterns of OTFT were fabricated by microcontact printing process. The OTFT array with dielectric layer and organic active semiconductor layer formed at room temperature or at a temperature lower than 40 °C. The microcontact printing process using SAM and PDMS stamp made it possible to fabricate OTFT arrays with channel lengths down to even submicron size, and reduced the fabrication process by 10 steps compared with photolithography. Since the process was done in room temperature, there was no pattern shrinkage, transformation, and bending problem appeared. Also, it was possible to improve electric field mobility, to decrease contact resistance, to increase close packing of molecules by SAM, and to reduce threshold voltage by using a big dielectric.

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Jeongdai Jo, Taik-Min Lee, Choon-Hwan Kim, Dong-Soo Kim, Kwang-Young Kim, Masayoshi Esashi, "High Resolution Electrodes Fabrication for OTFT by using Microcontact Printing Processin Proc. IS&T Digital Fabrication Conf.,  2006,  pp 31 - 33,  https://doi.org/10.2352/ISSN.2169-4451.2006.22.2.art00012_3

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