High resolution electrodes fabrication for OTFT by using microcontact printing process

Jeongdal Jo, Taik Min Lee, Choon Hwan Kim, Dong Soo Kim, Kwang Young Kim, Masayoshi Esashi

Research output: Chapter in Book/Report/Conference proceedingConference contribution


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.

Original languageEnglish
Title of host publicationDigital Fabrication 2006 - Final Program and Proceedings
Number of pages3
Publication statusPublished - 2006
Externally publishedYes
EventDigital Fabrication 2006 - Denver, CO, United States
Duration: 2006 Sept 172006 Sept 22

Publication series

NameDigital Fabrication 2006 - Final Program and Proceedings


OtherDigital Fabrication 2006
Country/TerritoryUnited States
CityDenver, CO

ASJC Scopus subject areas

  • Engineering(all)


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