AVS 58th Annual International Symposium and Exhibition
    Transparent Conductors and Printable Electronics Focus Topic Thursday Sessions
       Session TC-ThP

Paper TC-ThP2
Fabrication and Characterization of Sub-micron OTFT Using Ink Jet Combined Imprint Process

Thursday, November 3, 2011, 6:00 pm, Room East Exhibit Hall

Session: Transparent Conductors and Printable Electronics Poster Session
Presenter: Kyohyeok Kim, Sungkyunkwan Univ., Republic of Korea
Authors: K. Kim, Sungkyunkwan Univ., Republic of Korea
N. Kwon, Sungkyunkwan Univ., Republic of Korea
I. Chung, Sungkyunkwan Univ., Republic of Korea
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We fabricated sub-micron organic thin film transistors on polyethersulphone (PES) substrate using ink jet printing combined with an imprint method. The channel lengths of OTFTs were in the range between 500 nm and 1 um. 6,13-bis(triisopropylsilylethynyl) (TIPS) pentacene was used as an active material and Polyvinyl alcohol (PVA) was chosen as a gate insulator. TIPS pentacene was printed by jetting onto the confined channels which were prepared using imprinting. The surface of confined channel was modified by UV irradiation in order to enhance the crystallinity of tips pentacene. The physical properties were analyzed using SPM, SEM, and XRD. The electrical properties were extracted from the transfer characteristics which were measured using Keithley-4200.