AVS 56th International Symposium & Exhibition
    Thin Film Thursday Sessions
       Session TF-ThP

Paper TF-ThP40
Improvement of Ohmic Contact Property of a Inkjet Printed TIPS-pentacene Schottky Diode by Employing SAM and PEDOT:PSS Layers

Thursday, November 12, 2009, 6:00 pm, Room Hall 3

Session: Aspects of Thin Films Poster Session
Presenter: J.M. Kwon, Sungkyunkwan University, Korea
Authors: J.M. Kwon, Sungkyunkwan University, Korea
K.H. Kim, Sungkyunkwan University, Korea
J.H. Heo, Sungkyunkwan University, Korea
I.S. Chung, Sungkyunkwan University, Korea
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Inkjet printing technology has attracted a large of attention increasingly because of its low cost fabrication, capability with flexible substrate and high-throughput. Especially, organic schottky diode is thought to play an important role to operate a Radio Frequency Identification (RFID) at high frequency. In this paper, we fabricated organic schottky diodes using inkjet printer with two different sizes of diameters, namely, 50um and 30um. Au was deposited on polyethersulfone (PES) substrate, and then printed 6,13-bis(tri-isopropylsilylethynyl) pentacene ( TIPS - pentacene ) using ink-jet printer. Finally, Silver was form schottky contact with TIPS-pentacene layer. In an effort to improve ohmic contact, we utilized self-assembled-monolayer (SAM) and Poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS) between gold and TIPS- pentacene layer, respectively. Keithley 4200 and Scanning probe microscopy (SPM) were used to examine the physical and electrical properties.