Highly Conductive and Transparent Poly(3,4-ethylenedioxythiophene):p-Toluene Sulfonate Films as a Flexible Organic Electrode

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概要

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• Highly transparent and conductive poly(3,4-ethylenedioxythiophene):p-toluene sulfonate (PEDOT:PTS) films were prepared by gas-phase polymerization using the chemical vapor deposition (CVD) technique for flexible organic electrodes. These conductive PEDOT:PTS films have a high transparency (up to 80%), and possess a very low sheet resistance of a 100 $\Omega$/$\square$ (up to 2500 S cm-1) at 150 nm thickness. Their sheet resistance attained 27 $\Omega$/$\square$ at 350 nm thickness with O2 plasma doping. The 1–3 mm pitched pattern can also be easily formed by plasma etching and/or the selective exposure technique of O2 plasma. This electrode film has a higher transmittance than an amorphous indium–tin oxide (a-ITO) electrode film with thickness under 120 nm, and their conductivities were comparable with the a-ITO layer. We report on the fabrication and characterization of a flexible organic light-emitting diode (OELD) using PEDOT:PTS for the electrodes. The device is demonstrated to exhibit light emission and a brightness level up to 1800 cd/m2 at 25 V.

• 2009-09-25

著者

• Lee Jung-Hyun

  School of Advanced Materials Engineering, Kookmin University, Sungbuk-gu, Seoul 136-702, Korea

• Kim Jin-Yeol

  School of Advanced Materials Engineering, Kookmin University, Sungbuk-gu, Seoul 136-702, Korea

• Jung Woo-Gwang

  School of Advanced Materials Engineering, Kookmin University, Sungbuk-gu, Seoul 136-702, Korea

• Kim Tae-Wook

  School of Advanced Materials Engineering, Kookmin University, Sungbuk-gu, Seoul 136-702, Korea

• Kwon Si-Joong

  School of Advanced Materials Engineering, Kookmin University, Sungbuk-gu, Seoul 136-702, Korea

• Ju Sung-Hoo

  Department of Advanced Materials Science and Engineering, Daejin University, Pocheon, Kyonggi-do 487-711, Korea

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