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Preparation and Characterization of Polymer Light Emitting Diodes with ITO/PEDOT:PSS/MEH-PPV/LiF/Al Structure
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Preparation and Characterization of Polymer Light Emitting Diodes with ITO/PEDOT:PSS/MEH-PPV/LiF/Al Structure

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Abstract:

Polymer light emitting diodes (PLEDs) with ITO/PEDOT:PSS/MEH-PPV/LiF/Al structures were prepared by spin coating method on the patterned ITO(indium tin oxide)/glass substrates. MEH-PPV [Poly(2-methoxy-5(2-ethylhexoxy)-1,4-phenylenevinyle)] and PEDOT:PSS [poly(3,4-ethylenedioxythiophene):poly(styrene sulfolnate)] polymers were used as the light emitting and hole transport materials. The dependence of the plasma treatment of ITO anode films on the optical and electrical properties of the PLEDs was investigated. The sheet resistances increased with increasing the plasma intensities from 40W to 300W in RF power. In contrast, the surface roughness was improved as the plasma intensity increased. The maximum current density and luminance were found to be about 97.5 mA/ and 55 cd/m2 at 8 V for the PLED sample coated on ITO/glass substrate with plasma treatment of 100W for 30s under 40 mtorr O2 pressure.

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Periodical:

Key Engineering Materials (Volumes 321-323)

Pages:

1699-1703

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.321-323.1699

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Online since:

October 2006

Authors:

Jae Hyouk Yoo, Ho Jung Chang, Su Cheol Gong, In Jae Baek, Hyun Seong Lim, Gee Keun Chang, Young Chol Chang, Hee Joon Kim

Keywords:

Indium Tin Oxide (ITO), Luminance, MEH-PPV, Plasma Treatment, Polymer Light Emitting Diode

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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