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KMID : 1059519970410030144
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Journal of the Korean Chemical Society
1997 Volume.41 No. 3 p.144 ~ p.149
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Syntheses of Improved Polymer/Organic Materials for Electroluminescence(EL) Device and Electro-Optical Characteristics(Ⅱ) Properties of EL Device using Squarylium Dye as Emitting Material
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Kim Sung-Hoon
Bae Jin-Seok
Hwang Seok-Hwan
Park Lee-Soon
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Abstract
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Organic electroluminescence devices(ELD) were fabricated using by molecularly doped method with N,N’-diphenyl-N,N’-bis(3-methylphenyl)-1,1’-biphenyl-4,4’-diamine(TPD) as a hole transport agent, squarylium dye as an emitting agent, and side chain liquid crystalline polymer(MCH) as matrix for TPD. An indium-tin-oxide(ITO) coated glass and an Mg electrode were used as the hole and the electron injecting electrode, respectively. The highest stability of ELD was obtained by spin coating method using dichloroethane as a solvent at a polymer/TPD concentration of 0.005 wt%. For the EL cell with ITO/polymer-TPD/SQ dye/Mg structure, we achieved light red luminescence at a current of 102 mA/cm2 with an applied voltage of 23 V.
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KEYWORD
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