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Bright Blue Light-emitting Diodes Based on a Novel Fluorescent Dye Containing Heterocyclic Groups

Bright Blue Light-emitting Diodes Based on a Novel Fluorescent Dye Containing Heterocyclic Groups

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Abstract

Novel molecular material ,1-benzothiazoly-3-pheny1-pyrazoline (BTPP) was found to function as bright blue light emitting dye in organic electroluminescent device, and its optical and electric characteristics were investigated. This heterovyclic compound exhibited good characteristics of blue photoluminescence and electroluminescence,which had the emission peak at 450nm .The single layer light-emitting devices using BTPP as light -emitting material dispersed in poly(N-vinylcarbazole)(PVK) and double layer ones using PBD as hole block layer above the light-emitting layer were fabricated using conventional spin-casting and vaccum vapour deposition methods. The introduction of PBD has enhanced electron injection and luminance efficiency, compared with the single layer LEDs.

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中图分类号:TN31

基金项目:supported by the National "863" project [863-307-05-05(02)], National Natural Science foundation(69637010).

收稿日期:1998-01-05

修改稿日期:1998-01-20

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作者单位    点击查看

XIE Zhiyuan:National Lab. of Integrated Optoelectron., Jinn University, Changchun 130023, CHN
HUANG Jingsong:National Lab. of Integrated Optoelectron., Jinn University, Changchun 130023, CHN
CHEN Baijun:National Lab. of Integrated Optoelectron., Jinn University, Changchun 130023, CHN
HOU Jingying:National Lab. of Integrated Optoelectron., Jinn University, Changchun 130023, CHN
LIU Shiyong:National Lab. of Integrated Optoelectron., Jinn University, Changchun 130023, CHN
LI Dongfeng:Dept.of Light Chem.and Text. Eng., Jilin Institute of Technology, Changchun 130012, CHN

引用该论文

XIE Zhiyuan,HUANG Jingsong,CHEN Baijun,HOU Jingying,LIU Shiyong,LI Dongfeng. Bright Blue Light-emitting Diodes Based on a Novel Fluorescent Dye Containing Heterocyclic Groups[J]. Semiconductor Photonics and Technology, 1998, 4(2): 109-112

XIE Zhiyuan,HUANG Jingsong,CHEN Baijun,HOU Jingying,LIU Shiyong,LI Dongfeng. Bright Blue Light-emitting Diodes Based on a Novel Fluorescent Dye Containing Heterocyclic Groups[J]. 半导体光子学与技术, 1998, 4(2): 109-112

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