An organic electrophosphorescent device driven by all-organic thin-film transistor using photoacryl as a gate insulator

被引:15
作者
Pyo, SW [1 ]
Kim, YM
Kim, JH
Shim, JH
Jung, LY
Kim, YK
机构
[1] Hongik Univ, Dept Elect Informat & Control Engn, Seoul 121791, South Korea
[2] Hongik Univ, Sci & Technol Res Inst, Seoul 121791, South Korea
[3] Hongik Univ, Dept Chem Engn, Seoul 121791, South Korea
基金
新加坡国家研究基金会;
关键词
semiconductor devices; optoelectronic devices; display systems; vacuum microelectronic device characterization design and modeling;
D O I
10.1016/S1567-1739(02)00096-2
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Organic electrophosphorescent devices have been intensively investigated for using in full-color flat-panel display. Since the quantum efficiency of electrophosphorescent device decreases rapidly as the luminance increases, it is desirable to operate the electrophosphorescent display with active matrix rather than passive matrix. Here we report the study of driving electrophosphorescent diode with all-organic TFT. We obtained the maximum power luminance that was obtained about 90 cd/m(2). Turn-on voltage is approximately 10 V. Field effect mobility, threshold voltage, and on-off current ratio in 0.5-mum thick gate dielectric layer were 0.13 cm(2)/V s, -7 V, and 10(6) A/A. The structure of electrophosphorescent diode is ITO/TPD/BCP:Ir(PPY)(3)/BCP/Alq(3)/Li:Al/Al. In organic TFT, photoacryl is used as an insulator and pentacene as an active layer. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:417 / 419
页数:3
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