Blue light emitting diode with 1,1,4,4-tetraphenyl-1,3-butadiene (TPB)

被引：22

作者：

Kim, JH

Noh, S

Kim, K

Lim, ST

Shin, DM

机构：

[1] Hongik Univ, Dept Chem Engn, Mapo Gu, Seoul 121791, South Korea

[2] Hongik Univ, Dept Mech Engn, Mapo Gu, Seoul 121791, South Korea

来源：

SYNTHETIC METALS | 2001年 / 117卷 / 1-3期

基金：

新加坡国家研究基金会;

关键词：

electroluminescence; blue; FWHM; PVK; TPB; TPA;

D O I：

10.1016/S0379-6779(00)00370-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Blue electroluminescence (EL) devices with the structure ITO/poly(N-vinylcarbazole) (PVK):1,1,4.4-tetraphenyl-1,3-butadiene (TPB):triphenylamine (TPA)/A1 have been studied. PVK doped with TPB was used for hole transport layer (HTL) and emitting layer (EML). The triphenylamine contributed to the small band width of blue emission. TPB is known as a blue-emitting material. In addition, the wavelength of blue emission observed from PVK:TPB (3 mol%) is almost 450 nm, which is the recommended blue emission wavelength. In this work, a TPA doping effect on full-width at half maximum (FWHM) observed from TPB:TPA-doped PVK devices is demonstrated. To investigate the role of TPB at the ITO/PVK:TPB:TPA layer interface, the morphology of the PVK:TPB:TPA layer on ITO was studied with atomic force microscopy (AFM). (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：227 / 228

页数：2

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