Efficient electron transport in 4,4'-bis[N-(1-napthyl)-N-phenyl-amino] biphenyl and the applications in white organic light emitting devices

被引：9

作者：

Lou, Yannhui ^{[1
,3
]}

Okawa, Yuta ^{[3
]}

Wang, Zhaokui ^{[2
,3
]}

Naka, Shigeki ^{[3
]}

Okada, Hiroyuki ^{[3
]}

机构：

[1] Soochow Univ, Sch Energy, Suzhou 215006, Jiangsu, Peoples R China

[2] Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Suzhou 215123, Jiangsu, Peoples R China

[3] Toyama Univ, Fac Engn, Toyama 9308555, Japan

来源：

ORGANIC ELECTRONICS | 2013年 / 14卷 / 03期

基金：

日本学术振兴会;

关键词：

Ambipolar transport properties; Displacement current measurement; White OLEDs; MIXED SINGLE-LAYER; HETEROJUNCTION SOLAR-CELLS; ELECTROLUMINESCENT DEVICES; CARRIER TRANSPORT; CHARGE-TRANSPORT; HOLE TRANSPORT; N-TYPE; DIODES; TRANSISTORS; SEMICONDUCTORS;

D O I：

10.1016/j.orgel.2013.01.029

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The electron transport capability of 4,4'-bis[ N-(1-napthyl)-N-phenyl-amino] biphenyl (alpha-NPD) was investigated by fundamental physical measurements named as current-voltage (I-V) electrical property evaluation and displacement current measurement (DCM). In electron-dominated devices, the I-V characteristics of alpha-NPD were similar as that of (8-hydroxyquinolino) aluminum (Alq(3)) owing to their same order of electron mobilities. The interface of Al/LiF and alpha-NPD was proven to be an Ohmic contact through the evaluation of I-V characteristics at low bias regime (<3 V). And an electron injection barrier, 0.21 eV, at Al/LiF/alpha-NPD was obtained by extrapolating the temperature dependent I-V curves. The electron transport behavior in alpha-NPD film was further confirmed by DCM evaluations. Furthermore, an efficient white organic light emission device was successfully fabricated by using alpha-NPD as hole transport layer and electron transport layer, respectively. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：1015 / 1020

页数：6

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