On the improvement of the electroluminescent signal of organic light emitting diodes by the presence of an ultra-thin metal layer at the interface organic/ITO

被引：5

作者：

Bernede, J. C. ^{[1
]}

Martinez, F. ^{[2
]}

Neculqueo, G. ^{[2
]}

Cattin, L. ^{[1
]}

机构：

[1] Univ Nantes, Nantes Altant Univ, LAMP,EA 3825, Fac Sci & Tech, F-44000 Nantes, France

[2] Univ Chile, Dpto Ciencia Mat, Fac Ciencias Fis & Matemat, Santiago, Chile

来源：

PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS | 2008年 / 2卷 / 01期

关键词：

D O I：

10.1002/pssr.200701217

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The electroluminescent (EL) signal of organic light emitting diodes (OLEDs) based on simple "hole transporting layer/electron transporting layer" (HTL/ETL) structures has been studied as a function of the anode/HTL interface, the anode being an indium tin oxide (ITO) film. It is shown that the electroluminescent (EL) signal increases when a metal ultra-thin layer is introduced between the anode and the HTL. Experimental results show that the work function value of the metal is only one of the factors which allow improving the EL signal via better hole injection efficiency. (C) 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：10 / 12

页数：3

共 13 条

[1] Optimization of the properties of bulk heterojunctions obtained by coevaporation of Zn-phthalocyanine/perylene [J].

Derouiche, H ;

Bernède, JC ;

L'Hyver, J .

DYES AND PIGMENTS, 2004, 63 (03) :277-289

[2] High-efficiency low operation voltage organic light-emitting diodes [J].

Di, Chong-an ;

Yu, Gui ;

Liu, Yunqi ;

Xu, Xinjun ;

Song, Yabin ;

Zhu, Daoben .

APPLIED PHYSICS LETTERS, 2007, 90 (13)

[3]

Djobo SO, 2004, J MATER SCI-MATER EL, V15, P579

[4] Covalently bound hole-injecting nanostructures. Systematics of molecular architecture, thickness, saturation, and electron-blocking characteristics on organic light-emitting diode luminance, turn-on voltage, and quantum efficiency [J].

Huang, QL ;

Evmenenko, GA ;

Dutta, P ;

Lee, P ;

Armstrong, NR ;

Marks, TJ .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (29) :10227-10242

[5] Recent progress of molecular organic electroluminescent materials and devices [J].

Hung, LS ;

Chen, CH .

MATERIALS SCIENCE & ENGINEERING R-REPORTS, 2002, 39 (5-6) :143-222

[6] A strong regioregularity effect in self-organizing conjugated polymer films and high-efficiency polythiophene: fullerene solar cells [J].

Kim, Y ;

Cook, S ;

Tuladhar, SM ;

Choulis, SA ;

Nelson, J ;

Durrant, JR ;

Bradley, DDC ;

Giles, M ;

Mcculloch, I ;

Ha, CS ;

Ree, M .

NATURE MATERIALS, 2006, 5 (03) :197-203

[7] Electronic and chemical structure of conjugated polymer surfaces and interfaces: applications in polymer-based light-emitting devices [J].

Kugler, T ;

Johansson, A ;

Dalsegg, I ;

Gelius, U ;

Salaneck, WR .

SYNTHETIC METALS, 1997, 91 (1-3) :143-146

[8] High-efficiency solution processable polymer photovoltaic cells by self-organization of polymer blends [J].

Li, G ;

Shrotriya, V ;

Huang, JS ;

Yao, Y ;

Moriarty, T ;

Emery, K ;

Yang, Y .

NATURE MATERIALS, 2005, 4 (11) :864-868

[9] Comparative study of metal or oxide capped indium-tin oxide anodes for organic light-emitting diodes [J].

Qiu, CF ;

Xie, ZL ;

Chen, HY ;

Wong, M ;

Kwok, HS .

JOURNAL OF APPLIED PHYSICS, 2003, 93 (06) :3253-3258

[10] CuPc buffer layer role in OLED performance: a study of the interfacial band energies [J].

Tadayyon, SM ;

Grandin, HM ;

Griffiths, K ;

Norton, PR ;

Aziz, H ;

Popovic, ZD .

ORGANIC ELECTRONICS, 2004, 5 (04) :157-166

← 1 2 →