Electrode modification and interface engineering in organic light-emitting diodes

被引：14

作者：

Hung, LS ^{[1
]}

Lee, ST

机构：

[1] City Univ Hong Kong, COSDAF, Hong Kong, Hong Kong, Peoples R China

[2] City Univ Hong Kong, Dept Phys & Mat Sci, Hong Kong, Hong Kong, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 2001年 / 85卷 / 2-3期

关键词：

electrode modification; interface engineering; organic light-emitting diodes;

D O I：

10.1016/S0921-5107(01)00539-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

It is well known that the use of a cathode consisting of a thin LiF layer and a thick Al overlayer (similar to 100 mn) produces an excellent electron-injecting contact for organic light-emitting diodes (OLEDs). We report in this paper that the contact is formed as a result of the chemical reaction involving LiF, Al, and Alq, and the reacted layer is of the order of 1 mn or less. The shallow contact nature allows for a much greater flexibility in the design of cathode structures and extending its applications to various device configurations. By using the shallow contact, an ITO-free surface emitting OLED was prepared and shown to have superior electrical and optical characteristics. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：104 / 108

页数：5

共 20 条

[1] Investigation of the interface formation between calcium and tris-(8-hydroxy quinoline) aluminum [J].

Choong, VE ;

Mason, MG ;

Tang, CW ;

Gao, YG .

APPLIED PHYSICS LETTERS, 1998, 72 (21) :2689-2691

[2] Transparent organic light emitting devices [J].

Gu, G ;

Bulovic, V ;

Burrows, PE ;

Forrest, SR ;

Thompson, ME .

APPLIED PHYSICS LETTERS, 1996, 68 (19) :2606-2608

[3] Application of an ultrathin LiF/Al bilayer in organic surface-emitting diodes [J].

Hung, LS ;

Tang, CW ;

Mason, MG ;

Raychaudhuri, P ;

Madathil, J .

APPLIED PHYSICS LETTERS, 2001, 78 (04) :544-546

[4] Enhanced electron injection in organic electroluminescence devices using an Al/LiF electrode [J].

Hung, LS ;

Tang, CW ;

Mason, MG .

APPLIED PHYSICS LETTERS, 1997, 70 (02) :152-154

[5] Interface engineering in preparation of organic surface-emitting diodes [J].

Hung, LS ;

Tang, CW .

APPLIED PHYSICS LETTERS, 1999, 74 (21) :3209-3211

[6] Sputter deposition of cathodes in organic light emitting diodes [J].

Hung, LS ;

Liao, LS ;

Lee, CS ;

Lee, ST .

JOURNAL OF APPLIED PHYSICS, 1999, 86 (08) :4607-4612

[7] Aluminum based cathode structure for enhanced electron injection in electroluminescent organic devices [J].

Jabbour, GE ;

Kippelen, B ;

Armstrong, NR ;

Peyghambarian, N .

APPLIED PHYSICS LETTERS, 1998, 73 (09) :1185-1187

[8] Highly efficient and bright organic electroluminescent devices with an aluminum cathode [J].

Jabbour, GE ;

Kawabe, Y ;

Shaheen, SE ;

Wang, JF ;

Morrell, MM ;

Kippelen, B ;

Peyghambarian, N .

APPLIED PHYSICS LETTERS, 1997, 71 (13) :1762-1764

[9] ELECTRON AND HOLE MOBILITY IN TRIS(8-HYDROXYQUINALINOLATO-N1,O8) ALUMINUM [J].

KEPLER, RG ;

BEESON, PM ;

JACOBS, SJ ;

ANDERSON, RA ;

SINCLAIR, MB ;

VALENCIA, VS ;

CAHILL, PA .

APPLIED PHYSICS LETTERS, 1995, 66 (26) :3618-3620

[10] Ion-beam-induced surface damages on tris-(8-hydroxyquinoline) aluminum [J].

Liao, LS ;

Hung, LS ;

Chan, WC ;

Ding, XM ;

Sham, TK ;

Bello, I ;

Lee, CS ;

Lee, ST .

APPLIED PHYSICS LETTERS, 1999, 75 (11) :1619-1621

← 1 2 →