Diffusion study of multi-organic layers in OLEDs by ToF-SIMS

被引：14

作者：

Chen, Wen-Yin ^{[1
]}

Ling, Yong-Chien ^{[1
]}

Chen, Bo-Jung ^{[1
]}

Shih, Hung-Hsin ^{[1
]}

Cheng, Chien-Hong ^{[1
]}

机构：

[1] Natl Tsing Hua Univ, Dept Chem, Hsinchu 30013, Taiwan

来源：

APPLIED SURFACE SCIENCE | 2006年 / 252卷 / 19期

关键词：

OLEDs; diffusion; interface; heat treatment; ToF-SIMS; LIGHT-EMITTING DEVICES; INTERFACE;

D O I：

10.1016/j.apsusc.2006.02.228

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A model organic light-emitting diodes (OLEDs) with structure of tris(8-hydroxyquinoline) aluminum (Alq(3))/N,N'-diphenyl-N,N'-bis[1-naphthy-(1,1'-diphenyl)]-4,4'-diamine (N-PB)/indium tin oxide (ITO)-coated glass was fabricated for diffusion study by ToF-SIMS. The results demonstrate that ToF-SIMS is capable of delineating the structure of multi-organic layers in OLEDs and providing specific molecular information to aid deciphering the diffusion phenomena. Upon heat treatment, the solidity or hardness of the device was reduced. Complicated chemical reaction might occur at the NPB/ITO interface and results in the formation of a buffer layer, which terminates the upper diffusion of ions from underlying ITO. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：6594 / 6596

页数：3

共 7 条

[1] Degradation mechanism of small molecule-based organic light-emitting devices [J].

Aziz, H ;

Popovic, ZD ;

Hu, NX ;

Hor, AM ;

Xu, G .

SCIENCE, 1999, 283 (5409) :1900-1902

[2] Degradation phenomena in small-molecule organic light-emitting devices [J].

Aziz, H ;

Popovic, ZD .

CHEMISTRY OF MATERIALS, 2004, 16 (23) :4522-4532

[3] Chemical structure of aluminum/8-hydroxyquinoline aluminum interface [J].

Isomura, N ;

Mitsuoka, T ;

Ohwaki, T ;

Taga, Y .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 2000, 39 (4A) :L312-L314

[4] Analysis of dark spots growing in organic EL devices by time-of-flight secondary ion mass spectrometry [J].

Murase, A ;

Ishii, M ;

Tokito, S ;

Taga, Y .

ANALYTICAL CHEMISTRY, 2001, 73 (10) :2245-2253

[5] Organic electroluminescent devices [J].

Sheats, JR ;

Antoniadis, H ;

Hueschen, M ;

Leonard, W ;

Miller, J ;

Moon, R ;

Roitman, D ;

Stocking, A .

SCIENCE, 1996, 273 (5277) :884-888

[6] Study of lithium fluoride/tris(8-hydroxyquinolino)-aluminum interfacial chemistry using XPS and ToF-SIMS [J].

Song, WJ ;

So, SK ;

Wong, KW ;

Choi, WK ;

Cao, LL .

APPLIED SURFACE SCIENCE, 2004, 228 (1-4) :373-377

[7] Dynamic SIMS characterization of interface structure of Ag/Alq3/NPB/ITO model devices [J].

Song, WJ ;

Li, ZP ;

So, SK ;

Qiu, Y ;

Zhu, YF ;

Cao, LL .

SURFACE AND INTERFACE ANALYSIS, 2001, 32 (01) :102-105

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