A chemical failure mechanism for aluminum(III) 8-hydroxyquinoline light-emitting devices

被引：191

作者：

Papadimitrakopoulos, F

Zhang, XM

Thomsen, DL

Higginson, KA

机构：

[1] Department of Chemistry, Institute of Materials Science, University of Connecticut, Storrs

来源：

CHEMISTRY OF MATERIALS | 1996年 / 8卷 / 07期

关键词：

D O I：

10.1021/cm960152m

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 plausible degradation mechanism of aluminum(III) 8-hydroxyquinoline (Alq(3))-based devices is presented. This is initiated by traces of moisture that facilitate a ligand exchange with the oxyquinoline moiety of Alq(3), followed by a condensation polymerization of the freed 8-hydroxyquinoline (8-Hq) to produce a deep brown, nonemissive polymeric material and water (which can in turn free more 8-Hq). The polymer was found to be an efficient photoluminescence and electroluminescence quencher due to the introduction of nonemissive midgap states within the Alq(3) HOMO/LUMO levels.

引用

页码：1363 / &

页数：4

共 24 条

[1] TEMPERATURE-DEPENDENCE IN EMISSION CHARACTERISTICS OF AN ORGANIC EL-CELL WITH 8-HYDROXYQUINOLINE ALUMINUM EMITTING LAYER
ABE, Y
ONISAWA, K
ARATANI, S
HANAZONO, M
[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1992, 139 (03) : 641 - 643
[2] ORGANIC ELECTROLUMINESCENT DEVICE HAVING A HOLE CONDUCTOR AS AN EMITTING LAYER
ADACHI, C
TSUTSUI, T
SAITO, S
[J]. APPLIED PHYSICS LETTERS, 1989, 55 (15) : 1489 - 1491
[3] ARENE OXIDES OF QUINOLINE - EPOXIDATION, N-OXIDATION AND N-METHYLATION REACTIONS
BOYD, DR
DAVIES, RJH
HAMILTON, L
MCCULLOUGH, JJ
PORTER, HP
[J]. JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 1, 1991, (09): : 2189 - 2192
[4] RELIABILITY AND DEGRADATION OF ORGANIC LIGHT-EMITTING DEVICES
BURROWS, PE
BULOVIC, V
FORREST, SR
SAPOCHAK, LS
MCCARTY, DM
THOMPSON, ME
[J]. APPLIED PHYSICS LETTERS, 1994, 65 (23) : 2922 - 2924
[5] DALVI VJ, 1951, J INDIAN CHEM SOC, V28, P366
[6] COLOR VARIATION WITH ELECTROLUMINESCENT ORGANIC SEMICONDUCTORS IN MULTIMODE RESONANT CAVITIES
DODABALAPUR, A
ROTHBERG, LJ
MILLER, TM
[J]. APPLIED PHYSICS LETTERS, 1994, 65 (18) : 2308 - 2310
[7] FLUORESCENCE ENHANCEMENT OF ALUMINUM(III) 8-QUINOLINOLATE IN THE PRESENCE OF 3,5-DICHLOROPHENOL
KATSUTA, S
[J]. CHEMISTRY LETTERS, 1994, (07) : 1239 - 1242
[8] MULTILAYER WHITE LIGHT-EMITTING ORGANIC ELECTROLUMINESCENT DEVICE
KIDO, J
KIMURA, M
NAGAI, K
[J]. SCIENCE, 1995, 267 (5202) : 1332 - 1334
[9] CRYSTAL AND MOLECULAR STRUCTURE OF BIS(2-METHYL-8-QUINOLINOLATO)ALUMINUM(III)-MU-OXO-BIS(2-METHYL-8-QUINOLINOLATO)ALUMINUM(III)
KUSHI, Y
FERNANDO, Q
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1970, 92 (01) : 91 - &
[10] PAPADIMITRAKOPO.F, IN PRESS MACROMOLECU

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