Chemical and morphological stability of aluminum tris(8-hydroxyquinoline) (Alq3):: Effects in light-emitting devices

被引：75

作者：

Papadimitrakopoulos, F ^{[1
]}

Zhang, XM

Higginson, KA

机构：

[1] Univ Connecticut, Inst Mat Sci, Polymer Sci Program, Dept Chem, Storrs, CT 06269 USA

[2] Wesleyan Univ, Dept Chem, Middletown, CT 06459 USA

来源：

IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS | 1998年 / 4卷 / 01期

关键词：

Alq(3); moisture; morphology; organic light-emitting diodes; stability;

D O I：

10.1109/2944.669465

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Aluminum tris(8-hydroxyquinoline) (Alq(3)) is presently considered one of the most reliable electron transporting and emitting materials for molecular-based organic light-emitting diodes (OLED's), This paper summarizes the investigations that our group, over the past three years, have conducted into the physical and chemical response of Alq(3) in the presence of small amounts of moisture. The characteristic evolution of 8-hydroxyquinoline (8-Hq), a volatile byproduct of the hydrolysis of Alq(3), was quantified using thermogravimetric and gas chromatography/mass spectroscopy (GC/MS) analysis as a function of sample morphology, Annealed (more crystalline) samples exhibited greater stability to hydrolysis than freshly sublimed films, at the expense of photoluminescence (PL) efficiency, These phenomena are discussed with respect to failure mechanisms observed in Alq(3)-based OLED's.

引用

页码：49 / 57

页数：9

共 41 条

[1] MOLECULAR DESIGN OF HOLE TRANSPORT MATERIALS FOR OBTAINING HIGH DURABILITY IN ORGANIC ELECTROLUMINESCENT DIODES
ADACHI, C
NAGAI, K
TAMOTO, N
[J]. APPLIED PHYSICS LETTERS, 1995, 66 (20) : 2679 - 2681
[2] ANTONIADIS H, 1997, ACS POLYM PREPRINTS, V38, P382
[3] Electroluminescent polymers: Materials, physics and device engineering
Bradley, D
[J]. CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE, 1996, 1 (06) : 789 - 797
[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] Prospects and applications for organic light-emitting devices
Burrows, PE
Forrest, SR
Thompson, ME
[J]. CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE, 1997, 2 (02) : 236 - 243
[6] CHADHA SS, 1993, SOLID STATE LUMINESC, P159
[7] Morphological change in the degradation of A1 electrode surfaces of electroluminescent devices by fluorescence microscopy and AFM
Do, LM
Oyamada, M
Koike, A
Han, EM
Yamamoto, N
Fujihira, M
[J]. THIN SOLID FILMS, 1996, 273 (1-2) : 209 - 213
[8] OBSERVATION OF DEGRADATION PROCESSES OF AL ELECTRODES IN ORGANIC ELECTROLUMINESCENCE DEVICES BY ELECTROLUMINESCENCE MICROSCOPY, ATOMIC FARCE MICROSCOPY, SCANNING ELECTRON-MICROSCOPY, AND ANGER ELECTRON-SPECTROSCOPY
DO, LM
HAN, EM
NIIDOME, Y
FUJIHIRA, M
KANNO, T
YOSHIDA, S
MAEDA, A
IKUSHIMA, AJ
[J]. JOURNAL OF APPLIED PHYSICS, 1994, 76 (09) : 5118 - 5121
[9] 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
[10] ORGANIC TRANSISTORS - 2-DIMENSIONAL TRANSPORT AND IMPROVED ELECTRICAL CHARACTERISTICS
DODABALAPUR, A
TORSI, L
KATZ, HE
[J]. SCIENCE, 1995, 268 (5208) : 270 - 271

← 1 2 3 4 5 →