Bright blue organic light-emitting diode with improved color purity using a LiF/Al cathode

被引：279

作者：

Shaheen, SE ^{[1
]}

Jabbour, GE

Morrell, MM

Kawabe, Y

Kippelen, B

Peyghambarian, N

Nabor, MF

Schlaf, R

Mash, EA

Armstrong, NR

机构：

[1] Univ Arizona, Ctr Opt Sci, Tucson, AZ 85721 USA

[2] Univ Arizona, Dept Chem, Tucson, AZ 85721 USA

来源：

JOURNAL OF APPLIED PHYSICS | 1998年 / 84卷 / 04期

关键词：

D O I：

10.1063/1.368299

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report a two-layer, blue organic light-emitting diode with a 4,4'-bis(2,2-diphenylvinyl)-1,1'-biphenyl emission layer and a LiF/Al cathode which has an external quantum efficiency of 1.4% and a maximum luminance of 3000 cd/m(2). Insertion of the thin LiF layer results in a 50-fold increase in the device efficiency compared to a device with an aluminum only cathode, and eliminates the need for an electron-transporting layer, such as tris(8-hydroxyquinoline)aluminum. This results in a device with excellent color purity with an emission peak at 476 nm and a full width at half maximum of 78 nm. Using ultraviolet photoelectron spectroscopy, we find that the effective work-function of aluminum decreases dramatically with sub-monolayer amounts of LiF deposited on the surface. (C) 1998 American Institute of Physics. [S0021-8979(98)05816-2].

引用

页码：2324 / 2327

页数：4

共 26 条

[1] BLUE LIGHT-EMITTING ORGANIC ELECTROLUMINESCENT DEVICES
ADACHI, C
TSUTSUI, T
SAITO, S
[J]. APPLIED PHYSICS LETTERS, 1990, 56 (09) : 799 - 801
[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] Controlling charge injection in organic electronic devices using self-assembled monolayers
Campbell, IH
Kress, JD
Martin, RL
Smith, DL
Barashkov, NN
Ferraris, JP
[J]. APPLIED PHYSICS LETTERS, 1997, 71 (24) : 3528 - 3530
[4] ELECTRIC-FIELD-INDUCED PHOTOLUMINESCENCE QUENCHING IN THIN-FILM LIGHT-EMITTING-DIODES BASED ON POLY(PHENYL-P-PHENYLENE VINYLENE)
DEUSSEN, M
SCHEIDLER, M
BASSLER, H
[J]. SYNTHETIC METALS, 1995, 73 (02) : 123 - 129
[5] PHOTOLUMINESCENCE QUENCHING UNDER REVERSE BIAS IN ORGANIC MULTILAYER STRUCTURE UTILIZING 8-HYDROXYQUINOLINE ALUMINUM AND AROMATIC DIAMINE
FUJII, A
OHMORI, Y
MORISHIMA, C
YOSHINO, K
[J]. JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1994, 33 (3A): : L348 - L350
[6] White-light-emitting material for organic electroluminescent devices
Hamada, Y
Sang, T
Fujii, H
Nishio, Y
Takanashi, H
Shibata, K
[J]. JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1996, 35 (10B): : L1339 - L1341
[7] BLUE ELECTROLUMINESCENCE IN THIN-FILMS OF AZOMETHIN-ZINC COMPLEXES
HAMADA, Y
SANO, T
FUJITA, M
FUJII, T
NISHIO, Y
SHIBATA, K
[J]. JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1993, 32 (4A): : L511 - L513
[8] BLUE-LIGHT-EMITTING ORGANIC ELECTROLUMINESCENT DEVICES WITH OXADIAZOLE DIMER DYES AS AN EMITTER
HAMADA, Y
ADACHI, C
TSUTSUI, T
SAITO, S
[J]. JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1992, 31 (6A): : 1812 - 1816
[9] Lithium-aluminum contacts for organic light-emitting devices
Haskal, EI
Curioni, A
Seidler, PF
Andreoni, W
[J]. APPLIED PHYSICS LETTERS, 1997, 71 (09) : 1151 - 1153
[10] Highly efficient blue electroluminescence from a distyrylarylene emitting layer with a new dopant
Hosokawa, C
Higashi, H
Nakamura, H
Kusumoto, T
[J]. APPLIED PHYSICS LETTERS, 1995, 67 (26) : 3853 - 3855

← 1 2 3 →