Effect of electron injection and transport materials on efficiency of deep-blue phosphorescent organic light-emitting devices

被引：59

作者：

Eom, Sang-Hyun ^{[1
]}

Zheng, Ying ^{[1
]}

Wrzesniewski, Edward ^{[1
]}

Lee, Jaewon ^{[1
]}

Chopra, Neetu ^{[1
]}

So, Franky ^{[1
]}

Xue, Jiangeng ^{[1
]}

机构：

[1] Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32611 USA

来源：

ORGANIC ELECTRONICS | 2009年 / 10卷 / 04期

关键词：

Deep-blue phosphorescent organic light-emitting devices (PHOLEDs); Electron transport materials; Alkaline doping; p-i-n; Dual-emissive-layer (D-EML); ENERGY-TRANSFER; TRIPLET ENERGY; EMISSION; ELECTROPHOSPHORESCENCE; DIODES; LAYERS;

D O I：

10.1016/j.orgel.2009.03.002

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigate the performance of FIr6-based deep-blue phosphorescent organic light-emitting devices (PHOLEDs) with three different electron transport materials, bathocuproine (BCP), 4,7-diphenyl-1,10-phenanthroline (BPhen), and tris[3-(3-pyridyl)mesityl]borane (3TPYMB), and study the effect of doping alkaline metals (Li and Cs) into these charge transport materials. External quantum efficiency (eta(EQE)) of (20 +/- 1)% and peak power efficiency (eta(p)) of (36 +/- 2) Im/W were achieved maintaining Commission Internationale de L'Eclairage (CIE) coordinates of (x = 0.16, y = 0.28) in p-i-n dual-emissive-layer (D-EML) deep-blue PHOLEDs with 3TPYMB as the electron transport material and 3TPYMB:Cs as the electron injection layer. The high efficiencies are attributed to the high triplet energy of 3TPYMB as well as the increased conductivity of 3TPYMB:Cs. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：686 / 691

页数：6

共 30 条

[1] Nearly 100% internal phosphorescence efficiency in an organic light-emitting device [J].

Adachi, C ;

Baldo, MA ;

Thompson, ME ;

Forrest, SR .

JOURNAL OF APPLIED PHYSICS, 2001, 90 (10) :5048-5051

[2] Highly efficient phosphorescent emission from organic electroluminescent devices [J].

Baldo, MA ;

O'Brien, DF ;

You, Y ;

Shoustikov, A ;

Sibley, S ;

Thompson, ME ;

Forrest, SR .

NATURE, 1998, 395 (6698) :151-154

[3] Transient analysis of organic electrophosphorescence: I. Transient analysis of triplet energy transfer [J].

Baldo, MA ;

Forrest, SR .

PHYSICAL REVIEW B, 2000, 62 (16) :10958-10966

[4] HOLE TRANSPORT IN 1,1-BIS(DI-4-TOLYLAMINOPHENYL)CYCLOHEXANE [J].

BORSENBERGER, PM ;

PAUTMEIER, L ;

RICHERT, R ;

BASSLER, H .

JOURNAL OF CHEMICAL PHYSICS, 1991, 94 (12) :8276-8281

[5] Efficient organic photovoltaic devices using a combination of exciton blocking layer and anodic buffer layer [J].

Chan, M. Y. ;

Lee, C. S. ;

Lai, S. L. ;

Fung, M. K. ;

Wong, F. L. ;

Sun, H. Y. ;

Lau, K. M. ;

Lee, S. T. .

JOURNAL OF APPLIED PHYSICS, 2006, 100 (09)

[6] High efficiency blue phosphorescent organic light-emitting device [J].

Chopra, Neetu ;

Lee, Jaewon ;

Zheng, Ying ;

Eom, Sang-Hyun ;

Xue, Jiangeng ;

So, Franky .

APPLIED PHYSICS LETTERS, 2008, 93 (14)

[7] White organic light-emitting devices for solid-state lighting [J].

D'Andrade, BW ;

Forrest, SR .

ADVANCED MATERIALS, 2004, 16 (18) :1585-1595

[8] Low voltage and very high efficiency deep-blue phosphorescent organic light-emitting devices [J].

Eom, Sang-Hyun ;

Zheng, Ying ;

Chopra, Neetu ;

Lee, Jaewon ;

So, Franky ;

Xue, Jiangeng .

APPLIED PHYSICS LETTERS, 2008, 93 (13)

[9] The path to ubiquitous and low-cost organic electronic appliances on plastic [J].

Forrest, SR .

NATURE, 2004, 428 (6986) :911-918

[10] Measuring the efficiency of organic light-emitting devices [J].

Forrest, SR ;

Bradley, DDC ;

Thompson, ME .

ADVANCED MATERIALS, 2003, 15 (13) :1043-1048

← 1 2 3 →