High quantum efficiency in simple blue phosphorescent organic light-emitting diodes without any electron injection layer

被引：37

作者：

Jang, Sang Eok ^{[1
]}

Joo, Chul Woong ^{[1
]}

Lee, Jun Yeob ^{[1
]}

机构：

[1] Dankook Univ, Dept Polymer Sci & Engn, Yongin 448701, Gyeonggi Do, South Korea

来源：

THIN SOLID FILMS | 2010年 / 519卷 / 02期

关键词：

Blue phosphorescent organic light-emitting diodes; Electron injection layer; High efficiency; Spirobifluorene phosphine oxide;

D O I：

10.1016/j.tsf.2010.08.143

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

High efficiency simple blue phosphorescent organic light-emitting diodes (PHOLEDs) without any electron injection layer were developed using a spirobifluorene-based phosphine oxide (SPPO13) as a host material in the emitting layer A high quantum efficiency of 20 3% was obtained from the SPPO13 device with a common device structure and quantum efficiency of 19% achieved in the simple blue device without any LiF electron injection layer Efficient electron injection from the Al cathode to the SPPO13 without any electron injection layer was responsible for the high quantum efficiency in the blue PHOLEDs (C) 2010 Elsevier B V All nghts reserved

引用

页码：906 / 910

页数：5

共 14 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] Quantum-chemical design of host materials for full-color triplet emission [J].

Avilov, I ;

Marsal, P ;

Brédas, JL ;

Beljonne, D .

ADVANCED MATERIALS, 2004, 16 (18) :1624-+

[3] Ultraviolet electroluminescence and blue-green phosphorescence using an organic diphosphine oxide charge transporting layer [J].

Burrows, PE ;

Padmaperuma, AB ;

Sapochak, LS ;

Djurovich, P ;

Thompson, ME .

APPLIED PHYSICS LETTERS, 2006, 88 (18)

[4] Carrier trapping and efficient recombination of electrophosphorescent device with stepwise doping profile [J].

Chin, BD ;

Suh, MC ;

Kim, MH ;

Lee, ST ;

Kim, HD ;

Chung, HK .

APPLIED PHYSICS LETTERS, 2005, 86 (13) :1-3

[5] Simple high efficiency red phosphorescent organic light-emitting diodes without LiF electron injection layer [J].

Jeon, Soon Ok ;

Yook, Kyoung Soo ;

Joo, Chul Woong ;

Lee, Jun Yeob .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2009, 42 (22)

[6] High efficiency blue phosphorescent organic light emitting diodes using a simple device structure [J].

Jeon, Soon Ok ;

Yook, Kyoung Soo ;

Joo, Chul Woong ;

Lee, Jun Yeob .

APPLIED PHYSICS LETTERS, 2009, 94 (01)

[7]

Jeong KU, 2001, J APPL POLYM SCI, V80, P1198, DOI 10.1002/app.1204.abs

[8] Red phosphorescent organic light-emitting diodes with indium tin oxide/single organic layer/Al simple device structure [J].

Joo, Chul Woong ;

Jeon, Soon Ok ;

Yook, Kyoung Soo ;

Lee, Jun Yeob .

ORGANIC ELECTRONICS, 2010, 11 (01) :36-40

[9] Highly efficient solution processed blue organic electrophosphorescence with 14 lm/W luminous efficacy [J].

Mathai, MK ;

Choong, VE ;

Choulis, SA ;

Krummacher, B ;

So, F .

APPLIED PHYSICS LETTERS, 2006, 88 (24)

[10] Efficient electrophosphorescent polymer light-emitting devices using a Cs/Al cathode [J].

Nakamura, A ;

Tada, T ;

Mizukami, M ;

Yagyu, S .

APPLIED PHYSICS LETTERS, 2004, 84 (01) :130-132

← 1 2 →