High-efficiency electrophosphorescent white organic light-emitting devices with a double-doped emissive layer

被引：21

作者：

Xie, WF ^{[1
]}

Zhao, Y ^{[1
]}

Li, CN ^{[1
]}

Liu, SY ^{[1
]}

机构：

[1] Jilin Univ, Natl Lab Integrated Optoelect, Changchun 130012, Peoples R China

来源：

SEMICONDUCTOR SCIENCE AND TECHNOLOGY | 2005年 / 20卷 / 03期

关键词：

D O I：

10.1088/0268-1242/20/3/013

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：

Efficient white emission with mixing of red emission from bis (1-(phenyl)isoquinoline) iridium (IIII) acetylanetonate [Ir(piq)(2)(acac)], green emission from fac (2-phenylpyridine) iridium [Ir(ppy)(3)], and blue emission from N, N'-bis-(1-naphthyl)-N, N'diphenyl-1, 1'biphenyl-4, 4'diamine (NPB) is reported. Ir(piq)(2)(acac) and Ir(ppy)(3) are codoped into a 2,2',2 ''-(],3,5-phenylene) tris (1-phenyl-1H-benzimidazole) (TPBI) host. The device emission colour is controlled by varying dopant concentrations. The maximum luminance and power efficiency of the devices with the doping concentrations of 4 wt% Ir(ppy)(3) and 2 wt% Ir(piq)(2)(acac) in TPBI are 33 000 cd m(-2) and 10.7 lm W-1, respectively. The CIE coordinates of the device vary from (0.44, 0.44) at 5 V to (0.29, 0.34) at 18 V and are well within the white region.

引用

页码：326 / 329

页数：4

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] High-efficiency organic electrophosphorescent devices with tris(2-phenylpyridine)iridium doped into electron-transporting materials [J].

Adachi, C ;

Baldo, MA ;

Forrest, SR ;

Thompson, ME .

APPLIED PHYSICS LETTERS, 2000, 77 (06) :904-906

[3] Very high-efficiency green organic light-emitting devices based on electrophosphorescence [J].

Baldo, MA ;

Lamansky, S ;

Burrows, PE ;

Thompson, ME ;

Forrest, SR .

APPLIED PHYSICS LETTERS, 1999, 75 (01) :4-6

[4] White organic light-emitting devices using a phosphorescent sensitizer [J].

Cheng, G ;

Li, F ;

Duan, Y ;

Feng, J ;

Liu, SY ;

Qiu, S ;

Lin, D ;

Ma, YG ;

Lee, ST .

APPLIED PHYSICS LETTERS, 2003, 82 (24) :4224-4226

[5]

D'Andrade BW, 2002, ADV MATER, V14, P1032, DOI 10.1002/1521-4095(20020805)14:15<1032::AID-ADMA1032>3.0.CO

[6]

2-6

[7] Efficient organic electrophosphorescent white-light-emitting device with a triple doped emissive layer [J].

D'Andrade, BW ;

Holmes, RJ ;

Forrest, SR .

ADVANCED MATERIALS, 2004, 16 (07) :624-+

[8]

D'Andrade BW, 2002, ADV MATER, V14, P147, DOI 10.1002/1521-4095(20020116)14:2<147::AID-ADMA147>3.0.CO

[9]

2-3

[10] White light electroluminescence from a hole-transporting layer of mixed organic materials [J].

Gao, ZQ ;

Lee, CS ;

Bello, I ;

Lee, ST .

SYNTHETIC METALS, 2000, 111 :39-42

← 1 2 →