Efficient white light emitting using an electron blocker in non-doped type organic electroluminescent devices

被引：7

作者：

Xie, W ^{[1
]}

Wu, Z ^{[1
]}

Liu, S ^{[1
]}

机构：

[1] Jilin Univ, Natl Lab Integrated Optoelect, Changchun 130023, Jilin, Peoples R China

来源：

OPTICAL AND QUANTUM ELECTRONICS | 2004年 / 36卷 / 07期

基金：

中国国家自然科学基金;

关键词：

electron-blocking layer; electroluminscent device; white emission;

D O I：

10.1023/B:OQEL.0000034723.05031.c9

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：

Non-doped type white organic electroluminescent (EL) devices using vacuum-deposited organic thin films of blue-emitting 4,4'-bis(2,2' diphenylvinyl)-1,1'-biphenyl (DPVBi) and yellow-emitting ultrathin 5,6,11,12-tetraphenylnaphthacene ( rubrene) to generate white emission were fabricated. The two emitting layers are separated by an electron blocking layer of N,N'-bis-(1-naphthyl)-N,N'-diphenyl-1,1'-biph-enyl-4,4'-diamine (NPB). The thickness of the blocking layer determines the spectrum of the devices. In a device with 5 nm electron blocker of NPB, the CIE coordinates were well within the white region for voltage raging from 3 V to 14 V. The device has a maximum luminance of 7400 cd/m(2) ( at current density of 830 mA/cm(2)) and maximum power efficiency of 1.67 lm/W at 5 V.

引用

页码：635 / 640

页数：6

共 18 条

[1] Bright white small molecular organic light-emitting devices based on a red-emitting guest-host layer and blue-emitting 4,4′-bis(2,2′-diphenylvinyl)-1,1′-biphenyl [J].

Cheon, KO ;

Shinar, J .

APPLIED PHYSICS LETTERS, 2002, 81 (09) :1738-1740

[2]

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

[3]

2-6

[4]

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

[5]

2-3

[6] White light emission from exciplex using tris-(8-hydroxyquinoline)aluminum as chromaticity-tuning layer [J].

Feng, J ;

Li, F ;

Gao, WB ;

Liu, SY ;

Liu, Y ;

Wang, Y .

APPLIED PHYSICS LETTERS, 2001, 78 (25) :3947-3949

[7] Red organic light-emitting diodes using an emitting assist dopant [J].

Hamada, Y ;

Kanno, H ;

Tsujioka, T ;

Takahashi, H ;

Usuki, T .

APPLIED PHYSICS LETTERS, 1999, 75 (12) :1682-1684

[8] Characterization of blue-light-emitting organic electroluminescent devices [J].

Haskal, EI .

SYNTHETIC METALS, 1997, 91 (1-3) :187-190

[9] Organic multi-color electroluminescence display with fine pixels [J].

Hosokawa, C ;

Eida, M ;

Matsuura, M ;

Fukuoka, K ;

Nakamura, H ;

Kusumoto, T .

SYNTHETIC METALS, 1997, 91 (1-3) :3-7

[10] Highly efficient blue electroluminescence from a distyrylarylene emitting layer with a new dopant [J].

Hosokawa, C ;

Higashi, H ;

Nakamura, H ;

Kusumoto, T .

APPLIED PHYSICS LETTERS, 1995, 67 (26) :3853-3855

← 1 2 →