Harvesting triplet excitons from fluorescent blue emitters in white organic light-emitting diodes

被引：399

作者：

Schwartz, Gregor ^{[1
]}

Pfeiffer, Martin ^{[1
]}

Reineke, Sebastian ^{[1
]}

Walzer, Karsten ^{[1
]}

Leo, Karl ^{[1
]}

机构：

[1] Tech Univ Dresden, Inst Angewandte Photophys, D-01069 Dresden, Germany

来源：

ADVANCED MATERIALS | 2007年 / 19卷 / 21期

关键词：

D O I：

10.1002/adma.200700641

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A novel concept for white organic light emitting diodes (OLEDs) enabling the utilization of all electrically generated excitons for light generation is introduced. The key feature is a fluorescent blue emitter with high triplet energy, rendering it possible to harvest its triplet excitons by letting them diffuse to an orange phosphorescent iridium complex.

引用

页码：3672 / +

页数：6

共 26 条

[1] 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

[2] Excitonic singlet-triplet ratio in a semiconducting organic thin film [J].

Baldo, MA ;

O'Brien, DF ;

Thompson, ME ;

Forrest, SR .

PHYSICAL REVIEW B, 1999, 60 (20) :14422-14428

[3] Transient analysis of organic electrophosphorescence. II. Transient analysis of triplet-triplet annihilation [J].

Baldo, MA ;

Adachi, C ;

Forrest, SR .

PHYSICAL REVIEW B, 2000, 62 (16) :10967-10977

[4] Low voltage organic light emitting diodes featuring doped phthalocyanine as hole transport material [J].

Blochwitz, J ;

Pfeiffer, M ;

Fritz, T ;

Leo, K .

APPLIED PHYSICS LETTERS, 1998, 73 (06) :729-731

[5] Interface electronic structure of organic semiconductors with controlled doping levels [J].

Blochwitz, J. ;

Fritz, T. ;

Pfeiffer, M. ;

Leo, K. ;

Alloway, D. M. ;

Lee, P. A. ;

Armstrong, N. R. .

ORGANIC ELECTRONICS, 2001, 2 (02) :97-104

[6] Electron and hole transport in poly(p-phenylene vinylene) devices [J].

Blom, PWM ;

deJong, MJM ;

Vleggaar, JJM .

APPLIED PHYSICS LETTERS, 1996, 68 (23) :3308-3310

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

D'Andrade, BW ;

Forrest, SR .

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

[8] Controlled p doping of the hole-transport molecular material N,N′-diphenyl-N,N′-bis(1-naphthyl)-1,1′-biphenyl-4,4′-diamine with tetrafluorotetracyanoquinodimethane [J].

Gao, WY ;

Kahn, A .

JOURNAL OF APPLIED PHYSICS, 2003, 94 (01) :359-366

[9] Triplet exciton confinement and unconfinement by adjacent hole-transport layers [J].

Goushi, K ;

Kwong, R ;

Brown, JJ ;

Sasabe, H ;

Adachi, C .

JOURNAL OF APPLIED PHYSICS, 2004, 95 (12) :7798-7802

[10] ANGULAR-DEPENDENCE OF THE EMISSION FROM A CONJUGATED POLYMER LIGHT-EMITTING DIODE - IMPLICATIONS FOR EFFICIENCY CALCULATIONS [J].

GREENHAM, NC ;

FRIEND, RH ;

BRADLEY, DDC .

ADVANCED MATERIALS, 1994, 6 (06) :491-494

← 1 2 3 →