Optical and electroluminescent properties of a new green emitting Ir(III) complex

被引：18

作者：

Das, RR ^{[1
]}

Lee, CL ^{[1
]}

Noh, YY ^{[1
]}

Kim, JJ ^{[1
]}

机构：

[1] Kwangju Inst Sci & Technol, Dept Mat Sci & Engn, Buk Gu, Kwangju 500712, South Korea

来源：

OPTICAL MATERIALS | 2003年 / 21卷 / 1-3期

关键词：

electrophosphorescence; Ir(mpp)(3); energy transfer;

D O I：

10.1016/S0925-3467(02)00126-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have synthesized and characterized a new green Ir(III) complex, Ir(mpp)(3), with the ligand 3-methyl-2-phenyl-pyridine (Hmpp) and fabricated phosphorescent light emitting devices with the complex as a triplet emissive dopant in PVK. The PL and EL spectra of the PVK film doped with the complex confirm an efficient energy transfer from carbazole excimer to Ir complex. The device showed a maximum external quantum efficiency of 4.5% for 2% Ir(mpp)(3) doping concentrations, and a peak luminance of 25,000 cd/m(2). The device demonstrates the effect brought in by the fine-tuning of the ligand, 2-phenylpyridine in the form of the methyl substitution in the pyridine ring. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：143 / 146

页数：4

共 8 条

[1]

CLIFFORD HJ, 1970, 25 ANN NW REG M AM C

[2] EQUILIBRIA IN COMPLEXES OF N-HETEROCYCLIC MOLECULES .48. DIMORPHS OF FACIAL-TRICHLORO-TRIS-PYRIDINE-IRIDIUM(III) [J].

GILLARD, RD ;

MITCHELL, SH .

POLYHEDRON, 1989, 8 (18) :2245-2249

[3] Polymer phosphorescent light-emitting devices doped with tris(2-phenylpyridine) iridium as a triplet emitter [J].

Lee, CL ;

Lee, KB ;

Kim, JJ .

APPLIED PHYSICS LETTERS, 2000, 77 (15) :2280-2282

[4] Orange and red organic light-emitting devices using aluminum tris(5-hydroxyquinoxaline) [J].

Shoustikov, A ;

You, YJ ;

Burrows, PE ;

Thompson, ME ;

Forrest, SR .

SYNTHETIC METALS, 1997, 91 (1-3) :217-221

[5] Electroluminescence color tuning by dye doping in organic light-emitting diodes [J].

Shoustikov, AA ;

You, YJ ;

Thompson, ME .

IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, 1998, 4 (01) :3-13

[6] PHOTOPHYSICAL EFFECTS OF METAL-CARBON SIGMA-BONDS IN ORTHO-METALATED COMPLEXES OF IR(III) AND RH(III) [J].

SPROUSE, S ;

KING, KA ;

SPELLANE, PJ ;

WATTS, RJ .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1984, 106 (22) :6647-6653

[7] Effect of delocalization and rigidity in the acceptor ligand on MLCT excited-state decay [J].

Treadway, JA ;

Loeb, B ;

Lopez, R ;

Anderson, PA ;

Keene, FR ;

Meyer, TJ .

INORGANIC CHEMISTRY, 1996, 35 (08) :2242-2246

[8] LUMINESCENCE TUNING OF 2,2'-BIPYRIDINE AND 1,10-PHENANTHROLINE COMPLEXES OF IRIDIUM(III) IN FLUID SOLUTION [J].

WATTS, RJ .

INORGANIC CHEMISTRY, 1981, 20 (07) :2302-2306

← 1 →