Title:
ORGANIC LIGHT-EMITTING DIODE WITH AN IMPROVED SERVICE LIFE
Document Type and Number:
WIPO Patent Application WO2005112147
Kind Code:
A3
Abstract:
The invention relates to an OLED, in which the service life is significantly increased for the first time by the adroit application of at least one layer consisting of a co-polyaryl borane polymer between the cathode and the emitter layer and/or between the anode and the emitter layer. This is achieved by the use of the co-polyaryl borane polymer both as a hole-blocking and electron-attracting intermediate layer. The use of at least one layer of this type permits in particular the region in which recombination takes place and the balance of the charge carrier of an OLED to be controlled and operated in an improved manner.
Inventors:
HENSELER DEBORA (DE)
HEUSER KARSTEN (DE)
HUNZE ARVID (DE)
KANITZ ANDREAS (DE)
ROGLER WOLFGANG (DE)
ROTH WOLFGANG (DE)
WOERLE JASMIN (DE)
HEUSER KARSTEN (DE)
HUNZE ARVID (DE)
KANITZ ANDREAS (DE)
ROGLER WOLFGANG (DE)
ROTH WOLFGANG (DE)
WOERLE JASMIN (DE)
Application Number:
PCT/EP2005/052087
Publication Date:
February 16, 2006
Filing Date:
May 09, 2005
Export Citation:
Assignee:
SIEMENS AG (DE)
HENSELER DEBORA (DE)
HEUSER KARSTEN (DE)
HUNZE ARVID (DE)
KANITZ ANDREAS (DE)
ROGLER WOLFGANG (DE)
ROTH WOLFGANG (DE)
WOERLE JASMIN (DE)
HENSELER DEBORA (DE)
HEUSER KARSTEN (DE)
HUNZE ARVID (DE)
KANITZ ANDREAS (DE)
ROGLER WOLFGANG (DE)
ROTH WOLFGANG (DE)
WOERLE JASMIN (DE)
International Classes:
C08G79/08; H01L51/30; H01L51/50; (IPC1-7): H01L51/30; H01L51/20
Domestic Patent References:
| WO2004099291A1 | 2004-11-18 | |||
| WO2005030828A1 | 2005-04-07 |
Foreign References:
| EP1371709A1 | 2003-12-17 |
Other References:
N. MATSUMI, K. NAKA, Y. CHUJO: "Extension of pi-Conjugated Length via the Vacant p-Orbital of the Boron Atom. Synthesis of Novel Electron Deficient pi-Conjugated Systems by Hydroboration Polymerization and Their Blue Light Emission", JOURNAL OF THE AMERICAN CHEMICA SOCIETY, J. AM. CHEM. SOC., vol. 120, 5 December 1998 (1998-12-05), pages 5112 - 5113, XP002349652
KINOSHITA M ET AL: "A NOVEL FAMILY OF BORON-CONTAINING HOLE-BLOCKING AMORPHOUS MOLECULAR MATERIALS FOR BLUE- AND BLUE-VIOLET-EMITTING ORGANIC ELECTROLUMINESCENT DEVICES", ADVANCED FUNCTIONAL MATERIALS, WILEY INTERSCIENCES, WIENHEIM, DE, vol. 11/12, no. 12, December 2002 (2002-12-01), pages 780 - 786, XP001141057, ISSN: 1616-301X
KINOSHITA M ET AL: "A NOVEL FAMILY OF BORON-CONTAINING HOLE-BLOCKING AMORPHOUS MOLECULAR MATERIALS FOR BLUE- AND BLUE-VIOLET-EMITTING ORGANIC ELECTROLUMINESCENT DEVICES", ADVANCED FUNCTIONAL MATERIALS, WILEY INTERSCIENCES, WIENHEIM, DE, vol. 11/12, no. 12, December 2002 (2002-12-01), pages 780 - 786, XP001141057, ISSN: 1616-301X
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