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1. WO2011125018 - ORGANIC LIGHT-EMITTING DIODE COMPRISING AT LEAST TWO ELECTROLUMINESCENT LAYERS

Publication Number WO/2011/125018
Publication Date 13.10.2011
International Application No. PCT/IB2011/051438
International Filing Date 04.04.2011
Chapter 2 Demand Filed 06.02.2012
IPC
H01L 51/50 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
51Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof
50specially adapted for light emission, e.g. organic light emitting diodes (OLED) or polymer light emitting devices (PLED)
H01L 51/52 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
51Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof
50specially adapted for light emission, e.g. organic light emitting diodes (OLED) or polymer light emitting devices (PLED)
52Details of devices
CPC
H01L 2251/552
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
2251Indexing scheme relating to organic semiconductor devices covered by group H01L51/00
50Organic light emitting devices
55characterised by parameters
552HOMO-LUMO-EF
H01L 51/006
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
51Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof
0032Selection of organic semiconducting materials, e.g. organic light sensitive or organic light emitting materials
005Macromolecular systems with low molecular weight, e.g. cyanine dyes, coumarine dyes, tetrathiafulvalene
0059Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
006comprising polycyclic condensed aromatic hydrocarbons as substituents on the nitrogen atom
H01L 51/0081
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
51Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof
0032Selection of organic semiconducting materials, e.g. organic light sensitive or organic light emitting materials
0077Coordination compounds, e.g. porphyrin
0079Metal complexes comprising a IIIB-metal (B, Al, Ga, In or TI), e.g. Tris (8-hydroxyquinoline) gallium (Gaq3)
0081comprising aluminium, e.g. Alq3
H01L 51/5016
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
51Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof
50specially adapted for light emission, e.g. organic light emitting diodes [OLED] or polymer light emitting devices [PLED]
5012Electroluminescent [EL] layer
5016Triplet emission
H01L 51/5036
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
51Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof
50specially adapted for light emission, e.g. organic light emitting diodes [OLED] or polymer light emitting devices [PLED]
5012Electroluminescent [EL] layer
5036Multi-colour light emission, e.g. colour tuning, polymer blend, stack of electroluminescent layers
Applicants
  • COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES [FR]/[FR] (AllExceptUS)
  • VAUFREY, David [FR]/[FR] (UsOnly)
  • SERMET, Frédéric [FR]/[FR] (UsOnly)
Inventors
  • VAUFREY, David
  • SERMET, Frédéric
Agents
  • CABINET ORES
Priority Data
100142306.04.2010FR
Publication Language French (fr)
Filing Language French (FR)
Designated States
Title
(EN) ORGANIC LIGHT-EMITTING DIODE COMPRISING AT LEAST TWO ELECTROLUMINESCENT LAYERS
(FR) DIODE ELECTROLUMINESCENTE ORGANIQUE COMPORTANT AU MOINS DEUX COUCHES ELECTROLUMINESCENTES
Abstract
(EN) The invention relates to an organic light-emitting diode which includes at least two electroluminescent layers (ELR, ELB), both of which are fluorescent or phosphorescent and emit at different wavelengths, as well as a hole- and electron-conducting buffer layer (T) arranged between said electroluminescent layers, characterised in that said buffer layer is a bi-layer comprising an electron-transport layer (T2) and a hole-transport layer (T1), each one of said hole- and electron-transport layers being made of one or more materials in which the HOMO level(s) are comprised between or equal to the HOMO levels of said electroluminescent layers, and in which the LUMO levels are comprised between or equal to the LUMO levels of said electroluminescent layers, with a tolerance of 0.3 eV.
(FR) Diode électroluminescente organique comprenant au moins deux couches électroluminescentes (ELR, ELB), toutes deux de type fluorescent ou de type phosphorescent et émettant à deux longueurs d'onde différentes, ainsi qu'une couche tampon (T) conductrice d'électrons et de trous disposée entre lesdites couches électroluminescentes, caractérisé en ce que ladite couche tampon est une bicouche comportant une couche de transport d'électrons (T2) et une couche de transport de trous (T1), chacune desdites couches de transport d'électrons et de trous étant constituée d'un ou plusieurs matériaux dont le ou les niveaux HOMO sont compris entre, ou égaux aux, niveaux HOMO desdites couches électroluminescentes, et dont les niveaux LUMO sont compris entre, ou égaux aux, niveaux LUMO desdites couches électroluminescentes, et cela avec une tolérance de 0,3 eV.
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