Organic electroluminescent device and preparation method thereof

An electroluminescence device and electroluminescence technology, which are applied in the manufacturing of organic semiconductor devices, electric solid state devices, semiconductor/solid state devices, etc., can solve problems such as complex structure, and achieve the effect of improving injection capacity and simple structure
CN104124384AInactive Publication Date: 2014-10-29OCEANS KING LIGHTING SCI&TECH CO LTD +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
OCEANS KING LIGHTING SCI&TECH CO LTD
Publication Date
2014-10-29
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an organic electroluminescent device comprising a transparent substrate, cathode sequentially stacked, low work function metal layer, a first light-emitting unit, a charge generating layer, a second light-emitting unit and the anode, the cathode material for transparent conductive oxide, the work function of the low work function metal layer material is 2.7eV ~ 3.0eV, the charge generating layer comprises a laminated to the first light-emitting unit surface metal oxide layer and N type doping layer laminated on the metal oxide layer on surface, the metal oxide layer material selected from the group consisting of molybdenum trioxide, tungsten trioxide and five oxygen at least a two V, the N type doping layer material including lithium carbonate organic materials and doping in the organic material, the quality of the lithium carbonate and the organic material ratio of 15: 100, the anode material for transparent conductive oxide. The organic electroluminescent device has advantages of simple structure and double light. The invention also provides an organic electroluminescent device preparation method.
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Description

Technical field

[0001] The invention relates to an organic electroluminescence device and a preparation method thereof. Background technique

[0002] The light-emitting principle of organic electroluminescent devices (OLED) is based on the fact that electrons are injected from the cathode to the lowest unoccupied molecular orbital (LUMO) of organic matter under the action of an external electric field, while holes are injected from the anode to the highest occupied orbital (HOMO) of organic matter. ). Electrons and holes meet and recombine in the light-emitting layer to form excitons. The excitons migrate under the action of an electric field, transfer energy to the luminescent material, and excite the electrons to transition from the ground state to the excited state. The excited state energy is deactivated by radiation to produce photons , Release light energy.

[0003] Most of the existing OLEDs can only take out the light from one side of the anode or the cathode to produce b...

Claims

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