Organic electroluminescent device capable of forming spin-polarized injection

An electroluminescent device and spin-polarized technology, which is applied in the direction of electric solid-state devices, electrical components, semiconductor devices, etc., can solve the problems that cannot be broken and limit the external quantum efficiency of the device, and achieve the improvement of luminous brightness and current efficiency, The effect of increasing the scale
CN101661995AInactive Publication Date: 2010-03-03JILIN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JILIN UNIV
Publication Date
2010-03-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the technical field of organic electroluminescence and particularly relates to an organic electroluminescent device capable of forming spin-polarized injection by introducingtransition metal oxides. The structure of the device comprises an anode, an organic function layer and a cathode, wherein the organic function layer is a cavity injection layer or a cavity transmission layer, a luminescent layer and an electronic transmission layer; the cavity injection layer or the cavity transmission layer is partly doped; the doped material is Fe3O4; the volume ratio of the doped material and the main material is 1:4-2:1; alternatively, the structure of the device comprises a substrate, an anode, an anode cushioning layer Fe3O4, a luminescent layer, a cavity blocking layerand a cathode. The device can form spin-polarized injection under the action of an external magnetic field. The cavity injected from the anode is spin-polarized when passing the anode cushioning layeror the doped layer, the spin regulation on the carrier is realized, and the proportion of singlet exciton formed in the device is increased, so that the luminescent brightness and current efficiencyof the device are obviously improved.
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Description

technical field

[0001] The invention belongs to the technical field of organic electroluminescence, and in particular relates to an organic electroluminescence device which introduces a magnetic transition group metal oxide and can form spin polarization injection. technical background

[0002] The 21st century is an era of rapid development of information technology. With the popularization of digital multimedia technology and Internet technology, people have higher and higher requirements for display technology. Display technology has become an indispensable link in order to transmit a large amount of information to others in a timely and accurate manner. Therefore, as a terminal display of information products, it occupies an increasingly important position. However, the existing displays cannot keep up with the development of science and technology, and people urgently need higher-performance flat panel display devices (FPDs).

[0003] FPD is the main development direct...

Claims

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