An organic electro-optic element

An electroluminescent element, organic technology, applied in electrical components, electro-solid devices, circuits, etc., can solve problems such as low efficiency
CN109638170BActive Publication Date: 2021-10-19SHANGHAI BLUESHINE OPTOELECTRONICS TECH CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI BLUESHINE OPTOELECTRONICS TECH CO LTD
Publication Date
2021-10-19

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Abstract

The invention provides an organic electroluminescent element, the light-emitting layer in the organic electroluminescent element (OLED) consists of a donor material, an acceptor material, a fluorescent light-emitting material or a phosphorescent light-emitting material or a thermally delayed fluorescent material or a quantum dot A hybrid composition of luminescent materials or perovskite materials. Combining a donor material with a triplet energy level higher than 2.7eV and a glass transition temperature higher than 120 degrees with an acceptor material can obtain a high-energy intermolecular charge transfer excited state with an energy higher than 2.75eV. Through efficient anti-gap crossing and fluorescence resonance energy transfer between the excited state and the guest material, the full utilization of the singlet and triplet energy of the guest material is realized, and the obtained components have the advantages of high efficiency, low operating voltage and long service life. , can be applied to a display device or a light source device, and has good commercial application prospects.
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Description

technical field

[0001] The invention belongs to the technical field of organic optoelectronics, and in particular relates to an organic electroluminescence element. Background technique

[0002] As a new generation of flat panel display technology, organic electroluminescence (OLED) has gradually entered people's field of vision. Its wide application prospects and rapid technological advancement in recent years have made OLED the most popular research in the field of flat panel information display and scientific research product development. one.

[0003] The mechanism of OLED luminescence is that under the action of an external electric field, electrons and holes are respectively injected from the positive and negative poles and then migrate, recombine and decay in the organic material to produce luminescence. A typical structure of an OLED includes a cathode layer, an anode layer, and an organic functional layer between these two layers. The organic functional layer may i...

Claims

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