A thermally activated delayed fluorescent material and its application
A technology for thermally activated delayed and fluorescent materials, applied in the field of organic electroluminescent materials, can solve the problem that the luminescence performance cannot meet the requirements of OLED devices, etc., and achieve the effects of improving carrier balance, reducing overlap, and improving fluorescence quantum efficiency
Active Publication Date: 2022-05-31
WUHAN TIANMA MICRO ELECTRONICS CO LTD
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
[0005] CN106966954A, CN109651242A, CN108586441A, etc. disclose TADF materials and organic photoelectric devices containing them, but there are few TADF materials found so far, and the luminous performance cannot meet people's requirements for OLED devices
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Embodiment 1
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Embodiment 2
[0106] The present embodiment provides a thermally activated delayed fluorescent material, the structure is as follows:
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Embodiment 3
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Abstract
The invention provides a thermally activated delayed fluorescent material and its application. The thermally activated delayed fluorescent material is a compound having the structure shown in formula I, which can be used as a light-emitting layer material of an organic electroluminescent device. The thermally activated delayed fluorescent material is applied to an organic electroluminescent device, and the organic electroluminescent device includes an anode, a cathode and at least one organic thin film layer between the anode and the cathode, and the light emitting layer in the organic thin film layer includes any one or a combination of at least two of the thermally activated delayed fluorescent materials. The energy level difference between the triplet state and the singlet state of the thermally activated delayed fluorescent material provided by the present invention can be reduced to below 0.25eV, and as a light-emitting layer material in an organic electroluminescent device, it can improve carrier balance, increase luminous efficiency, Reduce device voltage.
Description
A thermally activated delayed fluorescent material and its application technical field The invention belongs to the technical field of organic electroluminescent materials, and is specifically related to a thermally activated delayed fluorescent material and the same application. Background technique Organic electroluminescence is an emerging technology with broad practical prospects in the field of optoelectronic devices. After the rise of organic electroluminescent materials and devices (Organic Light Emitting Diode, OLED), it has been researched. extensive attention and active participation of researchers. Compared with inorganic electroluminescent devices, organic electroluminescent devices have high brightness, It has the advantages of high efficiency, low driving voltage, wide viewing angle, etc., and can be used to fabricate large-area flexible and bendable devices. However, the same city Compared with display products widely used in the field, OLED displa...
Claims
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IPC IPC(8): C07F5/02C09K11/06H01L51/54H01L51/50H10K99/00
CPCC07F5/027C09K11/06C09K2211/1029C09K2211/1033C09K2211/1088C09K2211/1096C09K2211/1007C09K2211/1014C09K2211/1037C09K2211/1011C09K2211/1092C09K2211/1044H10K85/622H10K85/624H10K85/615H10K85/631H10K85/6576H10K85/6574H10K85/657H10K85/6572H10K50/12H10K50/11C09K2211/1018H10K50/15H10K50/16H10K50/17H10K50/18H10K50/171H10K2101/10
Inventor 柯鑫汪奎
Owner WUHAN TIANMA MICRO ELECTRONICS CO LTD