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1,3,5-triazine derivative, and organic electroluminescent device produced by using same

A technology of triazine derivatives and phenyl groups, applied in the field of organic electroluminescence devices, can solve the problems of loss of luminous efficiency, reduce the efficiency of TADF devices, etc., and achieve the promotion of intersystem jumping, improving radiation transition rate, and high radiation transition. rate effect

Inactive Publication Date: 2019-06-04
KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the TADF material in the prior art in reducing ΔE ST At the same time, it leads to the complete separation between the HOMO orbit and the LUMO orbit, which causes the loss of luminous efficiency and reduces the efficiency roll-off of the TADF device.

Method used

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  • 1,3,5-triazine derivative, and organic electroluminescent device produced by using same
  • 1,3,5-triazine derivative, and organic electroluminescent device produced by using same
  • 1,3,5-triazine derivative, and organic electroluminescent device produced by using same

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Embodiment 1

[0056] This embodiment provides an organic electroluminescent device. The organic electroluminescent device uses 1,3,5-triazine derivatives as the luminescent dye of the light-emitting layer. The specific structure of the 1,3,5-triazine derivative is as follows :

[0057]

[0058] Such as figure 1 As shown, the organic electroluminescent device has a first electrode 1 , a second electrode 2 and an organic functional layer 3 between the first electrode 1 and the second electrode 2 . The first electrode 1 is an anode, the second electrode 2 is a cathode, and the organic functional layer 3 includes a hole transport layer 31 , a light emitting layer 32 and an electron transport layer 33 stacked.

[0059] The anode in the organic electroluminescent device is made of ITO material; the hole transport layer 31 is made of a hole transport material: 4,4'-cyclohexylbis[N,N-bis(4-methylphenyl)]aniline (referred to as: TAPC), 4,4',4"-tris(carbazol-9-yl)triphenylamine (abbreviation: TC...

Embodiment 2

[0063] This embodiment provides an organic electroluminescent device, the structure of which is the same as that of Embodiment 1, and the luminescent dye is replaced by a 1,3,5-triazine derivative with the following structure:

[0064]

Embodiment 3

[0066] This embodiment provides an organic electroluminescent device, the structure of which is the same as that of Embodiment 1, and the luminescent dye is replaced by a 1,3,5-triazine derivative with the following structure:

[0067]

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Abstract

The present invention discloses a 1,3,5-triazine derivative having a structure represented by formula I. A spacing unit introduced between the triazinyl group, used as an electron acceptor, and the electron-donating group of the 1,3,5-triazine derivative makes an organic electroluminescent material have a small deltaEST and a high radiation transition rate. The invention also discloses an organicelectroluminescent device. At least one functional layer contains the 1,3,5-triazine derivative, and 1,3,5-triazine derivative has the small deltaEST and the high radiation transition rate as a dye, so the device has a high luminous efficiency. When the 1,3,5-triazine derivative is used as a host material, the reverse intersystem crossing of triplet excitons of the host material to singlet excitons is enhanced, the Foster energy transfer is enhanced, the quenching of the triplet excitons is reduced, the roll-off of the device is small, the external quantum efficiency is high, and the efficientuse of devices under a high brightness is benefited.

Description

technical field [0001] The invention belongs to the field of display technology, and in particular relates to a 1,3,5-triazine derivative and an organic electroluminescent device prepared by using the same. Background technique [0002] Organic Optoelectronic Materials (Organic Optoelectronic Materials) are organic materials with the characteristics of photon and electron generation, conversion and transmission. At present, the controllable photoelectric properties of organic photoelectric materials have been applied in organic light-emitting diodes (Organic Light-Emitting Diode, OLED), organic solar cells (Organic Photovoltage, OPV), organic field effect transistors (Organic Field Effect Transistor, OFET), bio / Chemical / photosensors, memory, even organic lasers. Unlike traditional inorganic conductors, organic compounds can be synthesized by chemical methods, so that a large number of organic semiconductor materials with different properties can be designed and prepared, w...

Claims

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Application Information

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IPC IPC(8): C07D487/04C07D471/14C07D519/00C09K11/06C09B57/00H01L51/50H01L51/54
Inventor 段炼宋晓增张东东蔡明瀚魏金贝
Owner KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD
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