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Organic light-emitting diode

A technology of electroluminescent components and components, which is applied in the direction of electrical components, electric solid-state devices, circuits, etc., and can solve problems such as low efficiency

Active Publication Date: 2019-04-16
SHANGHAI BLUESHINE OPTOELECTRONICS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of low current efficiency and poor thermal stability of materials in the existing OLED technology, the present invention provides a high-efficiency organic electroluminescent element, which mainly solves the problem of blue OLED devices with long life and thermal stability of materials. The disadvantage of low efficiency

Method used

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Embodiment

[0068] The representative donor material or acceptor material involved in the present invention is obtained by referring to the synthesis method mentioned in the patent (CN106831581A).

[0069] General methods for the manufacture of organic electro-devices:

[0070] On the surface of the ITO glass whose luminous area is 2mm×2mm size, use the method of vacuum evaporation, spin coating, printing or printing to p-doped material P-1~P-6 or this p-doped material with 1%~50 % concentration forms the hole injection layer (HIL) of 5-50nm together with the hole transport material, then forms the hole transport layer (HTL) of 5-200nm, then forms the luminescent layer of 5-100nm on the hole transport layer ( EML), and finally form an electron transport layer (ETL) 10-200nm and a cathode 50-200nm in turn, if necessary, add an electron blocking layer (EBL) between the HTL and EML layers, and add an electron injection layer (EIL) between the ETL and the cathode Thus, an organic light emitt...

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Abstract

The invention provides an organic light-emitting diode. A luminescent layer of the organic light-emitting diode (OLED) is composed by mixing a donor material, an acceptor material and one of a fluorescence luminescent material or phosphorescence luminescent material or thermal-delayed fluorescence material or quantum dot luminescent material or perovskite material. The donor material and the acceptor material with the triplet state energy level being higher than 2.7eV and the glass transition temperature being greater than 120 DEG C are combined, the excited state of charge transfer between high energy molecules is obtained, and the energy is higher than 2.75eV. Through the high-efficiency anti-interstitial traversal and the fluorescence resonance energy transfer between the excited stateand a guest material, the complete utilization of singlet state and triplet state energy for the guest material is realized, and the obtained organic light-emitting diode has the advantages of high efficiency, low operating voltage and long service life, can be used in a display device or light source device and has a good commercial application prospect.

Description

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

Claims

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Application Information

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IPC IPC(8): H01L51/50H01L51/54H01L51/56
CPCH10K85/624H10K50/11H10K2101/40H10K50/115H10K50/12H10K71/00
Inventor 王子兴吕瑶
Owner SHANGHAI BLUESHINE OPTOELECTRONICS TECH CO LTD
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