OLED (Organic Light Emitting Diode) device prepared by taking di (8-hydroxyquinoline) platinum as doped material

A technology of hydroxyquinoline and doping materials, which is applied in luminescent materials, electric solid-state devices, semiconductor devices, etc., and can solve the problems of reduced excimer effect, difficulty in modifying molecules with high-functional groups, and complicated synthesis steps.

Inactive Publication Date: 2013-01-02
无锡信怡微电子有限公司
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Problems solved by technology

[0003] At present, there are few systematic studies on near-infrared phosphorescent materials and devices in the world. The near-infrared phosphorescent systems with better efficiency have been reported as porphyrin-platinum(II) complexes and C^N^N-platinum(II) complexes. ) excimer complexes, but the synthesis steps of the former are relatively complicated, and it is not easy to introduce other high-functional groups for molecular modification, while the latter emits light from eximeric complexes, and the introduction of any high-functional groups will bring certain steric hindrance effect, which may reduce the excimer effect, resulting in the main emission of the monomer (yellow light)

Method used

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  • OLED (Organic Light Emitting Diode) device prepared by taking di (8-hydroxyquinoline) platinum as doped material
  • OLED (Organic Light Emitting Diode) device prepared by taking di (8-hydroxyquinoline) platinum as doped material
  • OLED (Organic Light Emitting Diode) device prepared by taking di (8-hydroxyquinoline) platinum as doped material

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Embodiment

[0021] (1) Preparation of two (8-hydroxyquinoline) platinum (Ptq 2 ):

[0022] Weigh 3mmol of K 2 PtCl 4 Dissolve in 5ml of water, weigh 6mmol of 8-hydroxyquinoline, add them to 100ml of three-necked bottles, take 20ml of glacial acetic acid as a solvent, add a small amount of 1mol / L NaOH aqueous solution, make the pH of the whole system 4, turn on the magnetic force Stirring, the whole reaction system was reacted at 70°C for 1 hour. After cooling, an orange-red precipitate precipitated, filtered, washed with diluted glacial acetic acid, ethanol, and dichloromethane, and then reconstituted in N,N-dimethylformamide. Crystallized to obtain a red crystalline product.

[0023] (2) Using two (8-hydroxyquinoline) platinum (Ptq 2 ) as doping material to prepare OLEDs:

[0024] OLED devices use indium tin oxide (ITO) as a transparent conductive film glass (anode); its surface resistance is less than 20 W / ??. The ITO glass was ultrasonically cleaned with ethanol, toluene, and ace...

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Abstract

The invention discloses an OLED (Organic Light Emitting Diode) device prepared by taking di(8-hydroxyquinoline)platinum as a doped material, taking indium tin oxide (ITO) as transparent conductive film glass (an anode), taking N,N'-di(1-naphthyl)-N,N'-diphenyl-1,1'-biphenyl-4,4'-diamine (NPB) as a hole transport material, taking 4,4'-di(9-carbazole)biphenyl (CPB) doped with di(8-hydroxyquinoline)platinum (Ptq2) as a main raw material, taking 2,9-dimethyl-4,7-biphenyl-1,10-phenanthroline (BCP) as a hole blocking material, taking 8-hydroxyquinoline (Alq3) as an electron transport material and taking aluminum/lithium fluoride as a cathode. According to the OLED device prepared by doping Ptq2 which serves as a phosphor material in the main raw material, the maximum electroluminescence wavelength is within a near-infrared area (700-850nm), and the OLED device has excellent electrical conductivity and stability.

Description

technical field [0001] The invention relates to the technical field of organic electroluminescence, in particular to an OLED device doped with bis(8-hydroxyquinoline) platinum. Background technique [0002] Organic electroluminescent technology (OLEDs), as one of the internationally recognized new-generation flat panel display technologies, has active light emission compared with the main flat panel display products on the market such as liquid crystal displays; the manufacturing process is simple, the cost is low; and the power consumption is low; Large viewing angle; light weight, small size; fast response, etc. Compared with fluorescent light-emitting materials, phosphorescent materials can effectively utilize singlet and triplet excitons, and can obtain a larger external quantum yield. Organic phosphorescent materials are being used in electroluminescent devices due to their high electroluminescence efficiency. [0003] At present, there are few systematic studies on n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/54H01L51/52C09K11/06
Inventor 向海峰
Owner 无锡信怡微电子有限公司
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