A ketone-containing compound and its application in organic electroluminescent devices

A ketone compound and compound technology, applied in the application field of organic electroluminescent devices, can solve the problems of efficiency roll-off, difficult and high exciton utilization rate, high fluorescence radiation efficiency, low S1 state radiation transition rate, etc. Effects of recombination efficiency, improved luminous efficiency, and improved electron injection and transport performance
CN110526905BActive Publication Date: 2020-11-20JIANGSU SUNERA TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGSU SUNERA TECH CO LTD
Publication Date
2020-11-20

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Abstract

The invention discloses a compound containing ketone and its application in organic electroluminescent devices, belonging to the field of semiconductor applications. The compound contains a ketone structure and has strong rigidity. After connecting the structure of spiroazaanthrene fluorene derivatives, it has the characteristics of intermolecular crystallization and aggregation, and good film-forming properties; the compound of the present invention has bipolarity, branched The chain is an electron-donating group. Because the electron-donating ability of the group is different, the HOMO energy level of the material is different, and it can be used as a material for different functional layers; in addition, the compound of the present invention has a high triplet energy level, which can be Effectively block energy loss and facilitate energy transfer. Therefore, after the compound of the present invention is used as an organic electroluminescent functional layer material in an OLED device, the current efficiency, power efficiency and external quantum efficiency of the device are greatly improved; at the same time, the life of the device is significantly improved.
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Description

technical field

[0001] The invention relates to the technical field of semiconductors, in particular to a compound containing ketone and nitrogen heterocycle in the structure and its application in organic electroluminescent devices. Background technique

[0002] Organic electroluminescent (OLED: Organic Light Emission Diodes) device technology can be used to manufacture new display products and also can be used to make new lighting products, which is expected to replace the existing liquid crystal display and fluorescent lighting, and has a wide application prospect.

[0003] The OLED light-emitting device is like a sandwich structure, including electrode material film layers, and organic functional materials sandwiched between different electrode film layers. Various functional materials are superimposed on each other according to the application to form an OLED light-emitting device. As a current device, when a voltage is applied to the electrodes at both ends of the OLED...

Claims

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