Biphenyl tetramine compound and organic electroluminescent device
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A biphenyltetramine and compound technology, applied in the field of biphenyltetramine compounds and their organic electroluminescent devices, can solve the problems of reduced device life, damage to interface contacts, and light-emitting devices that cannot meet the lifespan, efficiency and energy consumption. Achieve the effect of long half-life and low driving voltage
Active Publication Date: 2020-07-14
CHANGCHUN HYPERIONS TECH CO LTD
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This kind of crystallization will destroy the uniformity of the film, and at the same time destroy the good interfacial contact between the hole transport layer, the anode and the organic layer, resulting in a decrease in the life of the device. Therefore, to improve the life of the device, it is usually used Transition temperature (T g )s material
[0003] Hole-injection materials or hole-transport materials are major obstacles to the full practical application of organic electroluminescent technology, which directly limit the luminous efficiency, service life and operating voltage of the device.
Organic electroluminescent devices with hole injection layers or hole transport layers made of traditional materials cannot meet the needs of life, efficiency, and energy consumption, so materials that have significantly improved these properties are needed
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[0093] Compound Preparation and Characterization
[0094] Description of starting materials, reagents, and characterization equipment:
[0164] In Examples 1 to 7, compounds (1), (2), (21), (34), (87), (150), and (124) listed in Table 1 were used instead of HI as the hole injection material. -1. Except for the above, the same operation was carried out to fabricate an organic electroluminescent device. For the obtained organic electroluminescence device, the measurement data of the emission color, half-life and driving voltage are shown in Table 1.
[0166] In Examples 8 to 11, the compounds (125), (129), (128), and (152) described in Table 1 were used instead of TBDB as the hole transport material, and the same operation was carried out to produce Electromechanical Luminescent Devices. For the obtained organic electroluminescence device, the measurement data of the emission color, half-life and driving voltage are shown in Table 1.
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Abstract
The invention provides a biphenyltetramine compound and an organic light-emitting device. The biphenyltetramine compound is good in charge transfer performance, long in time luminescence, large in conjugation area, easy to prepare, low in cost and capable of being well applied to the technical field of organic light-emitting devices, and the service life of the device can be prolonged, and the efficiency of the device can be improved.
Description
technical field [0001] The invention relates to the technical field of organic photoelectric materials, in particular to a biphenyltetramine compound and an organic electroluminescence device thereof. Background technique [0002] Organic light-emitting devices (organic light-emitting devices), referred to as OLED, is an all-solid-state flat-panel display technology developed in the 1980s. Organic electroluminescence refers to the phenomenon that organic semiconductor materials emit light through carrier injection, transport, recombination to form excitons and exciton decay under the drive of an electric field. In organic electroluminescent devices, the function of the hole transport layer is to improve the transport efficiency of holes in the device and block electrons in the light-emitting layer to achieve the maximum recombination of carriers. The hole transport layer can reduce the energy barrier of holes during the injection process, increase the hole injection efficie...
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