Red organic electroluminescent devices and its preparation method

An electroluminescence and red technology, applied in the field of red organic electroluminescence devices and their preparation, can solve the problems of incomplete energy transfer of trivalent europium complexes, unfavorable device luminous efficiency and brightness, only 1.4%, etc. luminescence efficiency, increase the probability of carrier recombination, and reduce the effect of exciton concentration
CN100586243CActive Publication Date: 2010-01-27CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
Publication Date
2010-01-27

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Abstract

The invention belongs to a red organic electroluminescence device and a preparing method thereof. A vacuum evaporation technology is adopted to prepare indium tin oxide / 4, 4'-twin [N-(p-methylphenyl)-N-phenyl-amino] diphenyl or N, N'-double(1- naphthyl)-N, N'-biphenyl-1, 1'-biphenyl-4 and 4'-diamine / 8-hydroxyquinoline aluminum, classical trivalence europium composition Eu (TTA)3phen taking trifluoroacetylacetone thiofuran and BPT as a first ligand and a second ligand, and a main material 4, 4'-N, N'-twin carbazole biphenyl / 2, 9- dimethyl-4, 7- dimethyl-1, 10- phenanthroline / 8- hydroxyquinoline aluminum / lithium fluoride / aluminum. The ultimate electroluminescence current efficiency of the device is 6.1cd / A, the ultimatepower efficiency is 3.5lm / W, and the ultimate brightness is 2451.69cd / m<2>.
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Description

technical field

[0001] The invention relates to a red organic electroluminescent device and a preparation method thereof. Background technique

[0002] Compared with other flat display technologies such as liquid crystal displays, plasma display devices, and field emission displays, organic electroluminescent displays have a series of excellent characteristics, such as: adjustable luminous color, active luminescence, high brightness, high efficiency, wide viewing angle, Low energy consumption, simple preparation process, and the ability to prepare curved and flexible display screens have broad application prospects in the field of large flat-panel full-color displays, and are generally considered to be the most competitive next-generation display technology. At present, the performance of green and blue organic electroluminescent devices has been significantly improved, and a small number of products have come out. However, as one of the three essential colors for organic e...

Claims

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