Pyrene derivate organic electroluminescence material and preparation method thereof and organic electroluminescence device

A technology of electroluminescent materials and derivatives, applied in luminescent materials, electro-solid devices, electrical components, etc., can solve the problems of less than ideal life, high starting voltage, and no improvement in power efficiency.

CN107162869AInactive Publication Date: 2017-09-15JILIN OPTICAL & ELECTRONICS MATERIALS
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2017-09-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a pyrene derivate organic electroluminescence material and a preparation method thereof and an organic electroluminescence device, and relates to the field of luminescence materials. The pyrene derivate organic electroluminescence material is high in electronic transmission efficiency, so that the crystallizing can be prevented during the device manufacturing; the pyrene derivate organic electroluminescence material easily forms a layer, so that the current property of the device can be improved. The preparation method of the pyrene derivate organic electroluminescence material is characterized in that the raw materials are easily obtained; the processes are simple; the industrial production applies. The organic electroluminescence device is applicable to a planar luminescence bodies such as surface plates of various electronic devices like a wall-hung flat-panel television, a light source, a label and a logo of a copying machine, a printer, a liquid crystal display device or an instrument. Besides the organic electroluminescence device, the pyrene derivate organic electroluminescence material can also be applied to the fields such as the electronic photoreceptor field, the photoelectric conversion element field, the solar cell field and the image sensor field.
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Description

technical field

[0001] The invention relates to the field of luminescent materials, in particular to a pyrene derivative organic electroluminescent material, a preparation method thereof, and an organic electroluminescent device. Background technique

[0002] As a self-luminous display device, an electroluminescence device (EL device) has the advantages of wide viewing angle, good contrast, and fast response speed. In 1987, Eastman Kodak first developed an organic electroluminescent device (OLED) using low-molecular aromatic diamines and aluminum complexes as light-emitting layer materials. The most important factor determining luminous efficiency in OLEDs is the luminescent material. Hitherto, fluorescent materials have been widely used as light emitting materials. However, from the perspective of the mechanism of electroluminescence, the development of phosphorescent materials is one of the best methods to theoretically increase the luminous efficiency by 4 times. Iridi...

Examples

Embodiment 1～50

[0260] In the above-mentioned comparative example 1: the compound as the fluorescent host in the light-emitting layer was replaced by the compound synthesized in the above-mentioned reaction examples 1-25, and the compounds b and d were respectively used as the blue light doping compound, and the same method was used as in the above-mentioned comparative example 1. , prepared a structure such as: ITO / 2-TNATA (80nm) / α-NPD (30nm) / [main compound 1~25+blue light doping compound b or d(5%)](30nm) / Alq 3 (30nm) / LiF(0.5nm) / Al(60nm) organic light-emitting device. Denote this as samples 1 to 50.

[0261] Evaluation Example 1: Evaluation of light emission characteristics of Comparative Samples 1 and 2 and Samples 1 to 50.

[0262] For comparative samples 1 and 2 and samples 1 to 50, the luminous brightness, luminous efficiency, and luminous peak value were evaluated by Keithley sourcemeter "2400" and KONIKAMINOLTA "CS-2000", respectively. The results are shown in Table 1 below. The lu...