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A Deep Blue Light Organic Iridium(Ⅲ) Complex OLED Device

A complex and organic technology, applied in the field of OLED devices, can solve the problems of red shift of emission color and low quantum efficiency, and achieve the effects of low lighting voltage, high external quantum efficiency and high current density

Active Publication Date: 2018-08-17
KUNMING INST OF PRECIOUS METALS
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Problems solved by technology

[0004] In view of the above analysis, the present invention aims to provide a deep blue light organic iridium (Ⅲ) complex OLED device preparation method to solve the traditional iridium (Ⅲ) blue light materials and devices with low quantum efficiency and red-shifted emission color problems

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  • A Deep Blue Light Organic Iridium(Ⅲ) Complex OLED Device

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Embodiment Construction

[0041] Preferred embodiments of the present invention will be specifically described below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the application and are used together with the embodiments of the present invention to explain the principles of the present invention.

[0042] Manufacturing and testing of OLED devices: The device preparation in this part is completed in the composite evaporation system manufactured by Shenyang Huiyu Vacuum Technology Co., Ltd. In the organic chamber, the organic materials are placed in different evaporation sources whose temperature can be controlled separately. During the evaporation process, the vacuum degree of the chamber is higher than 9×10 -5 Pa, successively vapor-deposit hole injection layer, hole transport layer, light emitting layer, hole blocking layer, electron transport layer on anodized indium tin oxide (ITO) glass, and finally transfer the substrate to the metal evaporat...

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Abstract

The invention discloses a deep blue organic iridium (Ⅲ) complex OLED device. The light-emitting layer is a light-emitting layer formed by doping DPEPO with an organic iridium (Ⅲ) complex with a structure of formula A. The traditional iridium (Ⅲ) blue light material And devices have problems such as low quantum efficiency, non-standard luminous color, and high excitation energy. The novel iridium (Ⅲ) complex phosphorescent material synthesized by the invention and the OLED device made thereof have good photoluminescence performance, high quantum yield, short excited state lifetime, and can realize standard deep blue light emission. The device has good electroluminescent performance, has the advantages of high external quantum efficiency, high luminous brightness, high current density, and low lighting voltage, and is close to the standard blue light color coordinates (0.14, 0.08). The prepared OLED device can be used in commercial OLEDs display and lighting fields.

Description

technical field [0001] The invention relates to the field of preparation of organic electroluminescence devices, in particular to an OLED device of deep blue light organic iridium (III) complexes. Background technique [0002] Iridium(III)-based organic light-emitting diode (OLED) technology has been widely concerned since it came out in 1999. A complete OLED device is like a sandwich burger. On the transparent conductive anode, the hole transport layer / luminescent layer / electron transport layer / metal cathode are deposited on the transparent conductive anode by thermal vacuum evaporation or spin coating. After the voltage is applied, the phenomenon of electroluminescence can appear. When the OLED device is working, electrons and holes are injected through the cathode and anode respectively, and they capture and recombine with each other in the light-emitting layer to form excitons, which convert the luminescence center from the ground state to the excited state, and the sin...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/50H01L51/54
CPCH10K85/00H10K85/342H10K50/11
Inventor 刘志伟常桥稳卞祖强晏彩先李晓悦赵子丰刘伟平
Owner KUNMING INST OF PRECIOUS METALS
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