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Red-light thermal activation delayed fluorescent material, preparation method thereof and organic light emitting diode (OLED) device

A heat-activated delay and light-emitting diode technology, applied to organic semiconductor devices, light-emitting materials, chemical instruments and methods, etc.

Active Publication Date: 2019-03-29
WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the heavy metals commonly used are noble metals such as Ir and Pt, and the phosphorescent light-emitting materials of heavy metal complexes have yet to make breakthroughs in red light materials.

Method used

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  • Red-light thermal activation delayed fluorescent material, preparation method thereof and organic light emitting diode (OLED) device
  • Red-light thermal activation delayed fluorescent material, preparation method thereof and organic light emitting diode (OLED) device
  • Red-light thermal activation delayed fluorescent material, preparation method thereof and organic light emitting diode (OLED) device

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Embodiment Construction

[0033] The following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the present invention can be practiced. Furthermore, the directional terms mentioned in the present invention are, for example, up, down, top, bottom, front, back, left, right, inside, outside, side, surrounding, central, horizontal, transverse, vertical, longitudinal, axial, The radial direction, the uppermost layer or the lowermost layer, etc. are only directions referring to the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention.

[0034] The present invention provides a red light thermally activated delayed fluorescent material, characterized in that: the red light thermally activated delayed fluorescent material has the following structure:

[0035]

[0036] where X 1 and x 2 independently selected from isobutyl, methoxy or ...

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Abstract

The invention discloses a red-light thermal activation delayed fluorescent material, a preparation method thereof and an organic light emitting diode (OLED) device. The OLED device comprises a luminescent material layer, wherein the luminescent material layer comprises the red-light thermal activation delayed fluorescent material. The red-light thermal activation delayed fluorescent material has aspecific molecular structure. The OLED device has the maximum brightness of 1,465cd / m<2> to 1,587cd / m<2> and the maximum current efficiency of 27.3cd / A to 29.1cd / A.

Description

technical field [0001] The present invention relates to a red light thermally activated delayed fluorescent material, its preparation method and an organic light-emitting diode (OLED) device, in particular to a red light thermally activated delayed fluorescent material with high efficiency, its preparation method and organic light-emitting diode (OLED) device. light emitting diode devices. Background technique [0002] Organic light-emitting diodes (organic light-emitting diode, OLED) have active light emission without backlight, high luminous efficiency, large viewing angle, fast response speed, wide temperature range, relatively simple production and processing technology, low driving voltage, Due to the advantages of low energy consumption, light and thin structure, and flexible display, it has great application prospects and has attracted the attention of many researchers. [0003] In OLEDs, the dominant light-emitting guest material is the most important. The luminesc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D471/14C09K11/06H01L51/50H01L51/52H01L51/54
CPCC09K11/06C07D471/14C09K2211/1029C09K2211/1033H10K85/6572H10K85/657H10K50/15H10K50/16H10K50/11H10K50/805H10K2102/00H10K2101/20C09K2211/1062H10K2101/10
Inventor 罗佳佳杨林白亚梅
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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