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Method for changing exciton distribution in organic light-emitting diode

A luminescence and diode technology, applied in the field of organic semiconductor electronic materials, can solve problems such as luminescence imbalance, achieve the effect of increasing hole concentration and changing the distribution of excitons

Inactive Publication Date: 2015-08-12
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This non-uniform distribution can cause problems, especially in organic electroluminescent diodes that utilize ultra-thin undoped light-emitting layers.

Method used

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  • Method for changing exciton distribution in organic light-emitting diode
  • Method for changing exciton distribution in organic light-emitting diode
  • Method for changing exciton distribution in organic light-emitting diode

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Embodiment Construction

[0024] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. This embodiment is implemented under the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the embodiment.

[0025] In this embodiment, mCP is used as the host material in the organic electroluminescent diode, TAPC is used as the ultra-thin insertion layer material, and the organic electroluminescent diode adopts an ultra-thin non-doped light-emitting layer structure.

[0026] figure 1It is a principle diagram of the present invention. Among them, mCP is used as the main material of the organic electroluminescent diode, and TAPC is used as the ultra-thin intercalation layer material; the highest occupied orbital (HOMO) energy level of the ultra-thin intercalation layer material TA...

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Abstract

The invention discloses a method for changing exciton distribution in an organic light-emitting diode, which is characterized by using a material whose highest occupied molecular orbit (HOMO) energy level is higher than the HOMO energy level of a main body material or a material whose lowest unoccupied molecular orbit (LUMO) energy level is lower than the LUMO energy level of the main body material to act as an ultrathin non-doped luminescent layer, and the material is inserted into the main body material so as to play a role of capturing a large number of current carriers, thereby changing exciton distribution in the organic light-emitting diode. The main body material comprises an electron-transporting main body material and a hole-transporting main body material. The ultrathin non-doped luminescent layer mainly comprises the electron-transporting material and the hole-transporting material. The method disclosed by the invention can change exciton distribution in the organic light-emitting diode simply and effectively, and particularly has very ideal effects in the aspect of changing a light-emitting weight of the ultrathin non-doped luminescent layer based organic light-emitting diode.

Description

technical field [0001] The invention relates to the field of organic semiconductor electronic materials, in particular to a method for changing the distribution of excitons in an organic electroluminescent diode. Background technique [0002] Organic Light-Emitting Diodes (Organic Light-Emitting Diodes, OLED) is a booming and promising display technology, which is regarded as the future of display technology. Due to its excellent characteristics, such as self-illumination, wide viewing angle, wide color gamut, fast response, potential for making flexible devices and low cost, organic electroluminescent diodes have increasingly become the focus of research in the display industry, and have been After years of technological innovation, organic light-emitting diode products have achieved mass production, covering large, medium and small-sized electronic consumer products. [0003] The working principle of organic electroluminescent diodes is that electrons and holes are inject...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/54H01L51/56
CPCH10K50/131H10K50/11H10K2101/40H10K50/15H10K50/16H10K50/17H10K50/171H10K71/00
Inventor 谭特欧阳世宏谢应涛王东平朱大龙方汉铿
Owner SHANGHAI JIAO TONG UNIV
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