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Laminated organic electroluminescent device based on single-layer light emitting units

A technology for electroluminescent devices and light-emitting units, which can be applied to electric solid devices, electrical components, semiconductor devices, etc., can solve the problems of complex structure of stacked organic electroluminescent devices, and reduce the influence of exciton quenching effect. Ensure carrier injection balance and high-efficiency light-emitting effect

Inactive Publication Date: 2014-04-16
JILIN UNIV
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Problems solved by technology

[0004] The present invention aims at the shortcomings of the complex structure of the laminated organic electroluminescent device, and provides a laminated organic electroluminescent device based on a single-layer organic light-emitting unit

Method used

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  • Laminated organic electroluminescent device based on single-layer light emitting units
  • Laminated organic electroluminescent device based on single-layer light emitting units
  • Laminated organic electroluminescent device based on single-layer light emitting units

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Embodiment 1

[0029] The preparation of organic light-emitting devices can be carried out in a multi-source organic molecular vapor deposition system. The detailed process is as follows:

[0030] [1] The substrate material in the experiment is ITO conductive glass. First, scrub the ITO glass substrate repeatedly with acetone and ethanol cotton balls;

[0031] [2] Put the scrubbed ITO substrate into a clean beaker and use acetone, ethanol, and deionized water to ultrasonicate for 10 minutes, then dry it in an oven, and finally UV-treat the dry and clean ITO glass substrate for 10 minutes. minute;

[0032] [3] Place the processed substrate in a multi-source organic molecule vapor deposition system (see Chinese patent: ZL03110977.2, "Pot-increasing evaporation source for organic electroluminescence coating machine"), the vacuum of the evaporation system The cavity includes an organic evaporation area (8 evaporation sources) and a metal evaporation area (3 evaporation sources), and the two ar...

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Abstract

The invention discloses a laminated organic electroluminescent device based on single-layer light emitting units, and belongs to the technical field of organic electroluminescent devices. The device is composed of a substrate, an anode, the single-layer organic light emitting units, electric charge generating layers and a cathode in sequence. The single-layer organic light emitting units and the electric charge generating layers are arranged alternately. The single-layer organic light emitting units are formed by doping organic luminescent dye in parent materials as dopant, organic materials with the high hole mobility are adopted as the parent materials of the light emitting units on odd layers, and organic materials with the high electronic mobility are adopted as the parent materials of the light emitting units on even layers. Due to the fact that the single-layer structure is adopted in the light emitting units, the number of the function layers of the laminated device is reduced, and the laminated device can be manufactured conveniently. In addition, due to the fact that the carrier transport polarity of the organic materials adopted by the electric charge generating layers is inconsistent with that of the parent materials of the adjacent single-layer light emitting units, it is guaranteed that the exciton recombination area of each light emitting unit is far away from the anode and the cathode, the exciton cancellation effect in a traditional single-layer device is weakened, and it is guaranteed that the laminated device of the structure has good performance.

Description

technical field [0001] The invention belongs to the technical field of organic electroluminescent devices, in particular to a laminated organic electroluminescent device based on a single-layer light-emitting unit. Background technique [0002] Due to its potential advantages in full-color display, liquid crystal backlight and solid-state lighting applications, organic electroluminescent devices have set off a research boom in the world in recent years. Organic electroluminescent technology has the advantages of low energy consumption, active light emission, wide viewing angle, fast response speed, flexible display, and low cost, making it promising to become a new generation of flat panel display technology. Research institutions and large companies are optimistic about using it as a new generation of solid-state lighting sources. [0003] The concept of stacked organic electroluminescent devices was first proposed by the Forrest research group of Princeton University. In ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/54
CPCH10K85/111H10K50/13H10K71/00
Inventor 陈平段羽薛凯文杨永强赵毅刘式墉
Owner JILIN UNIV
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