Preparation method of white light OLED

A white light and ITO technology, applied in the field of white light OLED preparation, can solve the problems of poor repeatability, high cost, complex preparation process, etc., and achieve the effects of easy ratio, low cost and simple process

Inactive Publication Date: 2010-11-03
SHAANXI UNIV OF SCI & TECH
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation process of this kind of device is complicated, the repeatability is poor, and the cost is high.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of white light OLED

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] The preparation method of the white light OLED of the present invention includes the following steps: Step 1: Clean the ITO glass with trichlorethylene, acetone, absolute ethanol and distilled water in an ultrasonic cleaning machine, then transfer it to a drying box, and dry it at 150°C 30 minutes; step 2: transfer the ITO glass treated in step 1 to the coating machine, and bombard the surface of the ITO glass with oxygen plasma; step 3: take the material 2T-NATA for the electron blocking layer and NPB for the hole transport layer , ADN, TBPE and DCJTB materials for light-emitting layer, Alq materials for electron transport layer 3 Put into the coating machine together with the ITO glass that step 2 has processed with material liF and aluminum for the cathode layer, in a vacuum degree of 10 -4 Evaporate under the condition of Pa, that is, first heat the material for the electron blocking layer and the material for the hole transport layer to volatilize in order, thereby...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention provides a preparation method of a white light OLED, which comprises the following steps: firstly, cleaning and drying ITO glass, and then, carrying out plasma bombardment pretreatment; then, transferring the ITO glass after treatment into a film plating machine; and simultaneously, sequentially transferring materials for an electronic blocking layer, materials for a hole transport layer, materials for a light-emitting layer, materials for an electron transfer layer and materials for a cathode layer into the film plating machine for evaporating. The evaporating process of the light-emitting layer comprises the following steps: firstly, carrying out double-source co-evaporation on a main material and a blue doping agent, wherein the ratio of the blue doping agent is 2%; and finally, carrying out three-source co-evaporation on the main material, the blue doping agent and a red doping agent, wherein the ratio of the blue doping agent is 2%, and the ratio of the red doping agent is 6%. In the invention, only red and blue doping materials are doped in the main material of the light-emitting layer, thus the doping ratio can be controlled easily, and the white light emitted a the prepared device is uniform; and the invention has the advantages of simple process and low cost.

Description

technical field [0001] The invention relates to a light source package, in particular to a preparation method of a white light OLED. Background technique [0002] Since the discovery of organic monocrystalline anthracene in 1963, organic electroluminescent devices (OLEDs) have been extensively studied. Among them, white organic electroluminescent devices (WOLEDs) have attracted widespread attention due to their low driving voltage, high efficiency, low power consumption, simple preparation process, and wide range of raw material sources. [0003] The current WOLED can be divided into two types of structures: single-emitting layer and multi-emitting layer. Among them, the preparation method of the single light-emitting layer structure is mainly in the following two ways, one is to choose a fluorescent material that can cover the entire visible light range as the light-emitting layer, and the WOLED prepared by this method has a simple structure and is easy to manufacture. How...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/56
Inventor 马颖张方辉牟强张麦丽蒋谦刘丁菡
Owner SHAANXI UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap