Unlock instant, AI-driven research and patent intelligence for your innovation.

White light area source electroluminescence device and preparation method thereof

An electroluminescent device and white light surface technology, which is applied in the fields of electro-solid devices, semiconductor/solid-state device manufacturing, electrical components, etc., can solve the problems of difficulty in precise process control and industrialized production, etc., and achieves a simple preparation method and a structure. Simplified, rich types of effects

Inactive Publication Date: 2013-07-31
SHAANXI UNIV OF SCI & TECH
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The light-emitting layer of the existing white organic electroluminescent device mainly uses different doped monochromatic light-emitting layers (such as blue and yellow primary colors or red, green and blue three primary colors and other multi-primary colors) to superimpose or the same light-emitting layer is doped with different monochromatic dyes to emit mixed colors. Monochromatic white light, but the doping process is difficult to precisely control, and it is difficult to carry out industrial production

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
  • White light area source electroluminescence device and preparation method thereof
  • White light area source electroluminescence device and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023] The preparation method of the electroluminescent device of the above-mentioned white surface light source comprises the following steps:

[0024] Etch the ITO glass substrate, ultrasonically clean the etched ITO glass substrate with acetone and absolute ethanol in an ultrasonic cleaning machine, and the ultrasonic cleaning time is 15-20 minutes; then spin-coat PEDOT on the ITO glass substrate :PSS solution, then place the ITO glass substrate in a vacuum constant temperature drying oven to dry, and form a PEDOT:PSS film layer on the ITO glass substrate after drying until the solvent is removed; spin-coat the MEH:PPV solution on the PEDOT:PSS film layer , and then put the ITO glass substrate into a vacuum constant temperature drying oven for heat treatment, the temperature of the heat treatment is 145-200 ° C, the time of the heat treatment is 1-2 hours, and the luminescent layer is formed on the ITO glass substrate through the heat treatment; after the heat treatment, the...

Embodiment

[0027] see figure 1 , a novel surface light source electroluminescent device, including an anode and a light-emitting layer arranged on the anode, the light-emitting layer is provided with a cathode, wherein the anode is an ITO glass substrate, and the light-emitting layer is a macromolecular organic material PEDOT:PSS and MEHPPV The new light-emitting body formed after heat treatment, the cathode is calcium aluminum alloy (Ca:Al).

[0028] The preparation method of the device is as follows: the etched ITO glass substrate is ultrasonically cleaned with an organic solvent, and then the organic macromolecular materials PEDOT:PSS and MEH:PPV are sequentially coated on the cleaned ITO glass substrate by a spin coating process. , and then put it into a vacuum constant temperature drying oven for heat treatment, and then put it into a vacuum evaporation machine to prepare a calcium-aluminum alloy cathode in a high vacuum environment. Specific steps are as follows:

[0029] 1) Etch...

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

No PUM Login to View More

Abstract

The invention provides a white light area source electroluminescence device and a preparation method thereof. The method comprises the steps that a luminescent layer is coated on an ITO (Indium Tin Oxide) substrate in a spin coating manner by using a spin coating technology of a high-molecular organic electroluminescence device, and a cathode is evaporated on the luminescent layer by using a vacuum evaporation technique of a small-molecular organic electroluminescence device, wherein the luminescent layer is made of a new material prepared by an organic high-molecular material. The white light area source electroluminescence device can emit white light, is a novel area source electroluminescence device, and enriches the category of the area source electroluminescence device.

Description

technical field [0001] The invention relates to an electroluminescence device of a white light surface light source. Background technique [0002] Organic electroluminescence (OLE) refers to the phenomenon that organic materials emit light under the excitation of electric current or electric field. According to the different organic electroluminescent materials used, people sometimes refer to devices made of organic small molecules as light-emitting materials as organic electroluminescent devices, OLED for short, and devices made of polymers as electroluminescent materials. The device is called a polymer electroluminescent device, or PLED for short. However, the two are generally referred to as organic electroluminescent devices, also referred to as OLEDs. Its structure is generally a sandwich structure, that is, one or more layers of organic thin films are sandwiched between the metal cathode and the transparent anode. After a certain voltage is applied between the elect...

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): H01L51/50H01L51/56
Inventor 张方辉张微黄晋孙立蓉马颖张麦丽
Owner SHAANXI UNIV OF SCI & TECH