Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Light-emitting device and preparation method thereof

A technology for light-emitting devices and light-emitting layers, which can be used in the manufacture of semiconductor/solid-state devices, electric solid-state devices, semiconductor devices, etc., and can solve problems such as low luminous efficiency of devices.

Inactive Publication Date: 2021-07-16
TCL CORPORATION
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a light-emitting device, which aims to solve the problem of low luminous efficiency of the device in existing light-emitting devices due to the existence of more oxygen vacancy defects on the surface of titanium dioxide nanoparticles

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
  • Light-emitting device and preparation method thereof
  • Light-emitting device and preparation method thereof
  • Light-emitting device and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0045] Correspondingly, a method for preparing a light-emitting device includes the following steps of preparing a composite material layer:

[0046] S01. Depositing the composite material on the substrate to form a composite material layer;

[0047] Wherein, the composite material includes: titanium dioxide nanoparticles and a ligand as shown in formula I, and the ligand is connected to the titanium dioxide nanoparticles by a sulfur anion;

[0048]

[0049] Wherein, n is an integer between 0 and 8.

[0050] In the method for preparing a light-emitting device provided in the embodiments of the present invention, a composite material is deposited on a substrate to form a composite material layer, and the material of the composite material layer includes: titanium dioxide nanoparticles and a ligand as shown in formula I, and the ligand is composed of sulfide anion and Titanium dioxide nanoparticle connections. The ligand shown in formula I has sulfur anion, amino group and ...

Embodiment approach

[0066] As an implementation manner, the matrix includes: a second electrode, a titanium dioxide layer is formed on the second electrode, and the composite material is formed on the titanium dioxide layer. In some embodiments, the light-emitting device uses the second electrode as the bottom electrode, and the matrix includes: the second electrode, and a titanium dioxide layer is formed on the second electrode. In some embodiments, the second electrode is ITO conductive glass. Before being used to prepare the light-emitting device, the ITO conductive glass is pre-treated, including: first cleaning the ITO, dipping a small amount of soapy water with a cotton swab to wipe the surface of the ITO to remove impurities visible to the naked eye on the surface, and then using deionized water , acetone, ethanol, and isopropanol for ultrasonic cleaning for 15 minutes, and then blow dry with nitrogen for use.

[0067] In addition to the above step of preparing the composite material laye...

Embodiment 1

[0070] In this embodiment, a light-emitting device is prepared, which specifically includes the following steps:

[0071] First, clean the ITO. Wipe the surface of the ITO with a cotton swab dipped in a small amount of soapy water to remove visible impurities on the surface, then ultrasonically clean it with deionized water, acetone, ethanol, and isopropanol for 15 minutes, and then dry it with nitrogen gas for use.

[0072] Next, prepare 200 mL of ice-water mixture, add 0.1 mol of TiCl 4 Add it, and the adding process should be slow to prevent its hydrolysis too fast; then prepare 10mL of methionine ethanol solution, and its concentration is controlled at 200 moles per liter; then, slowly drop the methionine ethanol solution into TiCl previously prepared 4 In the solution, stir while adding it dropwise. After stirring evenly, pour the solution into the hydrothermal reaction kettle, and slowly put the previously cleaned ITO glass into the hydrothermal reaction kettle, with th...

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
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of display, and particularly relates to a light-emitting device and a preparation method thereof. The light-emitting device provided by the invention comprises a first electrode and a second electrode which are oppositely arranged, a light-emitting layer arranged between the first electrode and the second electrode, and a composite material layer arranged between the second electrode and the light-emitting layer. Materials for forming the composite material layer comprise titanium dioxide nanoparticles and a ligand as shown in a formula I, the ligand is connected with the titanium dioxide nanoparticles through sulfur anions, and n is an integer between 0 and 8. The light-emitting device has the advantages of good stability, high light-emitting performance, high carrier transmission efficiency and the like, can be applied to the fields of light-emitting diodes, fluorescent powder, photoelectric display and the like, and has great potential commercial value.

Description

technical field [0001] The invention belongs to the field of display technology, and in particular relates to a light-emitting device and a preparation method thereof. Background technique [0002] In recent years, perovskite quantum dot materials have received more and more attention because of their advantages such as long carrier diffusion length, high absorption coefficient, suitable bandgap width, and low exciton binding energy. Often used in the preparation of light-emitting devices. In light-emitting devices that use perovskite quantum dot materials as the light-emitting layer material, the electron transport layer plays an extremely important role. It can not only form an electron-selective contact with the light-emitting layer, thereby improving the extraction efficiency of carriers and acting as electron transport layer. A carrier that flows to the cathode, and can also be used as a barrier layer to block the return flow of holes, thereby improving the efficiency ...

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): H01L51/54H01L51/50H01L51/56
CPCH10K85/30H10K50/165H10K2102/101H10K50/115H01L33/14H10K2102/331H10K50/125H10K30/151H10K71/00H10K2102/102H10K2102/103
Inventor 黄盼宁卢子哲
Owner TCL CORPORATION
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com