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

Europium-erbium co-doped yttrium oxysulfide luminescent material as well as preparation method and application thereof

A technology of yttrium oxysulfide and luminescent materials, applied in the directions of luminescent materials, chemical instruments and methods, semiconductor devices, etc.

Inactive Publication Date: 2013-09-11
OCEANS KING LIGHTING SCI&TECH CO LTD +1
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of electroluminescent thin films with yttrium oxysulfide-based luminescent materials has not been reported so far.

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
  • Europium-erbium co-doped yttrium oxysulfide luminescent material as well as preparation method and application thereof
  • Europium-erbium co-doped yttrium oxysulfide luminescent material as well as preparation method and application thereof
  • Europium-erbium co-doped yttrium oxysulfide luminescent material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A method for preparing a thin film electroluminescent display device, comprising the following steps:

[0037] (1) Preparation of luminescent material: take Y with a purity of 99.99% 2 o 3 , sulfur powder, Eu 2 o 3 and Er 2 o 3 Powder, the molar ratio is 1:1.5:0.02:0.03 (ie Y 2 o 2 S:xEu 3+ ,yEr 3+ , x value is 0.02, y value is 0.03) after uniform mixing, sintering at 1250°C to make a luminescent material of Φ50×2mm;

[0038] (2) Prepare the substrate: take the glass substrate with ITO, and use acetone, absolute ethanol and deionized water to carry out ultrasonic cleaning on the glass substrate with ITO in sequence, then perform oxygen plasma treatment, and dry to obtain a clean Substrate;

[0039] (3) Coating: According to the pulse laser deposition method, install the luminescent material and the clean substrate in the vacuum chamber of the pulse laser system, the distance between the luminescent material and the substrate is 60mm, and then use a mechanical ...

Embodiment 2

[0046] A method for preparing a thin film electroluminescent display device, comprising the following steps:

[0047] (1) Preparation of luminescent material: take Y with a purity of 99.99% 2 o 3 , sulfur powder, Eu 2 o 3 and Er 2 o 3 Powder, the molar ratio is 1:1.5:0.01:0.01 (ie Y 2 o 2 S:xEu 3+ ,yEr 3+ , x value is 0.01, y value is 0.01) after uniform mixing, sintering at 900°C to make a luminescent material of Φ50×2mm;

[0048] (2) Preparation of substrate: Take the glass substrate with ITO, and use acetone, absolute ethanol and deionized water to carry out ultrasonic cleaning on the glass substrate with ITO transparent conductive film in sequence, then perform oxygen plasma treatment, dry, and prepare a clean substrate;

[0049] (3) Coating: According to the pulse laser deposition method, install the luminescent material and the clean substrate in the vacuum chamber of the pulse laser system, the distance between the luminescent material and the substrate is 45m...

Embodiment 3

[0053] A method for preparing a thin film electroluminescent display device, comprising the following steps:

[0054] (1) Preparation of luminescent material: take Y with a purity of 99.99% 2 o 3 , sulfur powder, Eu 2 o 3 and Er 2 o 3 Powder, the molar ratio is 1:1.5:0.05:0.06 (ie Y 2 o 2 S:xEu 3+ ,yEr 3+ , x value is 0.05, y value is 0.06) after uniform mixing, sintering at 1300°C to make a luminescent material of Φ50×2mm;

[0055] (2) Prepare the substrate: take the glass substrate with ITO, and use acetone, absolute ethanol and deionized water to carry out ultrasonic cleaning on the glass substrate with ITO transparent conductive film in sequence, then perform oxygen plasma treatment, dry, and prepare a clean substrate;

[0056] (3) Coating: According to the pulse laser deposition method, install the luminescent material and the clean substrate in the vacuum chamber of the pulse laser system, the distance between the luminescent material and the substrate is 95mm,...

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 europium-erbium co-doped yttrium oxysulfide luminescent material, a luminescent film, a film electroluminescent display device as well as preparation methods thereof. The europium-erbium co-doped yttrium oxysulfide luminescent material has a chemical structural formula of Y2O2S:xEu<3+>, yEr<3+>, wherein Y2O2S is a matrix, Eu<3+> and Er<3+> ions are activated elements, the value of x is 0.01-0.05, and the value of y is 0.01-0.06. The europium-erbium co-doped yttrium oxysulfide luminescent material can be used preparing a europium-erbium co-doped yttrium oxysulfide luminescent film. The europium-erbium co-doped yttrium oxysulfide luminescent film can be used for preparing the film electroluminescent display device. The electroluminescent spectrum of the europium-erbium co-doped yttrium oxysulfide luminescent film has strong photoluminescence peaks around 490nm and 580nm.

Description

technical field [0001] The invention belongs to the field of electroluminescent materials, in particular to europium-erbium double-doped yttrium oxysulfide light-emitting materials, light-emitting thin films, thin-film electroluminescent display devices and their preparation methods. Background technique [0002] Thin film electroluminescent display (TFELD) has attracted widespread attention and developed rapidly because of its advantages such as active light emission, full solid state, impact resistance, fast response, large viewing angle, wide application temperature and simple process. At present, the research and development of color and even full-color TFELD (development of multi-band luminescent materials) is an important development direction in this field. [0003] In the research of LED phosphors, there have been reports of rare earth-doped yttrium oxysulfide phosphors, whose excitation spectrum can better match the emission spectrum of existing near-ultraviolet LED...

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): C09K11/84H01L33/50H01L33/00
Inventor 周明杰王平陈吉星黄辉
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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