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

a tb 3+ A new type of phosphor doped with gadolinium aluminum garnet

A technology of gadolinium aluminum garnet and fluorescent powder, which is applied in the field of fluorescent powder and its preparation, can solve the problems of low energy conversion efficiency, uneven product particle size, and low luminous intensity

Inactive Publication Date: 2017-12-12
UNIV OF JINAN
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the continuous update of photoluminescent materials and the popularization and development of LED technology, the traditional LED light source has gradually been unable to meet the growing needs of people.
[0003] Currently widely used YAG (Y 3 al 5 o 12 ) phosphor powder (such as YAG: Tb 3+ Phosphor powder), there are problems such as low energy conversion efficiency, low luminous intensity, uneven product particle size, etc., thus limiting the development of LED technology

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
  • a tb <sup>3+</sup> A new type of phosphor doped with gadolinium aluminum garnet
  • a tb <sup>3+</sup> A new type of phosphor doped with gadolinium aluminum garnet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] a Tb 3+ Doped gadolinium aluminum garnet novel fluorescent powder, the preparation method is as follows:

[0018] Raw materials used: Gd 2 o 3 (99.99%), Tb 4 o 7 (99.99%), Al(NO 3 ) 3 9H 2 O (99.0%), NH 4 HCO 3 (99.0%), nitric acid (HNO 3 , 68%);

[0019] (1) Powdered Gd 2 o 3 and Tb 4 o 7 respectively dissolved in hot nitric acid to remove excess HNO 3 Dubbed rare earth nitrate solution;

[0020] (2) Press Gd 3+ :Tb 3+ :Al 3+ Molar ratio 2.7: 0.3: 5 to measure rare earth nitrate, Al(NO 3 ) 3 Solution, add deionized water to make a solution with a volume of 100mL, stir for 30min, so that the mother salt solution is evenly mixed;

[0021] (3) Weigh an appropriate amount of NH 4 HCO 3 Dissolve in deionized water, place in a constant temperature water bath, adjust the temperature to 25°C and stir until NH 4 HCO 3 dissolve;

[0022] (4) Pour the mixture obtained in step (2) into a pear-shaped funnel, and drop the mother salt solution into NH at a r...

Embodiment 2

[0026] A novel garnet-based high-efficiency green fluorescent powder, the preparation method of which is as follows:

[0027] Raw materials used: Gd 2 o 3 (99.99%), Tb 4 o 7 (99.99%), Al(NO 3 ) 3 9H 2 O (99.0%), NH 4 HCO 3 (99.0%), nitric acid (HNO 3 , 68%);

[0028] (1) Powdered Gd 2 o 3 and Tb 4 o 7 respectively dissolved in hot nitric acid to remove excess HNO 3 Dubbed rare earth nitrate solution;

[0029] (2) Press Gd 3+ :Tb 3+ :Al 3+ Molar ratio 2.7: 0.3: 5 to measure rare earth nitrate, Al(NO 3 ) 3 Solution, add deionized water to make a solution with a volume of 100mL, stir for 30min, so that the mother salt solution is evenly mixed;

[0030] (3) Weigh an appropriate amount of NH 4 HCO 3 Dissolve in deionized water, place in a constant temperature water bath, adjust the temperature to 25°C and stir until NH 4 HCO 3 dissolve;

[0031] (4) Pour the mixture obtained in step (2) into a pear-shaped funnel, and drop the mother salt solution into NH at...

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 discloses a Tb 3+ A novel phosphor doped with gadolinium aluminum garnet, whose chemical composition formula is (Gd 0.9 Tb 0.1 ) 3 Al 5 o 12 (GdAG:Tb 3+ ). The synthesis method of this phosphor powder is based on rare earth nitrate and Al(NO 3 ) 3 The solution is mixed stoichiometrically as a mother salt solution, with NH 4 HCO 3 As a precipitating agent, the suspension is obtained by reverse homogeneous precipitation. On this basis, the white precursor powder was obtained by centrifugation, washing, and drying, and finally calcined to obtain GdAG:Tb 3+ New Phosphor. The fluorescent powder prepared by the invention has excellent fluorescence performance, and is expected to become a new generation of lighting display materials.

Description

technical field [0001] The invention relates to a fluorescent powder used in the fields of illumination and display and a preparation method thereof. Background technique [0002] As a new type of green cold light source, light-emitting diode (LED) has the advantages of small size, high luminous intensity, low power consumption and long life, and is widely used in many fields such as lighting, display and traffic lights. With the continuous update of photoluminescent materials and the popularization and development of LED technology, the traditional LED light source has gradually been unable to meet the growing needs of people. [0003] Currently widely used YAG (Y 3 Al 5 o 12 ) phosphor powder (such as YAG: Tb 3+ Phosphor powder), there are problems such as low energy conversion efficiency, low luminous intensity, uneven product particle size, etc., thus limiting the development of LED technology. Therefore, it is of great significance to develop a new type of high-qua...

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 Patents(China)
IPC IPC(8): C09K11/80
Inventor 李金凯滕鑫刘宗明段广彬
Owner UNIV OF JINAN
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