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

Molybdate matrix up-conversion luminescence fluorescent powder and preparation method thereof

A fluorescent powder, molybdate technology, applied in the field of fluorescent powder

Inactive Publication Date: 2014-02-12
OCEANS KING LIGHTING SCI&TECH CO LTD +1
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still few reports on the field of preparing phosphors and applying them to OLEDs.

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
  • Molybdate matrix up-conversion luminescence fluorescent powder and preparation method thereof
  • Molybdate matrix up-conversion luminescence fluorescent powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0022] The preparation method of the molybdate matrix up-conversion luminescent phosphor, such as figure 1 , including the following steps:

[0023] S1, according to the molecular formula Me 1-x-y MoO 4 :xTb 3+ ,yHo 3+ The stoichiometric ratio of each element in, weigh MeO, MoO 3 , Tb 2 o 3 and Ho 2 o 3 Soluble in nitric acid, configured as total cation (ie Mg 2+ 、Mo 6+ , Tb 3+ and Ho 3+ ) is a nitric acid solution of 0.5-3 mol / L, then adding polyethylene glycol with a concentration of 0.005-0.05 mol / L as a dispersant to the nitric acid solution, and stirring to obtain a precursor solution;

[0024] S2. Lead the precursor solution into the atomizer of the spray dryer, and set the inlet temperature of the atomizer to 150-220°C and the outlet temperature to 100-130°C;

[0025] S3. Pass an inert gas (such as at least one of argon and nitrogen) or a reducing gas into the atomizer, and control the gas flow rate at 1~15L / min, so that the precursor solution starts to be ...

Embodiment 1

[0036] Weigh MgO, MoO 3 ,Tb 2 o 3 and Ho 2 o 3 The powder, the molar ratio of which is 0.96:1:0.015:0.005, is dissolved in nitric acid to prepare a nitric acid solution with a total cation of 1.5mol / L, and 0.01mol / L polyethylene glycol is added to the nitric acid solution as a dispersant , to obtain the precursor solution.

[0037] Then, put the precursor solution into the atomizer of the spray dryer, the inlet temperature is 180°C, and the outlet temperature is 110°C.

[0038] Subsequently, 5 L / min of argon gas is introduced into the atomizer, and the precursor solution enters the quartz reaction chamber with the argon carrier gas, and the phosphor precursor is generated in the reaction chamber; the phosphor precursor enters the condenser with the airflow, Finally, it is collected by a microporous acid-resistant filter funnel to obtain a fluorescent powder sample.

[0039] Finally, the phosphor powder sample was calcined in a temperature-programmed furnace for 3 hours a...

Embodiment 2

[0041] Weigh MgO, MoO 3 ,Tb 2 o 3 and Ho 2 o 3 The powder, whose molar ratio is 0.9:1:0.03:0.02, is dissolved in nitric acid to prepare a nitric acid solution with a total cation of 3mol / L, and 0.05mol / L polyethylene glycol is added to the nitric acid solution as a dispersant, Obtain the precursor solution.

[0042] Then, put the precursor solution into the atomizer of the spray dryer, the inlet temperature is 220°C, and the outlet temperature is 130°C.

[0043] Subsequently, nitrogen gas of 15 L / min is introduced into the atomizer, and the precursor solution enters the quartz reaction chamber with the nitrogen carrier gas, and the phosphor precursor is generated in the reaction chamber, and the phosphor precursor enters the condenser with the air flow, and is finally Microporous acid-resistant filter funnel collected to obtain phosphor samples.

[0044] Finally, the phosphor powder sample was calcined in a temperature-programmed furnace for 5 hours at a temperature of 1...

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 belongs to the field of fluorescent powder, and discloses a molybdate matrix up-conversion luminescence fluorescent powder and a preparation method thereof. The fluorescence has a molecular formula: Me<1-x-y>MoO4:xTb<3+>,yHo<3+>, wherein Tb<3+> is an activating ion, Ho<3+> is a sensitizing ion, x is in a value range of 0.002 to 0.06, and y is in a value range of 0.002 to 0.04. The molybdate matrix up-conversion luminescence fluorescent powder provided by the invention belongs to terbium and holmium co-doped Me<1-x-y>MoO4:xTb<3+>,yHo<3+> up-conversion fluorescent powder; the fluorescent powder can achieved a long-wavelength irradiation from the infrared zone to the green light zone, and the obtained 485 nm of luminescent peak corresponds to the transition irradiation luminescence given off by Tb<3+> ions which transit from 5D4 to 7H6.

Description

technical field [0001] The invention relates to the field of fluorescent powder, in particular to a molybdate matrix up-conversion luminescent fluorescent powder and a preparation method thereof. Background technique [0002] The full name of OLED is Organic Light Emitting Diode, organic light emitting diode. It has many advantages. Its component structure is simple, its production cost is cheap, and its self-luminous characteristics, coupled with OLED's short response time and bendable characteristics, make it a very wide range of applications. However, it is difficult to obtain stable and efficient OLED blue light materials, which greatly limits the development of white light OLED devices and light source industries. [0003] Up-conversion fluorescent materials can emit visible light and even ultraviolet light under the excitation of long-wave (such as infrared) radiation, and have broad application prospects in the fields of optical fiber communication technology, fiber ...

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): C09K11/68
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