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

Upconversion fluorescent powder on thulium-ytterbium co-doping zirconium-gallium sulphide and preparation method of upconversion fluorescent powder

A fluorescent powder, co-doping technology, applied in the field of fluorescent powder

Inactive Publication Date: 2015-09-23
OCEANS KING LIGHTING SCI&TECH CO LTD +2
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
  • Upconversion fluorescent powder on thulium-ytterbium co-doping zirconium-gallium sulphide and preparation method of upconversion fluorescent powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: Weigh ZrS, Ga 2 S 3 , Li 2 S, Tm 2 S 3 and Yb 2 S 3 The powder, whose molar ratio is 0.7:0.2:0.05:0.015:0.01, is dissolved in hydrochloric acid HCl to prepare a 1.5mol / L solution, and 0.01mol / L polyethylene glycol is added as a dispersant. Then the precursor solution is introduced into the atomizer of the spray dryer for spray drying. The inlet temperature was set at 180° C., the outlet temperature was set at 110° C., and 5 L / min of argon gas was fed into the atomizing device. The solution precursor starts to atomize into an aerosol, and enters the reaction system with the incoming gas, where the phosphor precursor is generated in the reaction system. Collect the precursor of the phosphor powder, place it in a temperature-programmed furnace and calcinate it for 3 hours at a temperature of 1100°C to obtain 0.7ZrS-0.2Ga 2 S 3 -0.05Li 2 S: 0.03Tm 3+ , 0.01Yb 3+ Up-converting phosphors.

[0022] figure 1 The photoluminescence spectrum of the thul...

Embodiment 2

[0023] Embodiment 2: take by weighing ZrS, Ga 2 S 3 , Li 2 S, Tm 2 S 3 and Yb 2 S 3 The powder, whose molar ratio is 0.8:0.12:0.06:0.005:0.005, is dissolved in hydrochloric acid HCl to prepare a 3mol / L solution, and 0.05mol / L polyethylene glycol is added as a dispersant. Then the precursor solution is introduced into the atomizer of the spray dryer for spray drying. The inlet temperature was set at 220° C., the outlet temperature was set at 130° C., and 15 L / min of argon gas was fed into the atomization device. The solution precursor starts to atomize into an aerosol, and enters the reaction system with the incoming gas, where the phosphor precursor is generated in the reaction system. Collect the precursor of the phosphor powder, place it in a temperature-programmed furnace and calcinate it for 5 hours at a temperature of 1300°C to obtain 0.8ZrS-0.12Ga 2 S 3 -0.06Li 2 S: 0.01Tm 3+ , 0.01Yb 3+ Up-converting phosphors.

Embodiment 3

[0024] Embodiment 3: take by weighing ZrS, Ga 2 S 3 , Li 2 S, Tm 2 S 3 and Yb 2 S 3The powder, whose molar ratio is 0.57:0.3:0.03:0.03:0.02, is dissolved in hydrochloric acid HCl to prepare a 0.5mol / L solution, and 0.005mol / L polyethylene glycol is added as a dispersant. Then the precursor solution is introduced into the atomizer of the spray dryer for spray drying. The inlet temperature was set to 150°C, the outlet temperature was set to 100°C, and 1 L / min of argon gas was fed into the atomization device. The solution precursor starts to atomize into an aerosol, and enters the reaction system with the incoming gas, where the phosphor precursor is generated in the reaction system. Collect the precursor of the phosphor powder, place it in a temperature-programmed furnace and calcinate it for 2 hours at a temperature of 600°C to obtain 0.57ZrS-0.3Ga 2 S 3 -0.03Li 2 S: 0.06Tm 3+ , 0.04Yb 3+ Up-converting phosphors.

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 upconversion fluorescent powder on thulium-ytterbium co-doping zirconium-gallium sulphide and a preparation method of the upconversion fluorescent powder. The structural general formula of the fluorescent powder is aZrS-bGa2S3-cR2S: xTm3+ and yYb3+, wherein the aZrS-bGa2S3-cR2S is a substrate, and the Tm3+ and the Yb3+ are doping and activating elements which are used as luminous ion centers in films; the numerical value of a is in 0.1-0.8, the numerical value of b is in 0.12-0.3, the numerical value of c is in 0.03-0.06, the numerical value of x is 0.01-0.06, and the numerical value of y is 0.01-0.04. The upconversion fluorescent powder of the thulium-ytterbium co-doping zirconium-gallium sulphide, disclosed by the invention, can realize longwave radiation excitation from infrared light to green light, and the obtained emission peaks of 454nm and 476nm respectively correspond to transition radiation emission of Tm3+ ion 1G4 to 3H6.

Description

technical field [0001] The invention relates to the field of fluorescent powder, in particular to a thulium-ytterbium co-doped zirconium-gallium sulfide up-conversion 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 communic...

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
IPC IPC(8): C09K11/67
Inventor 周明杰陈吉星王平张振华
Owner OCEANS KING LIGHTING SCI&TECH CO LTD