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Upconversion fluorescent powder on zirconium-gallium sulphide basal body and preparation method of upconversion fluorescent powder

A technology of sulfide and phosphor, which is applied in the field of phosphor to achieve the effects of low energy consumption, simple method and low cost

Inactive Publication Date: 2015-09-23
OCEANS KING LIGHTING SCI&TECH CO LTD +2
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  • 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

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  • Upconversion fluorescent powder on zirconium-gallium sulphide basal body and preparation method of upconversion fluorescent powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: select ZrS for use, Ga 2 S 3 , Li 2 S, Pr 2 S 3 and Yb 2 S 3 The powder, the molar ratio of which is 0.7:0.2:0.05:0.015:0.01, was ground in a corundum mortar for 40 minutes to make it evenly mixed, then fired at 950°C for 3 hours, then cooled to 200°C for 2 hours, and then Take it out with the furnace cooling to room temperature to get bulk material, after crushing, you can get 0.7ZrS-0.2Ga 2 S 3 -0.05Li 2 S: 0.03Pr 3+ , 0.02Yb 3+ Up-converting phosphors.

[0022] figure 1 It is a photoluminescence spectrum diagram of the zirconium gallium sulfide matrix up-conversion phosphor prepared in Example 1, and the excitation wavelength is 578 nm of green light. The blue luminescence peak with a luminescence wavelength of 483nm corresponds to Pr 3+ ion 3 P 0 → 3 h 4 The transition radiates luminescence; at the same time, Yb 3+ As an excited light ion, it can further reduce the Pr 3+ Transition level, excited Pr 3+ jump.

Embodiment 2

[0023] Embodiment 2: select ZrS for use, Ga 2 S 3 , Li 2 S, Pr 2 S 3 and Yb 2 S 3 The powder, the molar ratio of which is 0.8:0.12:0.06:0.005:0.005, was ground in a corundum mortar for 20 minutes to make it evenly mixed, then fired at 1100°C for 0.5 hour, then cooled to 100°C for 3 hours, and then Cool down to room temperature with the furnace and take it out to obtain bulk material, which can be crushed to obtain 0.8ZrS-0.12Ga 2 S 3 -0.06Li 2 S: 0.01Pr 3+ , 0.01Yb 3+ Up-converting phosphors.

Embodiment 3

[0024] Embodiment 3: select ZrS for use, Ga 2 S 3 , Li 2 S, Pr 2 S 3 and Yb 2 S 3 The powder, the molar ratio of which is 0.57:0.3:0.03:0.03:0.02, was ground in a corundum mortar for 60 minutes to make it evenly mixed, then fired at 800°C for 1 hour, then cooled to 300°C for 0.5 hour, and then Take it out with the furnace cooling to room temperature to obtain a bulk material, which can be crushed to obtain 0.57ZrS-0.3Ga 2 S 3 -0.03Li 2 S: 0.06Pr 3+ , 0.04Yb 3+ Up-converting phosphors.

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Abstract

The invention discloses upconversion fluorescent powder of a zirconium-gallium sulphide basal body and a preparation method of the upconversion fluorescent powder. The structural general formula of the fluorescent powder is aZrS-bGa2S3-cR2S: xPr3+ and yYb3+, wherein the aZrS-bGa2S3-cR2S is a substrate, and the Pr3+ and the Yb3+ are doping and activating elements which are used as luminous ion centers in films; the numerical value of a is in 0.57-0.8, 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 praseodymium-ytterbium co-doping zirconium-gallium sulphide basal body, prepared by the preparation method disclosed by the invention, can realize long-wave radiation excitation from infrared light to green light, and the emission peak of the obtained blue light of which the luminous wavelength is 483nm corresponds to transition radiation emission of Pr3+ ions 3P0 to 3H4.

Description

technical field [0001] The invention relates to the field of fluorescent powder, in particular to a zirconium gallium sulfide matrix 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 communication technology, fi...

Claims

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Application Information

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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
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