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Application of ALn(MoO4)2 up-conversion luminescent material doped with Er3+ and Yb3+ in optical temperature sensor

A technology for temperature sensors and luminescent materials, applied in luminescent materials, thermometers with physical/chemical changes, thermometers, etc., can solve problems such as applications that have not yet been reported

Inactive Publication Date: 2015-01-28
NORTHWEST UNIV(CN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The double molybdate material has good thermal stability and is a highly efficient matrix of rare earth-doped luminescent materials. Although there are reports on upconversion luminescent materials based on double molybdate, their application in optical temperature sensing Not yet reported

Method used

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  • Application of ALn(MoO4)2 up-conversion luminescent material doped with Er3+ and Yb3+ in optical temperature sensor
  • Application of ALn(MoO4)2 up-conversion luminescent material doped with Er3+ and Yb3+ in optical temperature sensor
  • Application of ALn(MoO4)2 up-conversion luminescent material doped with Er3+ and Yb3+ in optical temperature sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This example is AgLa 1-0.02-0.4 Er 0.02 Yb 0.4 (MoO 4 ) 2 The preparation of phosphor powder, the specific preparation process of sol-gel method is as follows:

[0033] 1) According to the reactant cation molar ratio Ag + :La 3+ :Yb 3+ :Er 3+ :Mo 6+=1:0.58:0.4:0.02:2 weigh AgNO respectively 3 (AR)0.1699g, (NH 4 ) 6 Mo 7 o 24 4H 2 O(AR)0.3531g, measure 0.05mol / L La(NO 3 ) 3 15.6mL, 0.02mol / L of Yb(NO 3 ) 3 Solution 20mL, 0.01mol / L Er(NO 3 ) 3 Mix and stir 2 mL of the solution to obtain solution A; weigh 1.2608 g of citric acid according to the ratio of citrate ions and metal ions to 3:1, add it to solution A, stir while adding, make it react completely, adjust the pH value of the solution with ammonia water to 7 to 8, then dilute to the volume with deionized water to obtain a colorless and transparent solution B;

[0034] 2) Put solution B in an oven and keep it warm at 80°C for 48 hours to form a uniform transparent colloid, then raise the temperatu...

Embodiment 2

[0039] This example is LiLa 1-0.01-0.1 Er 0.01 Yb 0.1 (MoO 4 ) 2 The preparation of phosphor powder, the specific preparation process of sol-gel method is as follows:

[0040] 1) According to the reactant cation molar ratio Li + :La 3+ :Yb 3+ :Er 3+ :Mo 6+ =1:0.89:0.1:0.01:2 respectively weigh Li 2 CO 3 (AR)0.0369g, (NH 4 ) 6 Mo 7 o 24 4H 2 O(AR)0.3531g, measure 0.05mol / L La(NO 3 ) 3 17.8mL, 0.02mol / L of Yb(NO 3 ) 3 Solution 5mL, 0.01mol / L Er(NO 3 ) 3 Mix and stir 1 mL of the solution to obtain solution A; weigh 1.2608 g of citric acid according to the ratio of citrate ions and metal ions at 3:1, add it to solution A, stir while adding to make it react completely, and adjust the pH value of the solution with ammonia water to 7 to 8, then dilute to the volume with deionized water to obtain a colorless and transparent solution B;

[0041] 2) Put solution B in an oven and keep it warm at 80°C for 48 hours to form a uniform transparent colloid, then raise the...

Embodiment 3

[0048] This example is LiGd 1-0.01-0.1 Er 0.01 Yb 0.1 (MoO 4 ) 2 The preparation of phosphor powder, the specific preparation process of sol-gel method is as follows:

[0049] 1) According to the reactant cation molar ratio Li + :Gd 3+ :Yb 3+ :Er 3+ :Mo 6+ =1:0.89:0.1:0.01:2 respectively weigh Li 2 CO 3 (AR)0.0369g, (NH 4 ) 6 Mo 7 o 24 4H 2 O(AR)0.3531g, measure 0.05mol / L of Gd(NO 3 ) 3 17.8mL, 0.02mol / L of Yb(NO 3 ) 3 Solution 5mL, 0.01mol / L Er(NO 3 ) 3 Mix and stir 1mL of the solution to obtain solution A; weigh 0.4203g of citric acid according to the ratio of citrate ions and metal ions at 1:1, add it to solution A, stir while adding to make it react completely, and adjust the pH value of the solution with ammonia water to 7 to 8, then dilute to the volume with deionized water to obtain a colorless and transparent solution B;

[0050] 2) Put solution B in an oven and keep it warm at 80°C for 48 hours to form a uniform transparent colloid, then raise th...

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Abstract

The invention relates to an application of an ALn(MoO4)2 up-conversion luminescent material doped with Er3+ and Yb3+ in an optical temperature sensor. The ALn(MoO4)2 up-conversion luminescent material doped with Er3+ and Yb3+ has a double-peak green up-conversion emission function. By adopting a fluorescence intensity ratio (FIR) technology and measuring the change of the intensity ratio of green emissions of the material at about 528nm and 550nm under the excitation of 980nm laser with temperature, high-sensitivity temperature detection can be achieved.

Description

technical field [0001] The invention belongs to the technical field of luminescent materials in physics, in particular to Er 3+ and Yb 3+ Doped ALn(MoO 4 ) 2 (A=Li, Na, K, Ag; Ln=La, Gd, Y, Lu) Application of up-conversion luminescent materials in optical temperature sensors. Background technique [0002] An up-conversion luminescent material is a luminescent material that can generate higher-energy photons when excited by lower-energy photons, such as a material that can emit visible light when excited by infrared lasers. It has broad application prospects in the fields of temperature detection, anti-counterfeiting, infrared detection, three-dimensional display, short-wavelength all-solid-state lasers, biomarkers, and solar cells. [0003] The optical temperature sensor based on fluorescence intensity ratio (FIR) technology is a method of measuring temperature by using the ratio of fluorescence intensity emitted by different luminous energy levels that vary with tempera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K11/00C09K11/78
Inventor 郭崇峰李婷
Owner NORTHWEST UNIV(CN)
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