Temperature sensing material based on europium and manganese and preparation and application method thereof

A technology of sensing materials and application methods, applied in the field of temperature sensing materials based on europium and manganese elements, can solve the problem that the temperature measurement sensitivity cannot meet the requirements of high-precision measurement, the energy level difference, and the inability to achieve temperature measurement sensitivity and signal discrimination. At the same time, optimize and improve problems to achieve the effect of large signal detection discrimination, wide temperature measurement range, and mutual interference avoidance

Inactive Publication Date: 2020-01-10
UNIV OF SHANGHAI FOR SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the temperature measurement sensitivity is proportional to the energy level difference of thermal coupling
Therefore, the temperature measurement sensitivity obtained by this technology cannot meet the requirements of high-precision measurement, and it is also impossible to optimize and improve the temperature measurement sensitivity and signal discrimination at the same time

Method used

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  • Temperature sensing material based on europium and manganese and preparation and application method thereof
  • Temperature sensing material based on europium and manganese and preparation and application method thereof
  • Temperature sensing material based on europium and manganese and preparation and application method thereof

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Experimental program
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Effect test

Embodiment 1

[0038]1. The rare earth europium and transition metal manganese activators are co-doped into the inorganic oxide host matrix according to a reasonable concentration, and a fluorescent temperature sensing material with co-luminescence of trivalent europium Eu(Ⅲ) and tetravalent manganese Mn(Ⅳ) is prepared ;

[0039] 2. Detect the emission spectrum of the fluorescent temperature sensing material at different temperatures, and establish the standard working curve of the integrated luminous intensity ratio of the characteristic emission peaks of trivalent europium Eu(Ⅲ) and tetravalent manganese Mn(Ⅳ) as a function of ambient temperature;

[0040] 3. Place the fluorescent temperature sensing material in the environment of the temperature to be measured, measure the emission spectrum of the fluorescent temperature sensing material, and then obtain the integrated luminous intensity of the characteristic emission peaks of trivalent europium Eu(Ⅲ) and tetravalent manganese Mn(Ⅳ) ratio...

Embodiment 2

[0052] The difference between embodiment two and the foregoing embodiment one is that the specific atomic ratio composition of the fluorescent temperature sensing material prepared in step one is: (Ca 13.45 Sr 0.5 )(Al 9.45 Ga 0.5 )(Zn 5.8 Mg 0.2 )O 35 :Eu 0.05 3+ ,Mn 0.05 4+ , other steps and parameters are the same as those in the first embodiment.

Embodiment 3

[0054] Embodiment 3 is different from the foregoing embodiments in that the specific atomic ratio composition of the fluorescent temperature sensing material prepared in step 1 is: (Ca 13.05 Sr 0.9 )(Al 9.00 Ga 0.9 )(Zn 5.2 Mg 0.8 )O 35 :Eu 0.05 3+ ,Mn 0.10 4+ , other steps and parameters are the same as those in the previous embodiment.

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Abstract

The invention discloses a temperature sensing material based on europium and manganese elements and a preparation and an application method thereof. The temperature sensing material has the atomic ratio of (Ca14-m-xSrm) (Al10-n-yGan) (Zn6-tMgt) O35: Eux < 3+>, Mny < 4+>. The preparation method synthesizes the temperature sensing material under normal pressure and air atmosphere, does not need reducing atmosphere synthesis, and is simple and safe. According to the application method, trivalent europium Eu (III) and tetravalent manganese Mn (IV) are used as double light-emitting centers to simultaneously emit respective characteristic spectrums; according to the invention, the integral luminous intensity ratio is regularly changed along with the change of temperature, a standard working curve can be used for fitting, and a higher signal discrimination degree is obtained by detecting two characteristic emission peaks of trivalent europium Eu (III) and tetravalent manganese Mn (IV), whichare far away from each other in wavelength, so that the mutual interference of detection signals is avoided. According to the invention, the temperature can be accurately calibrated, the temperature measurement range is wide, and the signal detection discrimination degree is high.

Description

technical field [0001] The invention relates to the technical field of temperature sensing, in particular to a temperature sensing material based on europium and manganese elements and a preparation and application method thereof. Background technique [0002] Accurate measurement of temperature is of great significance in scientific research, technical applications, daily life and all walks of life. With the rapid development and progress of 5G technology and Internet of Things technology, higher requirements are placed on the characteristics of temperature sensors. In this context, non-contact temperature detection represented by optical temperature sensing technology has gradually become a research hotspot. [0003] Some optical properties of the luminescent material will change with the change of temperature within a certain temperature range, so the change of the optical properties of the luminescent material can be used to calibrate and detect the temperature. The mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/64G01K11/00
CPCC09K11/7734G01K11/00
Inventor 郭宁张玉慧王瑶朱淼淼贾承政欧阳瑞镯缪煜清
Owner UNIV OF SHANGHAI FOR SCI & TECH
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