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A red electroluminescent material for detecting infrared laser and its preparation

An electroluminescent material, infrared laser technology, applied in luminescent materials, measuring devices, photometry and other directions, can solve the problems of luminescence quenching, only qualitative identification, unable to achieve quantitative identification, etc., to achieve the effect of sensitive infrared detection

Inactive Publication Date: 2015-08-12
SHANGHAI KEYAN PHOSPHOR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]The luminescent materials based on ZnS and SeS are the most common and widely used luminescent materials, such as: electroluminescent materials, CRT luminescent materials, etc. Its luminescence has a serious quenching effect. In the same ZnS matrix material, Pb and Cu activators are added, and after high-temperature sintering, an electron capture luminescent material is prepared, which produces green or orange luminescence under the excitation of infrared ray 800-2000nm. The above Chinese patent 2013100020759, 96121255.1, 96247084.8, 201010214340.6, 201010214358.6 have been explained, they can only qualitatively identify infrared light, and cannot achieve quantitative identification

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Take 1000 grams of SeS matrix material, add cobalt acetate, and add a Co content of 1×10 per gram of matrix material -3 ; Add silver nitrate, relative to adding Ag content 2×10 per gram of matrix material -2 ; Add thallium nitrate, relative to the addition of Tl content per gram of matrix material 1 × 10 -4 ; Add water to adjust the paste, add 20 grams of sulfur, and dry at 120 degrees. Add 3% sulfur to the above powder and grind it evenly. Put the dried material into an alumina crucible, cover and seal it; sinter in an electric furnace at 750 degrees for 10 hours, take it out, cool and pulverize it, and then anneal at a temperature of 300 degrees for 8 hours.

[0033] Configure 10 liters of a mixture of 15% ammonia water and 20% hydrogen peroxide in a beaker, soak the luminescent material for 1 hour, pour off the reacted liquid, repeat 3 times, then use deionized water to wash to neutral, and 120 degrees dry.

Embodiment 2

[0035] Take 100 grams of SeS material and 50 grams of ZnS material, mix and grind the two matrix materials evenly, add cobalt acetate, and add a Co content of 1×10 per gram of matrix material -2 ; Add silver chloride, relative to adding Ag content 5×10 per gram of matrix material -2 ; Add thallium nitrate, relative to the addition of Tl content per gram of matrix material 1 × 10 -3 Add water to adjust the paste, add 4 grams of sulfur, and dry at 120 degrees. Add 3% sulfur to the above powder and grind it evenly. Put the dried material into a quartz tube, cover and seal it; sinter in an electric furnace at 800 degrees for 8 hours, take it out, cool and pulverize it, and then anneal at a temperature of 300 degrees for 10 hours.

[0036] Prepare 1 liter of a mixture of 15% ammonia water and 20% hydrogen peroxide in a beaker, add 50 grams of ammonium carbonate and 50 grams of ammonium chloride at the same time, heat slightly to dissolve. Soak the luminescent material for ...

Embodiment 3

[0038] Take 500 grams of SeS matrix material, add cobalt nitrate, and add a Co content of 2×10 per gram of matrix material -3 ; Add silver acetate, relative to adding Ag content 3×10 in every gram of matrix material -2 ; Add thallium acetate, relative to the addition of Tl content per gram of matrix material 3 × 10 -4 ; Relative to adding In content per gram of matrix material 1 × 10 -4 , add water to adjust the paste, add 40 grams of sulfur, and dry at 120 degrees. Add 3% sulfur to the above powder and grind it evenly. Put the dried material into an alumina crucible, cover and seal it; sinter in an electric furnace at 750 degrees for 10 hours, take it out, cool and pulverize it, and then anneal at a temperature of 300 degrees for 8 hours.

[0039] Configure 5 liters of a mixture of 15% ammonia water and 20% hydrogen peroxide in a beaker, soak the luminescent material for 1 hour, pour off the reacted liquid, repeat 3 times, and then use deionized water to wash to neu...

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Abstract

The invention relates to a red electroluminescence material for detecting infrared laser and a preparation method thereof. The red electroluminescence material comprises a SeS base material, wherein activating agent containing Co, Ag, Ti acid compounds is added, sulfur is added, the materials are uniformly mixed to be sintered at a high temperature in a sulfur protective atmosphere to form a three-dimensional structural luminescence material, the material is washed by a mixed liquid of ammonium hydroxide and hydrogen peroxide and then is washed to be neutral by utilizing deionized water, and the material is dried by infrared; the transmitting spectrum of the infrared laser detection red luminescence material is 590nm to 630nm, the infrared laser intensity of an infrared electroluminescence detector is in inverse relation with the working current of the luminescence material, the prepared infrared electroluminescence detector can be used for qualitatively and quantitatively detecting, tracking, correcting and recognizing invisible near-infrared ray, and the red electroluminescence material can be widely applied to the fields such as near-infrared laser detection, medical diagnosis and the like.

Description

technical field [0001] The invention belongs to the technical field of infrared laser detection and luminescent material application. Background technique [0002] Infrared lasers are commonly used products in the fields of industry, medical treatment, and military affairs. Since infrared light cannot be directly observed by the human visual system, the detection of infrared light highlights the practical application significance. The existing technology of using luminescent materials to detect infrared light is mainly through up-conversion luminescence or infrared quenching technology, and the detection of near-infrared light has been realized. The disadvantage is that photoluminescence detects infrared light, which cannot directly measure the infrared light numerically. strong and weak. [0003] The known up-conversion luminescent materials and electron-capturing luminescent materials are mainly doped rare earth activators such as rare earth fluoride and strontium calci...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/88G01J1/58
Inventor 郑岩陈磊周蕾黄立华赵谡玲孟立建
Owner SHANGHAI KEYAN PHOSPHOR TECH