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Sulphide electron capture luminous material

A technology of electron capture and luminescent materials, applied in luminescent materials, chemical instruments and methods, etc., which can solve the problems of inability to realize sensitive excitation of invisible near-infrared lasers, limited application range, narrow excitation and emission spectra, etc.

Inactive Publication Date: 2010-10-27
SHANGHAI KEYAN PHOSPHOR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing electron-trapping luminescent materials are mainly barium fluoride and strontium calcium sulfide doped rare earth activator europium. The former absorbs X-ray energy and releases light under red laser irradiation. It is a good X-ray image storage material, but It cannot achieve sensitive excitation of invisible near-infrared laser light, which has been disclosed in Chinese patents 85100247 and 01142151.7
The latter is mainly based on strontium sulfide and calcium sulfide plus rare earth activators europium and samarium. This luminescent material can sensitively realize the excitation and luminescence of near-infrared laser light, but its disadvantages are that it is easy to deliquescence, and its stability and life are poor. In China Patents 200710023804.3, 200610103418.0, etc. disclose the preparation of its red luminescent material
When this type of material detects the microstrip with visible red luminescence 808nm wavelength laser, the red-orange luminescence emitted by itself is mixed with the red light in the excitation light, which cannot be effectively distinguished, and the practical application range is greatly limited. For example, Shanghai Kerun Photoelectric Technology Co., Ltd. commercially available product grades HT582, HT612
[0004] In addition, the existing near-infrared laser detection up-conversion luminescent materials are mainly rare earth system materials, which have the characteristics of narrow excitation and emission spectra, Chinese patent 96122293.X, Chinese patent 01138927.3, Chinese patent 01138920.6, US5541012, US7648648, etc Its preparation method is described, and its shortcoming is that it cannot detect a wide range of near-infrared light bands, such as the commercially available product brand HT111

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Get 30 grams of ZnS matrix material, add lead acetate, and add Pb content 8X10 in the matrix material relative to each gram -3 ; Add copper sulfate, add Cu content 1x10 relative to every gram of matrix material -1 ; Add samarium nitrate, add Sm content 1×10 relative to every gram of matrix material -1 ; Add 1 gram of flux lithium fluoride and 1 gram of sulfur. Mix well with water and dry at 120 degrees. Put the dried material into an alumina crucible, cover and seal it; sinter in an electric furnace at 1100 degrees for 3 hours, take it out and cool it.

[0033] After the material prepared by this method is irradiated with visible light for 10 seconds, and placed for 3 hours, an infrared 1800nm ​​light source is used to irradiate the excited luminescent material, which can emit bright green light.

Embodiment 2

[0035] Get 1000 grams of ZnS matrix material, add lead acetate, and add Pb content 1X10 in the matrix material relative to each gram -3 ; Add copper nitrate, relative to adding Cu content 7x10 per gram of matrix material -5 ; Add europium nitrate, relative to adding Eu content 5×10 in every gram of matrix material -1 Add 20 grams of fluxing agent sodium chloride, add 50 grams of sulfur. Use water to mix well and dry at 120 degrees. Put the dried material into an alumina crucible, cover and seal it; sinter in an electric furnace at 1200 degrees for 4 hours, take it out and cool it.

[0036] The material prepared by this method, after being irradiated with ultraviolet light for 2 seconds and placed for 0.2 hours, is used to irradiate the excited luminescent material with an infrared 808nm light source, which can emit bright green light.

Embodiment 3

[0038] Get 100 grams of ZnS matrix material, add lead acetate, and add Pb content 5X10 in relative to every gram of matrix material -4 ; Add copper nitrate, add Cu content 1x10 relative to every gram of matrix material -5 ; Add samarium nitrate, add Sm content 1×10 relative to every gram of matrix material -3 ; Add manganese nitrate, add Mm content 1×10 relative to every gram of matrix material -3 Add 3 grams of flux potassium chloride, add 5 grams of sulfur. Use water to mix well and dry at 120 degrees. Put the dried material into an alumina crucible, cover and seal it; sinter in an electric furnace at 1200 degrees for 4 hours, take it out and cool it.

[0039] After the material prepared by this method is irradiated with ultraviolet light for 60 seconds and placed for 10 hours, an infrared 1064nm light source is used to irradiate the excited luminescent material, which can emit bright orange-yellow light.

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PUM

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Abstract

The invention discloses a sulphide electron capture luminous material, which comprises a ZnS substrate material, wherein main activating agents containing Pb and Cu acid compounds are added into the ZnS substrate material, at least one kind of co-activating agents containing Sm, Eu, Er, Yb and Mn acid compounds is added into the ZnS substrate material, the mixture is dried after being uniformly mixed, and high-temperature sintering is carried out in protective atmosphere. After ultraviolet ray absorption, the materials have momentary sunset glow, and can generate green light under the stimulation of infrared rays between 800 and 2000 nm. The electron capture luminous material of the invention can be used for detecting, tracking, checking and identifying invisible near infrared light. The invention can be widely applied to the multi-disciplinary technical fields such as near infrared laser detection, laser light spot display, optical fiber communication indication, optical information storage, X-ray image processing, infrared imaging 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] Electron capture luminescence is a recombination luminescence phenomenon generated during the transition of electrons and holes in materials. [0003] The existing electron-trapping luminescent materials are mainly barium fluoride and strontium calcium sulfide doped rare earth activator europium. The former absorbs X-ray energy and releases light under red laser irradiation. It is a good X-ray image storage material, but It cannot realize the sensitive excitation of invisible near-infrared laser light, which has been disclosed in Chinese patents 85100247 and 01142151.7. The latter is mainly based on strontium sulfide and calcium sulfide plus rare earth activators europium and samarium. This luminescent material can sensitively realize the excitation and luminescence of near-infrared laser light, but its disadvant...

Claims

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Application Information

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IPC IPC(8): C09K11/56
Inventor 郑岩边静宇耿树范
Owner SHANGHAI KEYAN PHOSPHOR TECH
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