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A kind of co-crystal, its preparation method and application

A eutectic and crystal technology, applied in the field of infrared nonlinear optical materials and their preparation

Active Publication Date: 2021-09-21
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Prepared by high temperature reaction method of sealed vacuum quartz tube and graphite crucible

Method used

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  • A kind of co-crystal, its preparation method and application
  • A kind of co-crystal, its preparation method and application
  • A kind of co-crystal, its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1Ba10I

[0047] Example 1Ba 10 In 6 Zn 7 S 26 Preparation of -nZnS (n=0,2,3,4,5,12,14) co-crystal

[0048] Press BaS:In 2 S 3 : The molar ratio of ZnS is 10:3:7+n, weigh BaS:In 2 S 3 : ZnS is mixed evenly, put into graphite crucible after tableting, then put into quartz tube, vacuumize and seal, put in high temperature furnace for dozens of hours to rise to 900 to 950°C, then keep the temperature for 50 hours, and then directly drop to to room temperature, the desired co-crystal can be obtained. When n=0, the sample is marked as SS26; when n=2, the sample is marked as SS28; when n=3, the sample is marked as SS29; when n=4, the sample is marked as SS30; when n=5, the sample is marked as SS31; When n=12, the sample is marked as SS38; when n=14, the sample is marked as SS40-1. The specific preparation conditions of the samples are shown in Table 1.

[0049] Table 1

[0050]

[0051]

Embodiment 2

[0052] Embodiment 2 solid solution SS40-2 preparation

[0053] Press BaS:In 2 S 3 : The molar ratio of ZnS is 10:3:21 Weigh BaS, In 2 S 3 , ZnS mixed evenly, put into graphite crucible after tableting, then put into quartz tube, seal after vacuuming, put in high temperature furnace at 940°C for 50 hours, cool down to room temperature for 10 hours, you can get SS40- 2 solid solution crystals.

Embodiment 3

[0054] Embodiment 3 sample structure test

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Abstract

The application discloses a kind of eutectic, and described eutectic is made of Ba x In y Zn l S m A joint crystal formed by uniformly spaced distribution of ZnS and ZnS crystals, has the chemical formula shown in formula I: Ba x In y Zn l S m ‑nZnS formula I wherein, 9≤x≤11, 6≤y≤7, 6≤l≤7, 25≤m≤26 and x:y:l:m=10:6:7:26, 0≤n≤ 30. The eutectic material has phase matching, a band gap greater than 3.0 electron volts (3.05eV), a large damage threshold, and high frequency conversion efficiency (2.1×AgGaS 2 ), the material of this system has great potential value in the field of infrared nonlinearity.

Description

technical field [0001] The application relates to a co-crystal, which belongs to the field of infrared nonlinear optical material and its preparation. Background technique [0002] Laser light sources with a wavelength range of 2-20 μm in the mid- and far-infrared bands have important applications in both civilian and military high-tech fields, and tunable infrared laser light sources with good coherence are used in remote sensing, infrared laser radar guidance, and photoelectric countermeasures. play an important role in other applications. [0003] At present, the generation of lasers in the 2-20 μm mid- and far-infrared bands is mainly based on the principle of nonlinear optics and the application of infrared nonlinear optical crystal frequency conversion technology. The commonly used infrared nonlinear optical crystals are mainly AgGaS 2 , AgGaSe 2 , ZnGeP 2 Wait. At home and abroad, these crystals have been successfully used in civilian high-tech fields and militar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B35/00C30B29/46
CPCC30B29/46C30B35/00
Inventor 柴国良周安宜林晨升程文旦庞泳喻张浩
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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