Infrared transparent chalcogenide glass solution and application thereof

Abstract

The invention discloses an infrared transparent chalcogenide glass solution which is prepared by dissolving chalcogenide glass and an organic amine solvent, the organic amine solvent is an amine salt solvent containing bifunctional groups, and the microscopic network structure of the chalcogenide glass is formed by combining chalcogenide elements, modifiers and selectively added dopants through covalent bonds. The chalcogenide element is S, Se or Te, the modifier is at least one of Ge, Sb, In, Sn and As, the dopant is at least one of Cd, Ag, CsCl, Bi, Cs and Cu, and the microscopic network structure of the chalcogenide glass is rich in MNa with a triangular pyramid or tetrahedral structure. The glass solution has high infrared wide spectrum transmittance and high refractive index, has higher light control capability, can be used for preparing an infrared liquid deformation lens, is used in a middle and far infrared deformation imaging system, enables the imaging system to be more integrated, and provides a new way for the development direction of the infrared imaging system towards light weight, miniaturization and high performance.

Description

Technical Field

[0001] The present invention relates to the technical field of infrared optical lenses, and in particular to an infrared transparent chalcogenide glass solution and applications thereof. Background Art

[0002] Infrared optical imaging systems are widely used in military, security surveillance, industrial manufacturing, medical, environmental testing, and other fields. Currently, infrared optical imaging systems are developing towards miniaturization, lightweighting, continuous large zoom, and low power consumption. Traditional zoom methods achieve zooming by varying the distance between optical lens groups. This zoom method can achieve a wide range of zoom, but due to the need for multiple fixed-focal-length lenses and mechanical moving components, the reliance on motors to drive the zoom process makes the system complex, bulky, heavy, and power-hungry. Furthermore, the uneven curvature of the lens causes light from different directions to focus at different locations, resulting in deviations between the actual image and the ideal image, thus reducing image clarity and quality. To address these issues, anamorphic lenses have been proposed and demonstrated. Inspired by biomimetic technology from the human eye, anamorphic lenses achieve focal length changes by varying the radius of curvature or refractive index. Liquid deformable lenses typically consist of a transparent elastic film and a fluid medium. Their shape can be adjusted to control focal length through external pumps, electromagnetic actuation, dielectric elastomer actuation, electrostatic force actuation, piezoelectric actuation, and other methods. Without requiring mechanical movement, they offer the advantages of compact structure, flexible control, and zero mechanical wear. This lens design is both compact and lightweight, and has been proven to allow continuous focal length adjustment over a wide range while effectively correcting low- to high-order optical aberrations.

[0003] Liquid deformable lenses primarily come in three structural types: liquid crystal, electrowetting, and liquid-filled. Liquid crystal lenses, however, have limited focusing range and response time due to the thickness of the liquid crystal layer, resulting in significant light loss and aberrations. Electrowetting lenses typically use electrolyte solutions, which can hydrolyze over time, degrading performance. Liquid-filled lenses, on the other hand, offer a simpler structure, a larger aperture, a faster response, and superior image quality. Based on the liquid-filled deformable lens structure, piezoelectric drive offers lower drive voltage, faster response, and the ability to miniaturize the device, making it more suitable for driving liquid-filled deformable lenses.

[0004] The liquid media used in currently reported liquid deformable lenses primarily include conductive liquids such as sodium chloride solution and pure organic salt solutions, and insulating liquids such as silicone fluid, silicone oil, mixed solutions of aromatic halogenated hydrocarbons, water, and liquid crystals. These liquid media exhibit excellent optical properties in the visible light band, but their low transmittance or numerous strong vibrational absorption peaks in the infrared band limit their application in the infrared domain, making them unsuitable for the preparation of infrared liquid deformable lenses. Chalcogenide glasses, on the other hand, offer an ultra-wide infrared transmittance range (1–20 μm), good transmittance (>50%), an extremely high refractive index (2.0–3.8), continuously tunable composition, and the ability to dissolve ammonium salts. However, due to the numerous and strong vibrational absorption peaks of organic ammonium salts in the infrared band, their infrared transmittance is very low and irregular, making it difficult to prepare solutions transparent across a wide infrared spectrum. Therefore, leveraging the unique advantages of chalcogenide glasses, developing new infrared-transparent liquids for use in deformable lenses holds significant scientific significance for the application of infrared imaging technology. Summary of the Invention

[0005] The present invention addresses the shortcomings of existing technologies by providing an infrared-transparent chalcogenide glass solution with high transmittance, high refractive index, and excellent stability across a wide infrared spectrum, and its application. Infrared liquid deformable lenses fabricated from this chalcogenide glass solution can be used in mid- and far-infrared deformable imaging systems, making them more integrated and providing a new path toward lightweight, miniaturized, and high-performance infrared imaging systems.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: an infrared transparent chalcogenide glass solution, which is prepared by dissolving a chalcogenide glass and an organic amine solvent, wherein the organic amine solvent is an amine salt solvent containing a bifunctional group, wherein the bifunctional group is an alkyl group and an amino group, and the microscopic network structure of the chalcogenide glass is formed by covalent bonding of a chalcogenide element, a modifier, and a selectively added dopant, wherein the chalcogenide element is S, Se, or Te, the modifier is at least one of Ge, Sb, In, Sn, and As, and the dopant is at least one of Cd, Ag, CsCl, Bi, Cs, and Cu, and the microscopic network structure of the chalcogenide glass is rich in MN with a triangular pyramidal or tetrahedral structure. a , wherein M is at least one of Ge, Sb, In, Sn, As, Cd, Ag, Cs, Bi, and Cu, N is S, Se, or Te, and the value of a is 2, 3, or 4.

[0007] The chalcogenide glass solution of the present invention has high infrared transmittance across a wide infrared spectrum and a high refractive index, providing excellent light control capabilities and enabling the preparation of infrared liquid deformable lenses. These infrared liquid deformable lenses can be used in mid- and far-infrared deformable imaging systems, making them more integrated and providing a new path for the development of infrared imaging systems towards lightweight, miniaturized, and high-performance.

[0008] The dissolution process of chalcogenide glass in an organic amine solvent begins with the fragmentation of bulk glass along the weakly bonded interlayer planes of the layered structure, forming nano-sized solute clusters or platelets. The organic amine solvent used in the present invention is an amine salt solvent containing a bifunctional group of alkyl (R) and amino (NH2), wherein the alkyl group is preferably methyl (CH3), for example, organic amine solvents such as n-propylamine, n-butylamine, ethylenediamine, and ethanolamine. The organic amine solvent containing a bifunctional group of alkyl (R) and amino (NH2) has strong polarity. The alkyl group in the alkyl chain improves the permeability of the solvent by reducing the intermolecular force, and its hydrophobic property can effectively promote the uniform dispersion of the chalcogenide glass in the organic amine solvent. The amino group can replace the S, Se or Te atoms exposed in the solvent through a nucleophilic reaction. Specifically, the amino group (NH2) in the organic amine solvent can react with the S, Se or Te atoms in the chalcogenide glass, causing the chemical bonds in the glass network structure to break, thereby forming an amine salt. Its lone pair electrons can form a multidentate coordination structure with metal ions M such as Ge, Sb, In, Sn, As, Cd, Ag, Cs, Bi, Cu, etc., to produce a stable complex, thereby improving the stability of the chalcogenide glass solution.

[0009] Specifically, during the dissolution of the chalcogenide glass, the alkyl and amino groups in the organic amine solvent replace the chalcogen elements in the chalcogenide glass and form amine salts M(RNH)3 with the metal ions M in the chalcogenide glass. M(RNH)3 induces M vacancies in the glass network, and the M vacancies react with the solvent to form alkyl-amino-metal-sulfide complexes [M(nb) x ] n+ , where nb represents the amine salt, x represents the coordination number of the amine salt, and n is the charge carried by the complex. The formation of these complexes not only promotes the further dissolution of the chalcogenide glass but also ensures its stable existence in solution. Complete dissolution of the chalcogenide glass in an organic amine solvent forms a clear, transparent, precipitate-free chalcogenide glass solution that exhibits high transmittance and high refractive index across a wide infrared band. This chalcogenide glass solution can be used as a raw material for the preparation of infrared liquid deformable lenses, particularly those with adjustable focal length and aberration-correcting capabilities.

[0010] The above-mentioned alkyl-amino-metal-sulfide complex [M(nb) x ] n+ The reaction formula is as follows:

[0011]

[0012] In a first preferred embodiment, the chalcogen element is S, the modifier is at least one of Ge, Sb, and In, the dopant is at least one of Cd, Ag, and CsCl, and the molar percentage contents of each component are as follows: S ≥ 40 mol%, 5 mol% < Ge < 30 mol%, 10 mol% < Sb ≤ 40 mol%, In < 20 mol%, Cd < 10 mol%, Ag < 20 mol%, CsCl < 20 mol%, the sum of the molar percentage contents of all modifiers < 50 mol%, and the sum of the molar percentage contents of all components is 100 mol%.

[0013] In a second preferred embodiment, the chalcogen element is Se, the modifier is at least one of Ge, Sb, and Sn, the dopant is at least one of Bi, CsCl, and Cu, and the molar percentage contents of each component are as follows: Se ≥ 55 mol%, Ge ≤ 20 mol%, Sb < 35 mol%, Sn ≤ 13 mol%, Bi < 15 mol%, CsCl < 10 mol%, Cu < 25 mol%, the sum of the molar percentage contents of all modifiers < 50 mol%, and the sum of the molar percentage contents of all components is 100 mol%.

[0014] In a third preferred embodiment, the chalcogen element is Te, the modifier is at least one of Ge, As, and In, the dopant is at least one of Ag, Bi, and Cu, and the molar percentage contents of each component are as follows: Te ≤ 80 mol%, 10 mol% ≤ Ge ≤ 35 mol%, 20 mol% ≤ As ≤ 60 mol%, In < 10 mol%, 10 mol% ≤ Ag ≤ 20 mol%, Bi < 10 mol%, 10% ≤ Cu ≤ 35 mol%, the sum of the molar percentage contents of all modifiers < 50 mol%, and the sum of the molar percentage contents of all components is 100 mol%.

[0015] Preferably, in this infrared transparent chalcogenide glass solution, the mass-volume ratio of the chalcogenide glass to the organic amine solvent is 0.001 - 2 g / mL.

[0016] Application of the above infrared transparent chalcogenide glass solution in the preparation of an infrared liquid deformable lens.

[0017] Compared with the prior art, the present invention has the following advantages: The chalcogenide glass solution of the present invention is prepared by dissolving a chalcogenide glass and an organic amine solvent. During the dissolution of the chalcogenide glass, the alkyl and amino groups in the organic amine solvent replace the chalcogen element in the chalcogenide glass and form an amine salt M(RNH)3 with the metal ion M in the chalcogenide glass. M(RNH)3 induces M vacancies in the glass network, and the M vacancies react with the solvent to form an alkyl-amino-metal-sulfide complex [M(nb)x ] n+ The formation of these complexes not only promotes the further dissolution of the chalcogenide glass, but also ensures its stable existence in the solution. After the chalcogenide glass is completely dissolved in the organic amine solvent, a clear, transparent, and precipitate-free chalcogenide glass solution is formed. The chalcogenide glass solution of the present invention has high transmittance and high refractive index in a wide infrared spectrum, good stability, and high light control ability, and can be used to prepare infrared liquid deformable lenses. The prepared infrared liquid deformable lens can be used in mid- and far-infrared deformable imaging systems, and can be used in the preparation of infrared liquid deformable lenses with adjustable focal length and aberration correction capabilities, making the imaging system more integrated and providing a new path for the development of infrared imaging systems towards lightweight, miniaturization, and high performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 1 is an infrared transmittance spectrum of the chalcogenide glass solution prepared in Example 1 and Example 3;

[0019] Figure 2 Schematic diagram of the structure of the device for preparing the liquid deformable lens in Example 1;

[0020] Figure 3 Schematic diagram of the principle of the device for preparing the liquid deformable lens in Example 1;

[0021] Figure 4 Graph showing the relationship between the focal length and deformation of the infrared liquid deformable lens prepared in Example 1. DETAILED DESCRIPTION

[0022] In order to better understand the present invention, the technical solutions in the embodiments of the present invention will be described in detail below in combination with the embodiments of the present invention and the accompanying drawings, but the implementation methods of the present invention are not limited thereto. For process parameters not specifically described, conventional techniques can be used.

[0023] Example 1: An infrared transparent chalcogenide glass solution, composed of Sb 25 S 75 The sulfide glass and n-butylamine are dissolved in each other. The alkyl and amino groups in n-butylamine replace the S atoms in the sulfide glass to form amine salt Sb(RNH)3. Sb(RNH)3 induces Sb vacancies in the glass network. The Sb vacancies react with the solvent to form alkyl-amino-metal-sulfide complexes [Sb(nb) x ] n+ , wherein nb represents n-butylamine, x represents the coordination number of n-butylamine, and n is the charge number of the complex. The preparation method of the infrared transparent chalcogenide glass solution comprises the following steps:

[0024] (1) Preparation of chalcogenide glass: According to the designed glass composition, weigh 15 g of the required raw materials Sb and S, both of which have a purity of 5N or above, and mix the weighed raw materials evenly and place them into a clean quartz ampoule;

[0025] (2) Vacuum treatment: The quartz ampoule containing the raw materials is vacuumed for the first time, and then vacuumed for the second time until the vacuum degree in the quartz ampoule is ≤10 -3 After Pa, the quartz ampoule was sealed using an oxyhydrogen flame;

[0026] (3) Melting of chalcogenide glass: The sealed quartz ampoule is placed in a rocking furnace and slowly heated to 900°C in a multi-stage heating method. The multi-stage heating process is as follows: first, slowly heat to 340°C at a heating rate of 2°C / min and keep at this temperature for 1 hour, then slowly heat to 550°C at a heating rate of 1°C / min and keep at this temperature for 1 hour, finally slowly heat to 900°C at a heating rate of 1°C / min, and then keep at 900°C for 24 hours under rocking (rocking rate of 4r / min, rocking angle of 60°), then slowly cool to 650°C at a cooling rate of 0.5°C / min, then let the quartz ampoule stand in a vertical state in the rocking furnace for 2 hours, then take the quartz ampoule out of the rocking furnace, put it into water and quench it to room temperature, that is, infrared transparent Sb is obtained in the quartz ampoule. 25 S 75 Chalcogenide glass blocks;

[0027] (4) Preparation of chalcogenide glass solution: In a dry glove box filled with high-purity nitrogen, the prepared infrared transparent Sb 25 S 75 Chalcogenide glass blocks were ground into Sb in an agate mortar. 25 S 75 glass powder, and then take 3g Sb 25 S 75 The glass powder was placed in a vial with weighing paper, 10 mL of n-butylamine solution was taken with a plastic dropper and added to the vial, a magnetic rotor was added to the vial and the cap was tightened; the vial was placed on a magnetic stirrer and heated and stirred at 1000 rpm and 60°C; and Sb was added to the vial. 25 S 75 After the glass powder is completely dissolved, the residue is removed by centrifuge, and the supernatant is dropped into a needle filter for filtration to obtain clear Sb 25 S 75 Chalcogenide glass solution, its infrared transmittance spectrum is shown in Figure 1 .

[0028] A device for preparing a liquid deformable lens, such as Figure 2 and Figure 3As shown, the device includes, arranged from top to bottom, a positive electrode layer 1, a piezoelectric ceramic sheet 2, a negative electrode layer 3, an upper ZnSe glass sheet 4, a quartz glass ring 5, and a lower ZnSe glass sheet 6. The piezoelectric ceramic sheet 2 is a single piezoelectric ceramic sheet (PZT) in a circular shape, and the central aperture of the piezoelectric ceramic sheet 2 is the designed working area 7. Figure 2 and Figure 3 The direction indicated by the middle arrow is the direction of light transmission in the working area 7. Two rings of sector-shaped discrete electrodes are distributed around the periphery of the working area 7, each ring containing 16 sector-shaped electrodes. The 32 sector-shaped electrodes constitute 32 single piezoelectric actuators, which in turn constitute the piezoelectric ceramic sheet 2. The upper ZnSe glass sheet 4, the quartz glass ring 5, and the lower ZnSe glass sheet 6 are bonded to the flat glass sheet and sealed with silicone rubber to form a sealed cavity 8. The ZnSe glass sheet has high transmittance in the wavelength range of 2.5 to 22 μm, can effectively transmit infrared light, and has good thermal shock resistance and stability.

[0029] Preparation of infrared liquid deformable lens: Sb 25 S 75 A chalcogenide glass solution is injected into the sealed cavity of the above-mentioned preparation device. When voltage is applied to 32 single piezoelectric actuators, the voltage difference between the piezoelectric ceramic sheet and the negative electrode layer changes. Due to the inverse piezoelectric effect of the piezoelectric material, the piezoelectric ceramic sheet will produce a lateral deformation of elongation or contraction. The edge of the upper ZnSe glass sheet is fixed to the quartz glass ring. Therefore, the deformation of the piezoelectric ceramic sheet will cause the upper ZnSe glass sheet to bend accordingly and produce off-plane displacement. By applying voltage to each actuator for piezoelectric drive, the upper ZnSe glass sheet is driven to deform within the working aperture, thereby changing the curvature radius and surface shape, thereby changing the focal length of the lens and correcting the aberration, and the Sb is prepared. 25 S 75 The relationship between the focal length and deformation of infrared liquid deformable lens is shown in the figure Figure 4 .

[0030] Example 2: An infrared transparent chalcogenide glass solution is prepared by dissolving 70GeS2-20In2S3-10CdS chalcogenide glass and n-butylamine. The lone pair electrons of the amino group in n-butylamine react with Ge 4+ Coordination weakens the Ge-S bond and forms a similar [Ge(nb) x ] n+ The complex structure will also be 3+ 、Cd 2+ Forming a coordination bond, thus forming [In(nb) x ] n+ 、[Cd(nb) x ] n+The preparation method of the infrared transparent chalcogenide glass solution comprises the following steps:

[0031] (1) Preparation of chalcogenide glass: According to the designed glass composition, weigh 15 g of the required raw materials Ge, In, Cd, and S, all of which have a purity of 5N or above, and mix the weighed raw materials evenly and place them into a clean quartz ampoule;

[0032] (2) Vacuum treatment: The quartz ampoule containing the raw materials is vacuumed for the first time, and then vacuumed for the second time until the vacuum degree in the quartz ampoule is ≤10 -3 After Pa, the quartz ampoule was sealed using an oxyhydrogen flame;

[0033] (3) Melting of chalcogenide glass: Place the sealed quartz ampoule into a rocking furnace and slowly heat it to 950°C in a multi-stage heating process. The multi-stage heating process is as follows: first, slowly heat it to 350°C at a heating rate of 2°C / min and keep it at this temperature for 1 hour; then slowly heat it to 450°C at a heating rate of 1°C / min and keep it at this temperature for 1 hour; finally, slowly heat it to 950°C at a heating rate of 0.5°C / min and keep it at this temperature for 1 hour. The quartz ampoule was kept at 950°C for 12 hours under a swinging condition (swing rate of 3 r / min, swing angle of 60°), and then slowly cooled to 900°C at a cooling rate of 0.5°C / min. Thereafter, the quartz ampoule was placed in a swinging furnace in a vertical state for 2 hours. The quartz ampoule was then taken out of the swinging furnace and quenched in water to room temperature, thereby obtaining an infrared transparent 70GeS2-20In2S3-10CdS chalcogenide glass block in the quartz ampoule.

[0034] (4) Preparation of sulfide glass solution: In a dry glove box filled with high-purity nitrogen, the prepared infrared transparent 70GeS2-20In2S3-10CdS sulfide glass block was ground into 70GeS2-20In2S3-10CdS glass powder in an agate mortar. Then 1 g of 70GeS2-20In2S3-10CdS glass powder was taken and placed in a cillin bottle with weighing paper. 10 mL of n-butylamine solution was taken with a plastic dropper and added to the cillin bottle. A magnetic rotor was added to the bottle and the bottle cap was tightened. The cillin bottle was placed on a magnetic stirrer and heated and stirred at 1000 rpm and 60°C. After the 70GeS2-20In2S3-10CdS glass powder was completely dissolved, the residue was removed by centrifuge, and the supernatant was dripped into a needle filter for filtration to obtain a clear 70GeS2-20In2S3-10CdS sulfide glass solution.

[0035] The preparation device in Example 1 was used to prepare a 70GeS2-20In2S3-10CdS infrared liquid deformable lens.

[0036] Example 3: An infrared transparent chalcogenide glass solution, comprising Ge 20 Sn5Se 75 It is prepared by dissolving chalcogenide glass and n-butylamine. The amino group in n-butylamine reacts with Ge 4+ 、Sn 3+ Ionic coordination to form [Ge(nb) x ] n+ 、[Sn(nb) x ] n+ The method for preparing the infrared transparent chalcogenide glass solution comprises the following steps:

[0037] (1) Preparation of chalcogenide glass: According to the designed glass composition, weigh 15 g of the required raw materials Ge, Sn, and Se with a purity of 5N or above, mix them evenly, and place them into a clean quartz ampoule;

[0038] (2) Vacuum treatment: The quartz ampoule containing the raw materials is vacuumed for the first time, and then vacuumed for the second time until the vacuum degree in the quartz ampoule is ≤10 -3 After Pa, the quartz ampoule was sealed using an oxyhydrogen flame;

[0039] (3) Melting of chalcogenide glass: The sealed quartz ampoule is placed in a rocking furnace and slowly heated to 950°C in a multi-stage heating manner. The multi-stage heating process is as follows: first, slowly heat to 250°C at a heating rate of 2°C / min and keep at this temperature for 1 hour, then slowly heat to 550°C at a heating rate of 0.5°C / min and keep at this temperature for 1 hour, finally slowly heat to 950°C at a heating rate of 0.5°C / min, and then keep at 950°C for 12 hours under rocking (rocking rate of 2r / min, rocking angle of 60°), then slowly cool to 850°C at a cooling rate of 0.5°C / min, then let the quartz ampoule stand in a vertical state in the rocking furnace for 2 hours, then take the quartz ampoule out of the rocking furnace, put it into water and quench it to room temperature, that is, infrared transparent Ge is obtained in the quartz ampoule. 20 Sn5Se 75 Chalcogenide glass blocks;

[0040] (4) Preparation of chalcogenide glass solution: In a glove box filled with high-purity nitrogen and dry, the prepared infrared transparent Ge 20 Sn5Se 75 Chalcogenide glass blocks are ground into Ge in an agate mortar. 20 Sn5Se 75 glass powder, and then take 1.2g Ge 20 Sn5Se 75The glass powder was placed in a vial with weighing paper, 10 mL of n-butylamine solution was taken with a plastic dropper and added to the vial, a magnetic rotor was added to the vial and the cap was tightened; the vial was placed on a magnetic stirrer and heated and stirred at 1000 rpm and 40°C; 20 Sn5Se 75 After the glass powder is completely dissolved, the residue is removed by centrifuge, and the supernatant is dropped into a needle filter for filtration to obtain clear Ge 20 Sn5Se 75 Chalcogenide glass solution, its infrared transmittance spectrum is shown in Figure 1 .

[0041] Ge was prepared using the preparation device in Example 1. 20 Sn5Se 75 Infrared liquid deformable lens.

[0042] Example 4: An infrared transparent chalcogenide glass solution, comprising Ge 20 Ag 10 Te 70 It is prepared by dissolving chalcogenide glass and ethylenediamine. The amino group in ethylenediamine reacts with Ag. 3+ Coordination occurs, weakening the Ag-Te bond and causing the dissociation of the glass structure to form a stable [Ag(nb) x ] n+ Type complexes, also with Ge 4+ Ionic coordination to form [Ge(nb) x ] n+ The preparation method of the infrared transparent chalcogenide glass solution comprises the following steps:

[0043] (1) Preparation of chalcogenide glass: According to the designed glass composition, weigh 10 g of the required raw materials Ge, Ag, and Te with a purity of 5N or above, mix the weighed raw materials evenly, and place them into a clean quartz ampoule;

[0044] (2) Vacuum treatment: The quartz ampoule containing the raw materials is vacuumed for the first time, and then vacuumed for the second time until the vacuum degree in the quartz ampoule is ≤10 -3 After Pa, the quartz ampoule was sealed using an oxyhydrogen flame;

[0045] (3) Melting of chalcogenide glass: The sealed quartz ampoule is placed in a rocking furnace and slowly heated to 850°C in a multi-stage heating manner. The multi-stage heating process is as follows: first, slowly heat to 350°C at a heating rate of 1°C / min and keep at this temperature for 1 hour, then slowly heat to 550°C at a heating rate of 0.5°C / min and keep at this temperature for 1 hour, finally slowly heat to 850°C at a heating rate of 0.5°C / min, and then keep at 850°C for 12 hours under rocking (rocking rate of 5r / min, rocking angle of 80°), then slowly cool to 750°C at a cooling rate of 0.5°C / min, then let the quartz ampoule stand in a vertical state in the rocking furnace for 2 hours, then take the quartz ampoule out of the rocking furnace, put it into water and quench it to room temperature, that is, infrared transparent Ge is obtained in the quartz ampoule. 20 Ag 10 Te 70 Chalcogenide glass blocks;

[0046] (4) Preparation of chalcogenide glass solution: In a glove box filled with high-purity nitrogen and dry, the prepared infrared transparent Ge 20 Ag 10 Te 70 Chalcogenide glass blocks are ground into Ge in an agate mortar. 20 Ag 10 Te 70 Glass powder, then take 0.3gGe 20 Ag 10 Te 70 Put the glass powder into the vial with weighing paper, take 10mL of n-butylamine solution with a plastic dropper and add it to the vial, add a magnetic rotor to the vial and tighten the cap; place the vial on a magnetic stirrer and heat and stir at 1000rpm and 80℃; wait for Ge 20 Ag 10 Te 70 After the glass powder is completely dissolved, the residue is removed by centrifuge, and the supernatant is dropped into a needle filter for filtration to obtain clear Ge 20 Ag 10 Te 70 Chalcogenide glass solution.

[0047] Ge was prepared using the preparation device in Example 1. 20 Ag 10 Te 70 Infrared liquid deformable lens.

Claims

1. An infrared transparent chalcogenide glass solution, characterized in that: The chalcogenide glass solution is prepared by dissolving chalcogenide glass and an organic amine solvent. The organic amine solvent is an amine salt solvent containing a bifunctional group, wherein the bifunctional group is an alkyl group and an amino group. The microscopic network structure of the chalcogenide glass is formed by covalent bonding of a chalcogenide element, a modifier, and a selectively added dopant. The chalcogenide element is S, Se, or Te, the modifier is at least one of Ge, Sb, In, Sn, and As, and the dopant is at least one of Cd, Ag, CsCl, Bi, Cs, and Cu. The microscopic network structure of the chalcogenide glass is rich in MN with a triangular pyramidal or tetrahedral structure. a , wherein M is at least one of Ge, Sb, In, Sn, As, Cd, Ag, Cs, Bi, and Cu, N is S, Se, or Te, and the value of a is 2, 3, or 4.

2. The infrared transparent chalcogenide glass solution according to claim 1, characterized in that: The chalcogen element is S, the modifier is at least one of Ge, Sb, and In, the dopant is at least one of Cd, Ag, and CsCl, and the molar percentage contents of each component are respectively: S≥40 mol%, 5 mol% < Ge < 30 mol%, 10 mol% < Sb ≤ 40 mol%, In < 20 mol%, Cd < 10 mol%, Ag < 20 mol%, CsCl < 20 mol%, the sum of the molar percentage contents of all modifiers < 50 mol%, and the sum of the molar percentage contents of all components is 100 mol%.

3. The infrared transparent chalcogenide glass solution according to claim 1, characterized in that: The chalcogen element is Se, the modifier is at least one of Ge, Sb, and Sn, the dopant is at least one of Bi, CsCl, and Cu, and the molar percentage contents of each component are respectively: Se≥55 mol%, Ge≤20 mol%, Sb < 35 mol%, Sn≤13 mol%, Bi < 15 mol%, CsCl < 10 mol%, Cu < 25 mol%, the sum of the molar percentage contents of all modifiers < 50 mol%, and the sum of the molar percentage contents of all components is 100 mol%.

4. The infrared transparent chalcogenide glass solution according to claim 1, characterized in that: The chalcogen element is Te, the modifier is at least one of Ge, As, and In, the dopant is at least one of Ag, Bi, and Cu, and the molar percentage contents of each component are respectively: Te≤80 mol%, 10 mol% ≤ Ge ≤ 35 mol%, 20 mol% ≤ As ≤ 60 mol%, In < 10 mol%, 10 mol% ≤ Ag ≤ 20 mol%, Bi < 10 mol%, 10% ≤ Cu ≤ 35 mol%, the sum of the molar percentage contents of all modifiers < 50 mol%, and the sum of the molar percentage contents of all components is 100 mol%.

5. The infrared transparent chalcogenide glass solution according to claim 1, characterized in that: In this infrared transparent chalcogenide glass solution, the mass-volume ratio of the chalcogenide glass to the organic amine solvent is 0.001 - 2 g / mL.

6. Use of the infrared transparent chalcogenide glass solution according to any one of claims 1 to 5 in the preparation of an infrared liquid deformable lens.

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