Zero-dimensional indium-based perovskite material with up-conversion and down-conversion luminescence, and preparation method and application of zero-dimensional indium-based perovskite material

Abstract

The invention discloses a zero-dimensional indium-based perovskite material with up and down conversion luminescence and a preparation method and application thereof, and belongs to the field of photoluminescence and halogen perovskite materials. The chemical formula of the zero-dimensional indium-based perovskite material is Cs2In1-x-y-zCl5 (H2O): xSb < 3 + >, yYb < 3 + >, zEr < 3 + >. The material has up-conversion and down-conversion luminescence properties; the material has an anti-thermal quenching behavior in a temperature changing process of up-conversion luminescence. The preparation method provided by the invention is a high-temperature solution boiling method, Sb, Yb and Er plasmas are introduced into zero-dimensional indium-based perovskite, the up-conversion and down-conversion luminescence properties of the material are realized, and meanwhile, the prepared zero-dimensional indium-based perovskite material has an anti-thermal quenching behavior. The whole process does not involve the use of hydrochloric acid, does not use other toxic solvents, only uses non-toxic and cheap distilled water as a solvent, and has the characteristic of green and environment-friendly chemical process. The zero-dimensional indium-based perovskite material with up-conversion and down-conversion luminescence has huge application potential in the field of non-contact temperature measurement.

Description

Technical Field

[0001] The invention belongs to the technical field of photoluminescence and halogen perovskite materials, and specifically relates to a zero-dimensional indium-based perovskite material with up- and down-conversion luminescence, and a preparation method and application thereof. Background Art

[0002] In recent years, halogen-based zero-dimensional (0D) indium-based perovskites have gradually become a hot area of ​​scientific research due to their unique physical and optical properties. This type of material achieves efficient broadband self-trapped exciton (STEs)-related down-conversion luminescence performance by virtue of its soft lattice structure and strong interaction between excited-state electrons and the lattice. However, the halogen-based 0D indium-based perovskites reported so far can only achieve down-conversion luminescence by doping with elements such as antimony (Sb) and tellurium (Te). In theory, up-conversion luminescence is expected to be achieved by doping with rare earth ions such as Yb / Er, but there have been no successful cases so far. Halogen-based 0D indium-based perovskites still face multiple challenges in practical applications and research.

[0003] First, from the perspective of the preparation process, halogen 0D indium-based perovskites usually rely on hydrochloric acid as a means of providing the necessary chloride ions. This process is not only harmful to the environment, but also due to the high volatility and corrosiveness of hydrochloric acid, it may pose a safety risk to operators during large-scale industrial production. Secondly, multiple research teams have used traditional solution methods to try to incorporate rare earth ions such as Yb / Er into 0D indium-based perovskites, but because the solution method cannot simultaneously meet the high activation energy and high critical reaction concentration required by rare earth ions, the goal of successfully doping rare earth ions such as Yb / Er has not been achieved so far. Finally, traditional non-contact fluorescence thermometers use the intensity change behavior of fluorescence at different temperatures for temperature sensing and measurement, but from the perspective of the luminescence mechanism, as the temperature increases, the fluorescence intensity of the luminescent material gradually weakens until fluorescence quenching occurs. This problem greatly restricts the possibility and efficiency of their application in high temperature environments.

[0004] In summary, halogen 0D indium-based perovskite materials have shown great potential and broad application prospects in the field of luminescent materials; however, it is necessary to solve the problems existing in the existing technology and open up a new technical route for the application of halogen 0D perovskite in non-contact fluorescence thermometers and temperature measurement technology. Summary of the invention

[0005] The purpose of the present invention is to provide a zero-dimensional indium-based perovskite material with up-conversion and down-conversion luminescence, and a preparation method and application thereof, so as to solve the problem that existing luminescent materials cannot achieve up-conversion luminescence, and achieve up-conversion and down-conversion luminescence of luminescent materials. At the same time, the provided material has fluorescence anti-thermal quenching behavior during the up-conversion temperature change process.

[0006] In order to achieve the above object, the present invention provides the following technical solutions: The present invention provides a zero-dimensional indium-based perovskite material with up-conversion and down-conversion luminescence, wherein the chemical formula of the zero-dimensional indium-based perovskite material is Cs2In 1-x-y-z Cl5(H2O):xSb 3+ ,yYb 3+ ,zEr 3+ , where 0.001≤x≤0.1, 0≤y≤0.3, 0≤z≤0.3, y+z=0.3.

[0007] The zero-dimensional indium-based perovskite material has up-conversion and down-conversion luminescence properties. Under ultraviolet light excitation, the zero-dimensional indium-based perovskite material emits yellow fluorescence; under near-infrared light excitation, the zero-dimensional indium-based perovskite material emits green fluorescence.

[0008] The zero-dimensional indium-based perovskite material has anti-thermal quenching behavior during up-conversion luminescence in the temperature range of 303-543 K.

[0009] Under ultraviolet light excitation, the zero-dimensional indium-based perovskite material emits light at a wavelength between 400 and 1050 nm.

[0010] Under near-infrared light excitation, the emission wavelengths of the zero-dimensional indium-based perovskite material are between 509-540 nm, 540-565 nm, 637-700 nm and 770-830 nm, respectively.

[0011] The present invention also provides a method for preparing the above-mentioned zero-dimensional indium-based perovskite material with up- and down-conversion luminescence, comprising: A cesium-containing compound, an indium-containing compound, an antimony-containing compound, an ytterbium-containing compound and an erbium-containing compound are added into distilled water and dispersed uniformly to obtain a solution; The obtained solution is heated, evaporated and crystallized to obtain the zero-dimensional indium-based perovskite material.

[0012] The molar ratio of the cesium-containing compound, the indium-containing compound, the antimony-containing compound, the ytterbium-containing compound and the erbium-containing compound is 2:0.695:0.005:(0.15-0.277):(0.15-0.023).

[0013] The cesium-containing compound is cesium chloride, the indium-containing compound is indium chloride, the antimony-containing compound is antimony chloride, the ytterbium-containing compound is ytterbium chloride, and the erbium-containing compound is erbium chloride.

[0014] The heating condition is heating at a temperature of 373-573 K for 5-20 min.

[0015] The present invention also provides the application of the above zero-dimensional indium-based perovskite material with up- and down-conversion luminescence in the field of non-contact temperature sensing.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The zero-dimensional indium-based perovskite material provided by the present invention has an InCl5(H2O) octahedron in the crystal structure composed of In-Cl and In-O bonds, which breaks the symmetry of the zero-dimensional indium-based perovskite Cs2InCl5(H2O), thereby causing a large Stokes shift. The luminous efficiency of undoped Cs2InCl5(H2O) is relatively low, while co-doping with Sb, Yb and Er makes Cs2In 1-x-y-z Cl5(H2O):xSb 3+ ,yYb 3+ ,zEr 3+ Materials in STEs luminescence mechanism and Yb 3+ -Er 3+ Under the two effects of ion energy level transition, it exhibits excellent down-conversion and up-conversion luminescence performance. In the temperature-varying process of up-conversion luminescence, the fluorescence intensity of this material increases with the increase of temperature, and fluorescence reverse thermal quenching behavior occurs. It provides a practical solution for the improvement of non-contact fluorescence temperature measurement technology, and has broad commercial prospects and scientific research significance.

[0017] The preparation method provided by the present invention is a high-temperature solution boiling method, which satisfies the rare earth ions' need for higher activation energy and high critical reaction concentration; Sb, Yb, and Er ions are successfully introduced into zero-dimensional indium-based perovskite, achieving the up-conversion and down-conversion luminescence performance of such materials, and the prepared zero-dimensional indium-based perovskite material has anti-thermal quenching behavior. The entire process does not involve the use of hydrochloric acid or other toxic solvents, but only uses non-toxic and inexpensive distilled water as a solvent, and has the characteristics of a green chemical process.

[0018] The zero-dimensional indium-based perovskite material provided by the present invention has extremely high sensitivity and accuracy, and has great application potential in the field of non-contact temperature measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the following briefly introduces the drawings required for use in the embodiment: Figure 1 The XRD pattern of Cs2InCl5(H2O) prepared in Example 1 of the present invention; Figure 2 Cs2In of Examples 3-7 of the present invention 1-x-y-z Cl5(H2O):xSb 3+ ,yYb 3+ ,zEr 3+ XRD pattern of Yb 3+ / Er3+ The different doping ratios are 1:1, 3:1, 6:1, 9:1 and 12:1; Figure 3 Cs2In of Examples 3-7 of the present invention 1-x-y-z Cl5(H2O):xSb 3+ ,yYb 3+ ,zEr 3+ Down-conversion emission spectrum of Yb 3+ / Er 3+ The different doping ratios are 1:1, 3:1, 6:1, 9:1 and 12:1; Figure 4 Cs2In of Examples 3-7 of the present invention 1-x-y-z Cl5(H2O):xSb 3+ ,yYb 3+ ,zEr 3+ The up-conversion emission spectrum of Yb 3+ / Er 3+ The different doping ratios are 1:1, 3:1, 6:1, 9:1 and 12:1; Figure 5 Cs2In of Example 5 1-x-y-z Cl5(H2O):xSb 3+ ,yYb 3+ ,zEr 3+ Down-conversion temperature spectrum of Yb 3+ / Er 3+ is 6:1; Figure 6 Cs2In of Example 4 1-x-y-z Cl5(H2O):xSb 3+ ,yYb 3+ ,zEr 3+ Up-conversion temperature spectrum of Yb 3+ / Er 3+ It is 3:1. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings: In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can usually be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] The invention discloses a zero-dimensional indium-based perovskite material with up-conversion and down-conversion luminescence, which is 3+ , Yb 3+ and Er 3+ Ion co-doping Cs2InCl5(H2O) to obtain zero-dimensional indium-based perovskite material Cs2In 1-x-y-z Cl5(H2O):xSb 3+ ,yYb 3+ ,zEr 3+ , where Cs + :In 3+ The molar ratio is 2:0.695, 0.001≤x≤0.1, 0≤y≤0.3, 0≤z≤0.3, y+z=0.3.

[0022] The zero-dimensional indium-based perovskite material has dual-modal luminescence properties and can realize up- and down-conversion luminescence. During the down-conversion temperature change process, the temperature rise causes the fluorescence intensity to first decrease and then stabilize, and the luminescence color changes from yellow to red; while in the up-conversion process, the green fluorescence intensity increases with the increase in temperature, showing the unique property of fluorescence anti-thermal quenching.

[0023] The present invention provides a method for preparing a zero-dimensional indium-based perovskite material that realizes up-conversion and down-conversion luminescence, comprising: S1: adding a cesium-containing compound, an indium-containing compound, an antimony-containing compound, an ytterbium-containing compound and an erbium-containing compound into a reaction container, and then adding distilled water into the reaction container and stirring to form a clear and transparent solution; S2: The obtained solution is heated at a temperature of 373-573 K for 5-20 min, and evaporated and crystallized to obtain the zero-dimensional indium-based perovskite material Cs2In 1-x-y-z Cl5(H2O):xSb 3+ ,yYb 3+ ,zEr 3+ .

[0024] In some embodiments, the cesium-containing compound is cesium chloride (CsCl), the indium-containing compound is indium chloride (InCl3), the antimony-containing compound is antimony chloride (SbCl3), the ytterbium-containing compound is ytterbium chloride (YbCl3), and the erbium-containing compound is erbium chloride (ErCl3). It should be noted that the use of the corresponding chloride is more in line with the process path of green synthesis and avoids the use of hydrochloric acid in the synthesis process.

[0025] In some embodiments, the molar ratio of the cesium-containing compound, the indium-containing compound, the antimony-containing compound, the ytterbium-containing compound and the erbium-containing compound is 2:0.695:0.005:(0.15-0.277):(0.15-0.023). In S1, CsCl, InCl3, SbCl3, YbCl3 and ErCl3 are selected and stirred to obtain a zero-dimensional indium-based perovskite material Cs2In 1-x-y-z Cl5(H2O):xSb 3+ ,yYb 3+ ,zEr 3+ , where Cs + :In 3+ =2: 0.695, 0.001≤x≤0.1, 0≤y≤0.3, 0≤z≤0.3, y+z=0.3.

[0026] The zero-dimensional indium-based perovskite material with up-conversion and down-conversion luminescence prepared by the present invention is applied in the field of non-contact temperature sensing.

[0027] The preparation method of the present invention proposes a high-temperature solution boiling method preparation technology, which satisfies the rare earth ions' need for higher activation energy and high critical reaction concentration. Through this new process, Sb and Yb / Er plasmas are introduced into zero-dimensional indium-based perovskites, realizing the up- and down-conversion luminescence performance of zero-dimensional indium-based perovskite materials; at the same time, the prepared zero-dimensional indium-based perovskite materials have reverse thermal quenching behavior during the up-conversion temperature change process, showing the characteristic of enhanced luminescence with increasing temperature. The luminescence performance of the zero-dimensional indium-based perovskite material Cs2InCl5(H2O) can also be regulated to significantly improve the accuracy and reliability of temperature sensing.

[0028] It is particularly worth emphasizing that the entire preparation process abandons harmful chemicals such as hydrochloric acid that may be used in traditional methods, and instead uses pure and economical distilled water as the only solvent. This practice of green chemistry not only reduces potential pollution to the environment, but also significantly reduces production costs, making the present invention have great potential in sustainable development and industrial application.

[0029] Other zero-dimensional indium-based perovskite materials can also be prepared using the above preparation method.

[0030] In S1, CsCl and InCl3 are stirred and mixed to obtain a zero-dimensional indium-based perovskite material Cs2InCl5(H2O), wherein Cs + :In 3+ =2:1.

[0031] In step S1, CsCl, InCl3 and SbCl3 are stirred and mixed to obtain a zero-dimensional indium-based perovskite material Cs2In 1-x Cl5(H2O):xSb 3+ Among them, Cs + :In 3+ =2: 0.9~1, 0.001≤x≤0.1. Cs2In is prepared by doping with a small amount of Sb element. 1-x Cl5(H2O):xSb 3+ Material: Cs2In 1-x Cl5(H2O):xSb 3+ The down-conversion luminescence of the material comes from the self-trapped exciton transition of the material's strong electron-phonon coupling, producing yellow fluorescence with a peak at 610 nm. Its luminescence intensity decays with increasing temperature, showing typical fluorescence thermal quenching characteristics, and has good prospects for optoelectronic applications.

[0032] In order to better illustrate the purpose, technical solutions and advantages of the present invention, the present invention will be further described below in conjunction with specific examples.

[0033] In the following examples, unless otherwise specified, all materials used can be obtained through common channels; and the test methods adopted are conventional methods in the art.

[0034] Example 1 Weigh 2 mmol of high-purity (99.9%) CsCl and 1 mmol InCl3, add them to the reaction vessel, then add 4 mL of distilled water, and stir for 15 min until all the raw materials are dissolved to form a clear and transparent solution, which is heated at 373 K for 20 min to evaporate and crystallize the solution to obtain the target product Cs2InCl5(H2O). Figure 1 As shown, XRD showed a pure phase of Cs2InCl5(H2O).

[0035] Example 2 Weigh 2 mmol of high-purity (99.9%) CsCl and 0.995 mmol InCl3, add them to the reaction vessel, weigh 1 mmol of SbCl3 and dissolve it in 20 mL of distilled water to make it 5% mol / L. Pipette 0.1 mL of SbCl3 solution and drop it into the reaction vessel, then add 4 mL of distilled water and stir ultrasonically for 15 min until all the raw materials are dissolved and a clear and transparent solution is formed. Heat it at 423 K for 15 min to evaporate and crystallize the solution to obtain the target product Cs2In 0.995 Cl5(H2O): 0.005Sb 3+ .

[0036] Example 3 Weigh 2 mmol of high-purity (99.9%) CsCl and 0.695 mmol InCl3, add them to the reaction vessel, weigh 1 mmol of SbCl3 and dissolve it in 20 mL of distilled water to make it 5% mol / L, weigh 2 mmol of YbCl3 and dissolve it in 10 mL of distilled water to make it 20% mol / L, weigh 1 mmol of ErCl3 and dissolve it in 10 mL of distilled water to make it 10% mol / L, respectively, take 0.1 mL, 0.75 mL and 1.5 mL of SbCl3, YbCl3 and ErCl3 solution and drop them into the reaction vessel, then add 2 mL of distilled water and stir for 15 min until all the raw materials are dissolved and a clear and transparent solution is formed. Heat it at 473 K for 10 min to evaporate and crystallize the solution to obtain the target product Cs2In 0.695 Cl5(H2O):0.005Sb 3+ , 0.15Yb 3+ , 0.15Er 3+ , where Yb:Er=1∶1.

[0037] Example 4 Weigh 2 mmol of high-purity (99.9%) CsCl and 0.695 mmol InCl3, add them to the reaction vessel, weigh 1 mmol of SbCl3 and dissolve it in 20 mL of distilled water to make it 5% mol / L, weigh 2 mmol of YbCl3 and dissolve it in 10 mL of distilled water to make it 20% mol / L, weigh 1 mmol of ErCl3 and dissolve it in 10 mL of distilled water to make it 10% mol / L, respectively, take 0.1 mL, 1.125 mL and 0.75 mL of SbCl3, YbCl3 and ErCl3 solutions and drop them into the reaction vessel, then add 2 mL of distilled water and stir for 15 min until all the raw materials are dissolved to form a clear and transparent solution, heat it at 573 K for 5 min to evaporate and crystallize the solution to obtain the target product Cs2In 0.695 Cl5(H2O):0.005Sb 3+ , 0.225Yb 3+ , 0.075Er 3+ , where Yb:Er=3∶1.

[0038] Figure 4 It shows that the Cs2In prepared in Example 4 0.695 Sb 0.005 Cl5(H2O):Yb / Er perovskite has the highest upconversion luminescence intensity. Figure 6 It can be seen that in the temperature range of 303 K-543 K, the fluorescence intensity increases with increasing temperature, showing an anti-thermal quenching behavior.

[0039] Example 5 Weigh 2 mmol of high-purity (99.9%) CsCl and 0.695 mmol InCl3, add them to the reaction vessel, weigh 1 mmol of SbCl3 and dissolve it in 20 mL of distilled water to make it 5% mol / L, weigh 2 mmol of YbCl3 and dissolve it in 10 mL of distilled water to make it 20% mol / L, weigh 1 mmol of ErCl3 and dissolve it in 10 mL of distilled water to make it 10% mol / L, respectively, take 0.1 mL, 1.284 mL and 0.428 mL of SbCl3, YbCl3 and ErCl3 solutions and drop them into the reaction vessel, then add 2 mL of distilled water and stir for 15 min until all the raw materials are dissolved to form a clear and transparent solution, heat it at 523K for 8 min to evaporate and crystallize the solution to obtain the target product Cs2In 0.695 Cl5(H2O):0.005Sb 3+ , 0.2568Yb 3+ , 0.0428Er 3+, where Yb:Er=6∶1.

[0040] Figure 3 This shows that the down-conversion luminescence intensity of the product prepared in Example 5 is the highest. Figure 5 It can be seen that in the temperature range of 303 K-543 K, the fluorescence intensity first weakens as the temperature increases, and after the temperature reaches 533 K, the intensity remains unchanged.

[0041] Example 6 Weigh 2 mmol of high-purity (99.9%) CsCl and 0.695 mmol InCl3 and add them to the reaction vessel. Weigh 1 mmol of SbCl3 and dissolve it in 20 mL of distilled water to make it 5% mol / L. Weigh 2 mmol of YbCl3 and dissolve it in 10 mL of distilled water to make it 20% mol / L. Weigh 1 mmol of ErCl3 and dissolve it in 10 mL of distilled water to make it 10% mol / L. Take 0.1 mL, 1.35 mL and 0.3 mL of SbCl3, YbCl3 and ErCl3 solutions, respectively, and drop them into the reaction vessel. Then add 2 mL of distilled water and stir for 15 min until all the raw materials are dissolved to form a clear and transparent solution. Heat it at 453 K for 20 min to evaporate and crystallize the solution to obtain the target product Cs2In 0.695 Cl5(H2O):0.005Sb 3+ , 0.27Yb 3+ , 0.03Er 3+ , where Yb:Er=9:1.

[0042] Example 7 Weigh 2 mmol of high-purity (99.9%) CsCl and 0.695 mmol InCl3, add them to the reaction vessel, weigh 1 mmol of SbCl3 and dissolve it in 20 mL of distilled water to make it 5% mol / L, weigh 2 mmol of YbCl3 and dissolve it in 10 mL of distilled water to make it 20% mol / L, weigh 1 mmol of ErCl3 and dissolve it in 10 mL of distilled water to make it 10% mol / L, respectively, take 0.1 mL, 1.385 mL and 0.231 mL of SbCl3, YbCl3 and ErCl3 solutions and drop them into the reaction vessel, then add 2 mL of distilled water and stir for 15 min until all the raw materials are dissolved to form a clear and transparent solution, heat it at 533K for 7 min to evaporate and crystallize the solution to obtain the target product Cs2In 0.695 Cl5(H2O):0.005Sb 3+ , 0.277Yb 3+ , 0.023Er3+ , where Yb:Er=12∶1.

[0043] Figure 2 Cs2In was prepared for Example 3-7 1-x-y-z Cl5(H2O):xSb 3+ ,yYb 3+ ,zEr 3+ XRD patterns of the composites, wherein the Yb / Er doping ratios are 1:1, 3:1, 6:1, 9:1 and 12:1.

[0044] Said by Sb 3+ Doping Cs2InCl5(H2O) to obtain 0D indium-based perovskite material Cs2In 1-x Cl5(H2O):xSb 3 + , achieving down-conversion luminescence.

[0045] During the experiment, it was found that doping a small amount of Sb 3+ ions, the luminescence intensity of the originally weakly luminescent Cs2InCl5(H2O) indium-based perovskite material has been greatly enhanced. Under the excitation of ultraviolet light with a wavelength of 365 nm, Cs2In 1-x Cl5(H2O):xSb 3+ The luminescence wavelength range is 400~1050 nm, and the sample emits yellow fluorescence. During the temperature change process, the fluorescence intensity decreases with the increase of temperature, showing fluorescence thermal quenching behavior.

[0046] Said by Sb 3+ , Yb 3+ and Er 3+ Ion co-doping Cs2InCl5(H2O) to obtain 0D indium-based perovskite material Cs2In 1-x-y-z Cl5(H2O):xSb 3+ ,yYb 3+ ,zEr 3+ , achieving up- and down-conversion luminescence, and having fluorescence anti-thermal quenching behavior during the up-conversion temperature change process.

[0047] During the experiment, it was found that doping a small amount of Sb 3+ , Yb 3+ and Er 3+ Ions, 0D indium-based perovskite material Cs2In 1-x-y-z Cl5(H2O):xSb 3+ ,yYb 3+ ,zEr 3+ The 0D indium-based perovskite material Cs2In has achieved up- and down-conversion luminescence. 1-x-y-z Cl5(H2O):xSb3+ ,yYb 3+ ,zEr 3+ They all respond to ultraviolet light (≤400 nm) excitation light sources, with differences in luminescence intensity. The luminescence wavelength range is 400~1050 nm, and the samples emit yellow fluorescence. Under the excitation of ultraviolet light with a wavelength of 365 nm, the emission peak at 606 nm was observed, showing excellent luminescence performance. In temperature sensing, the fluorescence intensity decreases with increasing temperature and remains unchanged to a certain extent. Under the excitation of near-infrared wavelengths (such as 980 nm), the 0D indium-based perovskite material Cs2In 1-x-y-z Cl5(H2O):xSb 3+ ,yYb 3+ ,zEr 3+ The emission wavelengths are between 509-540 nm, 540-565 nm, 637-700 nm and 770-830 nm, respectively, and the emission center wavelengths are 523 nm, 550 nm, 658 nm and 801 nm, respectively. The samples emit green fluorescence. In temperature sensing, the fluorescence intensity increases with increasing temperature, showing fluorescence anti-thermal quenching behavior.

[0048] The endpoints and any values ​​of the scope disclosed in the present invention are not limited to the precise scope or value, and these scopes or values ​​should be understood to include values ​​close to these scopes or values. For numerical ranges, the endpoint values ​​of each scope, the endpoint values ​​of each scope and the individual point values, and the individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be regarded as specifically disclosed in this article. Hereinafter, in principle, each technical solution can be combined with each other to obtain a new technical solution, which should also be regarded as specifically disclosed in this article.

[0049] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, a person skilled in the art can still modify or make equivalent substitutions to the specific implementations of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention are within the scope of protection of the claims of the present invention to be approved.

Claims

1. A zero-dimensional indium-based perovskite material with up-conversion and down-conversion luminescence, characterized in that: The chemical formula of the zero-dimensional indium-based perovskite material is Cs2In 1-x-y-z Cl5(H2O):xSb 3+ ,yYb 3+ ,zEr 3+ , where 0.001≤x≤0.1, 0≤y≤0.3, 0≤z≤0.3, y+z=0.

3.

2. The zero-dimensional indium-based perovskite material with up-conversion and down-conversion luminescence according to claim 1, characterized in that: The zero-dimensional indium-based perovskite material has up-conversion and down-conversion luminescence properties. Under ultraviolet light excitation, the zero-dimensional indium-based perovskite material emits yellow fluorescence; under near-infrared light excitation, the zero-dimensional indium-based perovskite material emits green fluorescence.

3. The zero-dimensional indium-based perovskite material with up- and down-conversion luminescence according to claim 1, characterized in that: The zero-dimensional indium-based perovskite material has anti-thermal quenching behavior during up-conversion luminescence in the temperature range of 303-543 K.

4. The zero-dimensional indium-based perovskite material with up-conversion and down-conversion luminescence according to claim 1, characterized in that: Under ultraviolet light excitation, the zero-dimensional indium-based perovskite material emits light at a wavelength between 400 and 1050 nm.

5. The zero-dimensional indium-based perovskite material with up- and down-conversion luminescence according to claim 1, characterized in that: Under near-infrared light excitation, the emission wavelengths of the zero-dimensional indium-based perovskite material are between 509-540 nm, 540-565 nm, 637-700 nm and 770-830 nm, respectively.

6. A method for preparing a zero-dimensional indium-based perovskite material with up- and down-conversion luminescence according to claim 1, characterized in that: include: A cesium-containing compound, an indium-containing compound, an antimony-containing compound, an ytterbium-containing compound and an erbium-containing compound are added into distilled water and dispersed uniformly to obtain a solution; The obtained solution is heated, evaporated and crystallized to obtain the zero-dimensional indium-based perovskite material.

7. A method for preparing a zero-dimensional indium-based perovskite material with up- and down-conversion luminescence according to claim 6, characterized in that: The molar ratio of the cesium-containing compound, the indium-containing compound, the antimony-containing compound, the ytterbium-containing compound and the erbium-containing compound is 2:0.695:0.005:(0.15-0.277):(0.15-0.023).

8. A method for preparing a zero-dimensional indium-based perovskite material with up- and down-conversion luminescence according to claim 6, characterized in that: The cesium-containing compound is cesium chloride, the indium-containing compound is indium chloride, the antimony-containing compound is antimony chloride, the ytterbium-containing compound is ytterbium chloride, and the erbium-containing compound is erbium chloride.

9. A method for preparing a zero-dimensional indium-based perovskite material with up- and down-conversion luminescence according to claim 6, characterized in that: The heating condition is heating at a temperature of 373-573 K for 5-20 min.

10. Application of the zero-dimensional indium-based perovskite material with up-conversion and down-conversion luminescence according to any one of claims 1 to 5 in the field of non-contact temperature sensing.

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