Luminescence regulation and control material, preparation method thereof and optical product

Abstract

The invention relates to a luminescence regulation material, a preparation method thereof and an optical product. The general chemical formula of the luminescence regulation material is Na < 0.5 > Bi < 2.5 > Nb < 2-x > TaxO9: 0.01 Er / 0.01 Tm / 0.01 Yb, and x is greater than or equal to 0 and less than or equal to 2. The luminescence regulation and control material adopts an electron capture type inorganic photochromic material matrix Na < 0.5 > Bi < 2.5 > Nb < 2-x > Ta < x > O < 9 >, is doped with rare earth ions Er, Tm and Yb, can realize visible light and infrared light emission under 980 nm excitation, shows high modulation capability and excellent photochromic characteristics, and is beneficial to wide application.

Description

Technical Field

[0001] The present invention relates to the technical field of luminescent materials, and in particular to a luminescent regulating material, a preparation method thereof and an optical product. Background Art

[0002] With the rapid development of digital information technology, the security of information during storage and transmission is crucial to protecting personal interests and national security. Compared with traditional storage media, optical storage media have shown obvious advantages with their high storage density, long service life, environmental sustainability and non-contact operation. Photochromic materials, as a special type of electron-trapping photoresponsive materials, have attracted great attention due to their potential applications in rewritable optical storage, information encryption, anti-counterfeiting labels, photoelectric switches, visual codes and passive photometers. These materials can achieve reversible changes in their optical properties (such as reflectivity, absorbance and transmittance) between two states under the stimulation of light or heat.

[0003] Recently, luminescence modulation materials related to the photochromic phenomenon have attracted widespread attention, especially as dual-mode optical writing and reading material devices, they are regarded as one of the most promising recording media in the digital age. Compared with thermal, mechanical and humidity stimulation, light stimulation has laid a solid foundation for the widespread application of photochromism and luminescence modulation due to its easy access and highly controllable characteristics. The superiority of this technology lies in its ability to provide safer and more reliable data storage solutions, which indicates its important application prospects in the field of information technology in the future. However, there are still challenges in achieving high-brightness luminescence modulation and efficient photochromic performance. At the same time, current research on luminescence band modulation is mainly limited to the visible light range, and the exploration of infrared light regulation is relatively lacking. Summary of the invention

[0004] Based on this, it is necessary to provide a luminescence regulating material and a preparation method thereof in order to address the problem of how to exhibit high modulation capability and excellent photochromic properties in the visible light and infrared light emission bands.

[0005] A luminescence regulating material, the chemical formula of the luminescence regulating material is: Na 0.5 Bi 2.5 Nb 2-x Ta x O9:0.01Er / 0.01Tm / 0.01Yb, where 0≤x≤2.

[0006] The above-mentioned luminescence control material adopts an electron-trapping inorganic photochromic material matrix Na 0.5 Bi 2.5 Nb 2-x Ta xO9, and doped with rare earth ions Er, Tm and Yb, can achieve visible light and infrared light emission under 980nm excitation, and at the same time show high modulation ability and excellent photochromic properties, which is conducive to wide application.

[0007] In a feasible implementation, the chemical formula of the luminescence regulating material is: Na 0.5 Bi 2.5 Nb 2-x Ta x O9:0.01Er / 0.01Tm / 0.01Yb, wherein x is 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9 or 2.

[0008] A method for preparing a luminescence regulating material comprises the following steps:

[0009] Based on the chemical formula Na 0.5 Bi 2.5 Nb 2-x Ta x O9: 0.01Er / 0.01Tm / 0.01Yb stoichiometric ratio, wherein 0≤x≤2; uniformly mixing sodium carbonate, bismuth oxide, niobium oxide, tantalum oxide, erbium oxide, thulium oxide and ytterbium oxide, and then pre-sintering the mixture to obtain a pre-sintered product after sufficient reaction; and

[0010] The pre-sintered product is granulated and then pressed into shape, and then subjected to a debonding treatment and a sintering treatment, and a luminescence regulating material is obtained after sufficient reaction.

[0011] The preparation method of the luminescence regulating material of the technical solution of the present invention is simple in process. The luminescence regulating material prepared by the above preparation method adopts an electron-trapping inorganic photochromic material matrix Na 0.5 Bi 2.5 Nb 2-x Ta x O9, and doped with rare earth ions Er, Tm and Yb, can achieve visible light and infrared light emission under 980nm excitation, and at the same time show high modulation ability and excellent photochromic properties, which is conducive to wide application.

[0012] In a feasible implementation, the temperature of the pre-sintering treatment is 950° C. to 1050° C., and the time of the pre-sintering treatment is 1.5 h to 2.5 h.

[0013] In a feasible implementation, the operation of granulating the pre-sintered product is: uniformly mixing the pre-sintered product with a binder.

[0014] In a feasible implementation, the temperature of the debonding treatment is 500° C. to 600° C., and the heat preservation time of the debonding treatment is 5 h to 6 h.

[0015] In a feasible implementation, the heating rate from the debonding treatment to the sintering treatment is 3° C. / min to 5° C. / min.

[0016] In a feasible implementation, the temperature of the sintering treatment is 1200° C. to 1250° C., and the holding time of the sintering treatment is 2 h to 3 h.

[0017] An optical product comprises the above-mentioned luminescence regulating material.

[0018] In the optical product of the technical solution of the present invention, the above-mentioned luminescence regulating material adopts an electron-trapping inorganic photochromic material matrix Na 0.5 Bi 2.5 Nb 2-x Ta x O9, and doped with rare earth ions Er, Tm and Yb, can achieve visible light and infrared light emission under 980nm excitation, and at the same time show high modulation ability and excellent photochromic properties, which is conducive to wide application.

[0019] In a feasible implementation, the optical product is a rewritable optical storage device, an information encryption device, an anti-counterfeiting label, a photoelectric switch, a visual code or a passive photometer. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a flow chart of a method for preparing a luminescence regulating material according to one embodiment of the present invention;

[0021] Figure 2 This is a scanning electron microscope characterization image of the luminescence regulating material of Example 2 of the present invention;

[0022] Figure 3 The up-conversion luminescence spectra of the luminescence regulating materials of Examples 1 to 6 of the present invention under 980nm excitation and before and after photochromism (405nm irradiation for 30 seconds);

[0023] Figure 4 It is the UV-visible light-near infrared reflection spectrum of the luminescence regulating material of Example 2 of the present invention before and after photochromism (405nm irradiation for 30 seconds). DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0026] The general chemical formula of the luminescence control material in one embodiment is: Na 0.5 Bi 2.5 Nb 2-x Ta x O9: 0.01Er / 0.01Tm / 0.01Yb, where 0≤x≤2. 0.5 Bi 2.5 Nb 2-x Ta x O9 is used as the electron-trapping inorganic photochromic material matrix and is doped with rare earth ions Er, Tm and Yb.

[0027] Based on the above-mentioned embodiments, the chemical formula of the luminescence regulating material is: Na 0.5 Bi 2.5 Nb 2-x Ta x O9: 0.01Er / 0.01Tm / 0.01Yb, wherein x is 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9 or 2. Further, when x is 0, the chemical formula of the luminescence control material is Na 0.5 Bi 2.5 Nb2O9: 0.01Er / 0.01Tm / 0.01Yb; when x is 0.5, the chemical formula of the luminescence control material is Na 0.5 Bi 2.5 Nb 1.5 Ta 0.5 O9: 0.01Er / 0.01Tm / 0.01Yb; when x is 1, the chemical formula of the luminescence control material is Na 0.5 Bi 2.5NbTaO9: 0.01Er / 0.01Tm / 0.01Yb; when x is 1.5, the chemical formula of the luminescence control material is Na 0.5 Bi 2.5 Nb 0.5 Ta 1.5 O9: 0.01Er / 0.01Tm / 0.01Yb; when x is 1.7, the chemical formula of the luminescence control material is Na 0.5 Bi 2.5 Nb 0.3 Ta 1.7 O9: 0.01Er / 0.01Tm / 0.01Yb; when x is 2, the chemical formula of the luminescence control material is Na 0.5 Bi 2.5 Ta2O9:0.01Er / 0.01Tm / 0.01Yb.

[0028] The photochromic mechanism mainly comes from the cation vacancies generated by the volatilization of alkali metal ions or the oxygen vacancies generated by the volatilization of O atoms during high-temperature sintering, which leads to the formation of color centers. The energy transfer between the luminescence center and the color center in the photoluminescence process of rare earth-doped photochromic materials is the principle of luminescence modulation.

[0029] The above-mentioned luminescence control material adopts an electron-trapping inorganic photochromic material matrix Na 0.5 Bi 2.5 Nb 2-x Ta x O9, and doped with rare earth ions Er, Tm and Yb, can achieve visible light and infrared light emission under 980nm excitation, and at the same time show high modulation ability and excellent photochromic properties, which is conducive to wide application.

[0030] See also Figure 1 A method for preparing a luminescence control material according to an embodiment of the present invention comprises the following steps:

[0031] S10, based on the chemical formula Na 0.5 Bi 2.5 Nb 2-x Ta x The stoichiometric ratio of O9:0.01Er / 0.01Tm / 0.01Yb, wherein 0≤x≤2; sodium carbonate, bismuth oxide, niobium oxide, tantalum oxide, erbium oxide, thulium oxide and ytterbium oxide are uniformly mixed, and then pre-sintered to obtain a pre-sintered product after sufficient reaction.

[0032] Among them, based on the chemical formula Na 0.5 Bi 2.5 Nb 2-x Ta xThe stoichiometric ratio of O9: 0.01Er / 0.01Tm / 0.01Yb refers to weighing various raw materials based on the molar ratio of each element in the above chemical formula. Furthermore, the use of high-purity raw materials ensures excellent luminescence performance of the sample.

[0033] The operation of uniformly mixing sodium carbonate, bismuth oxide, niobium oxide, tantalum oxide, erbium oxide, thulium oxide and ytterbium oxide is as follows: sodium carbonate, bismuth oxide, niobium oxide, tantalum oxide, erbium oxide, thulium oxide and ytterbium oxide are mixed with anhydrous ethanol and then ground until the anhydrous ethanol evaporates, and the above operation is repeated until a fully mixed and uniform mixture is obtained. The grinding can be performed manually or electrically, and the addition of anhydrous ethanol during the grinding process is conducive to making the raw materials more evenly dispersed. Furthermore, the above operation is repeated three or more times.

[0034] The purpose of the pre-sintering treatment is to promote the mutual diffusion and chemical reaction between the raw materials and generate a solid solution consistent with the phase structure of the designed sample. The operation of the pre-sintering treatment is: the ground raw materials are placed in an alumina crucible and placed in a muffle furnace for pre-sintering.

[0035] In a feasible implementation, the temperature of the pre-sintering treatment is 950°C to 1050°C, and the time of the pre-sintering treatment is 1.5h to 2.5h. Further, the temperature of the pre-sintering treatment may be but is not limited to 950°C, 960°C, 970°C, 980°C, 990°C, 1000°C, 1010°C, 1020°C, 1030°C, 1040°C or 1050°C, and the time of the pre-sintering treatment may be but is not limited to 1.5h, 1.6h, 1.7h, 1.8h, 1.9h, 2h, 2.1h, 2.2h, 2.3h, 2.4h or 2.5h. Further, the temperature of the pre-sintering treatment may be any value between 950°C and 1050°C, and the time of the pre-sintering treatment may be any value between 1.5h and 2.5h.

[0036] S20, granulating the pre-sintered product obtained in step S10 and then pressing it into a shape, and then performing a debonding treatment and a sintering treatment, and obtaining a luminescence control material after sufficient reaction.

[0037] The operation of compression molding is: molding by molding. The shape and size of the green body after molding are not limited.

[0038] In a feasible implementation, the operation of granulating the pre-sintered product is: mixing the pre-sintered product with a binder. Further, the pre-sintered product can be subjected to secondary grinding first, and then mixed with the binder. Among them, the operation of secondary grinding is: repeating the grinding more than twice according to the grinding method in step S10, and each grinding operation is: mixing the pre-sintered product with anhydrous ethanol and then grinding until the anhydrous ethanol evaporates, and repeating the above operation more than three times. After the secondary grinding, a uniformly dispersed pre-sintered powder is obtained, which is conducive to promoting the molding and dense structure formation in the subsequent sintering process. Further, the binder is polyvinyl alcohol (PVA). The plasticity of the powder can be increased after granulation.

[0039] In a feasible implementation, the temperature of the debonding treatment is 500°C to 600°C, and the insulation time of the debonding treatment is 5h to 6h. After the debonding treatment, the binder in the mixture can be removed. Further, the temperature of the debonding treatment may be but not limited to 500°C, 510°C, 520°C, 530°C, 540°C, 550°C, 560°C, 570°C, 580°C, 590°C or 600°C, and the insulation time of the debonding treatment may be but not limited to 5h, 5.5h or 6h. It should be noted that the temperature of the debonding treatment may be any value between 500°C and 600°C, and the insulation time of the debonding treatment may be any value between 5h and 6h.

[0040] In a feasible implementation, the heating rate from the debonding process to the sintering process is 3°C / min to 5°C / min. Further, the heating rate from the debonding process to the sintering process may be, but is not limited to, 3°C / min, 4°C / min or 5°C / min. It should be noted that the heating rate from the debonding process to the sintering process may be any value between 3°C / min and 5°C / min.

[0041] In a feasible implementation, the temperature of the sintering treatment is 1200°C to 1250°C, and the holding time of the sintering treatment is 2h to 3h. After the sintering treatment, the grain growth and volume shrinkage of the material can be promoted to form a dense structure. Furthermore, the temperature of the sintering treatment may be but not limited to 1200°C, 1210°C, 1220°C, 1230°C, 1240°C or 1250°C, and the holding time of the sintering treatment may be but not limited to 2h, 2.5h or 3h. It should be noted that the temperature of the sintering treatment can be any value between 1200°C and 1250°C, and the holding time of the sintering treatment can be any value between 2h and 3h.

[0042] The preparation method of the luminescence regulating material of the technical solution of the present invention is simple in process. The luminescence regulating material prepared by the above preparation method adopts an electron-trapping inorganic photochromic material matrix Na 0.5 Bi2.5 Nb 2-x Ta x O9, and doped with rare earth ions Er, Tm and Yb, can achieve visible light and infrared light emission under 980nm excitation, and at the same time show high modulation ability and excellent photochromic properties, which is conducive to wide application.

[0043] An optical product according to one embodiment includes the above-mentioned luminescence regulating material or a luminescence regulating material prepared by any of the above-mentioned methods for preparing a luminescence regulating material.

[0044] On the basis of the above-mentioned embodiments, the optical product is a rewritable optical storage device, an information encryption device, an anti-counterfeiting mark, a photoelectric switch, a visual code or a passive photometer. In other words, the luminescence control material of the present invention can be applied to the fields of rewritable optical storage, information encryption, anti-counterfeiting mark, photoelectric switch, visual code and passive photometer.

[0045] In the optical product of the technical solution of the present invention, the above-mentioned luminescence regulating material adopts an electron-trapping inorganic photochromic material matrix Na 0.5 Bi 2.5 Nb 2-x Ta x O9, and doped with rare earth ions Er, Tm and Yb, can achieve visible light and infrared light emission under 980nm excitation, and at the same time show high modulation ability and excellent photochromic properties, which is conducive to wide application.

[0046] With reference to the above implementation contents, in order to make the technical solution of the present invention more specific, clear and easy to understand, the technical solution of the present invention is now exemplified. However, it should be noted that the contents to be protected by the present invention are not limited to the following embodiments.

[0047] Example 1

[0048] This embodiment provides a luminescence control material and a preparation method thereof. The chemical formula of the luminescence control material is: Na 0.5 Bi 2.5 Nb 2-x Ta x O9: 0.01Er / 0.01Tm / 0.01Yb, wherein x=0, comprises the following steps:

[0049] (1) Based on the chemical formula Na 0.5 Bi 2.5 Nb 2-x Ta xO9: 0.01Er / 0.01Tm / 0.01Yb stoichiometric ratio, wherein x=0, weigh 0.5151g sodium carbonate, 11.5907g bismuth oxide, 5.3215g niobium oxide, 0.0383g erbium oxide, 0.0386g thulium oxide and 0.0394g ytterbium oxide, put each raw material into a mortar, add anhydrous ethanol to grind until the ethanol is completely volatilized, repeat this process three times to ensure uniform mixing; then put the ground raw material into an alumina crucible, put it into a muffle furnace and pre-sinter it to 1000°C, keep it warm for 2 hours, and obtain a pre-sintered product;

[0050] (2) The pre-sintered product is subjected to secondary grinding, and the grinding method in step (1) is repeated three times, each grinding operation is as follows: the pre-sintered product is mixed with anhydrous ethanol and then ground until the anhydrous ethanol evaporates, and the above operation is repeated three times; 8% polyvinyl alcohol (PVA) is added to the powder after the secondary grinding as a binder, and the powder is fully mixed to increase the plasticity of the powder, and then the powder is formed by molding; then, the sample is heated to 550°C in a muffle furnace and kept warm for 5 hours to remove PVA; then the temperature is increased to 1200°C at a heating rate of 3°C / min and kept warm for 2 hours to obtain the luminescence control material of Example 1.

[0051] Example 2

[0052] This embodiment provides a luminescence control material and a preparation method thereof. The chemical formula of the luminescence control material is: Na 0.5 Bi 2.5 Nb 2-x Ta x O9: 0.01Er / 0.01Tm / 0.01Yb, wherein x=0.5, is substantially the same as the preparation method of Example 1, except that the weight of the raw materials is different, specifically 0.5151 g of sodium carbonate, 11.5907 g of bismuth oxide, 4.6563 g of niobium oxide, 1.1048 g of tantalum oxide, 0.0383 g of erbium oxide, 0.0386 g of thulium oxide, and 0.0394 g of ytterbium oxide.

[0053] Example 3

[0054] This embodiment provides a luminescence control material and a preparation method thereof. The chemical formula of the luminescence control material is: Na 0.5 Bi 2.5 Nb 2-x Ta xO9: 0.01Er / 0.01Tm / 0.01Yb, wherein x=1, is substantially the same as the preparation method of Example 1, except that the weights of the raw materials are different, specifically 0.5151 g of sodium carbonate, 11.5907 g of bismuth oxide, 3.9911 g of niobium oxide, 2.2097 g of tantalum oxide, 0.0383 g of erbium oxide, 0.0386 g of thulium oxide, and 0.0394 g of ytterbium oxide.

[0055] Example 4

[0056] This embodiment provides a luminescence control material and a preparation method thereof. The chemical formula of the luminescence control material is: Na 0.5 Bi 2.5 Nb 2-x Ta x O9: 0.01Er / 0.01Tm / 0.01Yb, wherein x=1.5, is substantially the same as the preparation method of Example 1, except that the weight of the raw materials is different, specifically 0.5151 g of sodium carbonate, 11.5907 g of bismuth oxide, 2.6608 g of niobium oxide, 4.4193 g of tantalum oxide, 0.0383 g of erbium oxide, 0.0386 g of thulium oxide, and 0.0394 g of ytterbium oxide.

[0057] Example 5

[0058] This embodiment provides a luminescence control material and a preparation method thereof. The chemical formula of the luminescence control material is: Na 0.5 Bi 2.5 Nb 2-x Ta x O9: 0.01Er / 0.01Tm / 0.01Yb, wherein x=1.7, is substantially the same as the preparation method of Example 1, except that the weight of the raw materials is different, specifically 0.5151 g of sodium carbonate, 11.5907 g of bismuth oxide, 1.3304 g of niobium oxide, 6.6290 g of tantalum oxide, 0.0383 g of erbium oxide, 0.0386 g of thulium oxide, and 0.0394 g of ytterbium oxide.

[0059] Example 6

[0060] This embodiment provides a luminescence control material and a preparation method thereof. The chemical formula of the luminescence control material is: Na 0.5 Bi 2.5 Nb 2-x Ta xO9: 0.01Er / 0.01Tm / 0.01Yb, wherein x=2, is substantially the same as the preparation method of Example 1, except that the weights of the raw materials are different, specifically 0.5151 g of sodium carbonate, 11.5907 g of bismuth oxide, 8.8387 g of tantalum oxide, 0.0383 g of erbium oxide, 0.0386 g of thulium oxide, and 0.0394 g of ytterbium oxide.

[0061] Performance Test:

[0062] (1) Morphological characterization: The luminescence control material obtained in Example 2 was characterized by scanning electron microscopy. Figure 2 As shown. Figure 2 It can be seen that the luminescence regulating material obtained in Example 2 has a dense structure.

[0063] (2) Up-conversion spectrum test: The luminescence control materials obtained in Examples 1 to 6 were irradiated at 405 nm for 30 seconds under 980 nm excitation. The test results are as follows: Figure 3 As shown. Figure 3 It can be seen that when x increases from 0 to 0.5, the luminescence control degree of the green emission peak at 556nm becomes larger and larger, and the near-infrared emission peak intensity between 800nm ​​and 900nm is enhanced; when x increases from 0.5 to 2, the control degree of the green emission peak shows a downward trend, and at the same time, the near-infrared emission peak between 800nm ​​and 900nm increases less and less; the above shows that the luminescence control materials obtained in Examples 1 to 6 can realize visible light and infrared light emission under 980nm excitation, and at the same time exhibit a high modulation ability.

[0064] (3) UV-visible light-near infrared reflectance spectrum test: The luminescence control material obtained in Example 2 was irradiated at 405 nm for 30 seconds to obtain Figure 4 .Depend on Figure 4 It can be seen that compared with the sample before irradiation, the reflectivity of the sample after irradiation is greatly reduced, indicating that the luminescence regulation material obtained in Example 2 has excellent photochromic properties.

[0065] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A luminescence regulating material, characterized in that: The chemical formula of the luminescence regulating material is: Na 0.5 Bi 2.5 Nb 2- x Ta x O9:0.01Er / 0.01Tm / 0.01Yb, where 0≤x≤2.

2. The luminescence regulating material according to claim 1, characterized in that: The chemical formula of the luminescence regulating material is: Na 0.5 Bi 2.5 Nb 2-x Ta x O9:0.01Er / 0.01Tm / 0.01Yb, wherein x is 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9 or 2.

3. A method for preparing a luminescence regulating material, characterized in that: The steps include: Based on the chemical formula Na 0.5 Bi 2.5 Nb 2-x Ta x O9: 0.01Er / 0.01Tm / 0.01Yb stoichiometric ratio, wherein 0≤x≤2; uniformly mixing sodium carbonate, bismuth oxide, niobium oxide, tantalum oxide, erbium oxide, thulium oxide and ytterbium oxide, and then pre-sintering the mixture to obtain a pre-sintered product after sufficient reaction; and The pre-sintered product is granulated and then pressed into shape, and then subjected to a debonding treatment and a sintering treatment, and a luminescence regulating material is obtained after sufficient reaction.

4. The method for preparing the luminescence regulating material according to claim 3, characterized in that: The temperature of the pre-sintering treatment is 950° C. to 1050° C., and the time of the pre-sintering treatment is 1.5 h to 2.5 h.

5. The method for preparing the luminescence regulating material according to claim 3, characterized in that: The operation of granulating the pre-sintered product is: uniformly mixing the pre-sintered product with a binder.

6. The method for preparing the luminescence regulating material according to claim 3, characterized in that: The temperature of the debonding treatment is 500° C. to 600° C., and the heat preservation time of the debonding treatment is 5 h to 6 h.

7. The method for preparing the luminescence regulating material according to claim 3, characterized in that: The heating rate from the debonding treatment to the sintering treatment is 3° C. / min to 5° C. / min.

8. The method for preparing the luminescence regulating material according to claim 3, characterized in that: The temperature of the sintering treatment is 1200° C. to 1250° C., and the heat preservation time of the sintering treatment is 2 h to 3 h.

9. An optical product, characterized in that: Including the luminescence regulating material according to claim 1 or 2.

10. The optical product according to claim 9, characterized in that: The optical product is a rewritable optical storage device, an information encryption device, an anti-counterfeiting label, a photoelectric switch, a visual code or a passive photometer.

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