Stained glass for photovoltaic power generation and preparation method thereof

Abstract

The present application relates to the field of high-temperature colored glaze ink for glass painting, and specifically to a kind of colored glaze for photovoltaic power generation and its preparation method. A preparation method of colored glaze for photovoltaic power generation, comprising the following steps: cutting and edging: cutting a tempered glass sheet into a tempered glass substrate, and grinding the tempered glass substrate to obtain a glass to be painted; printing and drying: cleaning the glass to be painted and digitally printing it with high-temperature colored glaze ink, and then drying to obtain printed glass; tempering: heating and air-cooling the printed glass to obtain a colored glaze for photovoltaic power generation; the high-temperature colored glaze ink includes a metal complex. The present application uses a metal complex to digitally print a high-precision pattern, and then tempering allows the metal complex to oxidize and form agglomerates of 5μm and above. These agglomerates can generate structural colors while allowing light to reach the electromagnetic sheet behind the colored glass for optical power generation.

Description

Technical Field

[0001] The present application relates to the field of high-temperature colored glaze ink for glass painting, and in particular to a colored glass for photovoltaic power generation and a preparation method thereof. Background Art

[0002] Currently, amidst the energy crisis, energy conservation and environmental protection have become increasingly important concerns, with photovoltaic power generation being a key area of ​​focus. Photovoltaic power generation utilizes the photovoltaic effect at the interface of semiconductors to directly convert light energy into electricity. A key component of this technology is the photovoltaic panel, which consists of an electromagnetic sheet, a protective film, and protective glass. The electromagnetic sheet absorbs light energy and converts it into electricity. Because the sheet is relatively fragile, two protective films are installed on either side of the sheet, and protective glass is then installed on the side away from the sheet to form a photovoltaic panel. These panels can be used standalone or mounted on building walls and roofs, transforming these areas into power generation areas and creating green buildings.

[0003] In the existing technology, people have new requirements for these photovoltaic panels installed on the exterior walls of buildings. They hope to have high-precision exquisite patterns on them, which can play a decorative role while generating electricity. However, conventional light-transmitting pigments, such as the HighChroma OIVP series produced by Xiamen Handun Optical Technology Co., Ltd., have a particle size range of 10-24μm; the pearlescent powder produced by Dongguan Chengshi Chemical Co., Ltd. has a particle size range of 5-60μm. These pigments cannot be digitally printed because the maximum output hole diameter of digital printing is 1μm. In addition, the pigments in the high-temperature glaze inks conventionally used for digital printing are all metal oxides. Such high-temperature glaze inks are easily reduced in the light transmittance of the protective glass when digitally printed on it, affecting the power generation efficiency of the photovoltaic panels. Summary of the Invention

[0004] To address the problem of existing optical pigments being unable to be digitally printed, photovoltaic panels used for building exteriors are unable to meet people's needs for both normal power generation and high-precision, exquisite patterns. This application provides a method for preparing stained glass for photovoltaic power generation. This method uses metal complexes to digitally print high-precision patterns, and then tempers the metal complexes to oxidize and form aggregates of 5 μm or larger. These aggregates produce structural colors while allowing light to reach the electromagnetic sheet behind the stained glass for optical power generation.

[0005] In a first aspect, the present application provides a method for preparing stained glass for photovoltaic power generation, which adopts the following technical solution:

[0006] A method for preparing stained glass for photovoltaic power generation comprises the following steps:

[0007] Cutting and edging: Cut the tempered glass original sheet into tempered glass substrates, and then perform edge grinding on the tempered glass substrates to obtain the glass to be painted;

[0008] Printing and drying: After cleaning the glass to be painted, digitally print it with high-temperature colored glaze ink, and then dry it to obtain the printed glass;

[0009] Tempering: The printed glass is heated and air-cooled to obtain painted glass for photovoltaic power generation;

[0010] The high-temperature colored glaze ink includes a metal complex.

[0011] By employing this technical solution, using metal complexes with particle sizes less than 1μm as components of high-temperature colored glaze inks, combined with digital printing technology, it is possible to create extremely high-precision patterns on tempered glass surfaces. This level of precision not only satisfies visual aesthetics but also provides greater creative scope for photovoltaic panel design, making the products more personalized and artistic.

[0012] During the heating and cooling process, the metal complex decomposes into metal oxides and forms ordered agglomerates with a particle size of 5μm or larger. These agglomerates produce rich and natural colors through complex optical effects such as light scattering, reflection, or interference. This not only enhances the product's aesthetic appeal but also cleverly utilizes the physical properties of light to optimize its efficiency.

[0013] First, these aggregates simultaneously generate structural color and allow light to reach the electromagnetic sheet behind the stained glass for optical power generation. Furthermore, when the metal complex forms aggregates, gaps remain between the aggregates, further increasing light transmittance and thus ensuring that the efficiency of photovoltaic power generation is not affected.

[0014] The tempered glass substrate is extremely strong and weather-resistant, able to withstand harsh outdoor environments. The metal oxide pigment layer also has excellent stability and durability, and is not prone to fading or falling off, ensuring the long-term beauty and service life of the stained glass.

[0015] This stained glass not only generates photovoltaic power but also offers decorative artistic value. It can transform building exterior walls, rooftops, and other areas into power generation areas, while also enhancing the building's aesthetics and cultural significance. This versatility makes the product promising for broad application in green buildings, smart homes, and other fields.

[0016] Preferably, the metal complex comprises at least one of hexaaminecobalt, ferric thiocyanate, magnesium citrate, copper acetate peptide and vanadyl acetylacetonate.

[0017] By employing the aforementioned technical solution, complexes such as hexaaminecobalt, ferric thiocyanate, magnesium citrate, copper acetate peptide, and vanadyl acetylacetonate can be formed into sufficiently small particles, less than 1 μm, in aqueous solution or appropriate solvents, enabling them to be precisely deposited on the surface of tempered glass using digital printing technology. This high-precision deposition capability is key to achieving fine patterns.

[0018] These complexes have the characteristic of decomposing at certain temperatures. During the stained glass production process, these complexes decompose into their corresponding metal oxides (such as cobalt oxide and iron oxide) through heating. This decomposition process is controllable, and the decomposition products can form orderly agglomerates on the glass surface.

[0019] Preferably, the mass fraction of the hexaammine cobalt in the high-temperature colored glaze ink is 10-25 wt %.

[0020] By adopting the above technical solution, the viscosity of the high-temperature glaze ink has a direct impact on its fluidity, printing accuracy, and pattern clarity. Excessive levels of hexaamminecobalt increase the viscosity of the high-temperature glaze ink, resulting in reduced fluidity and potentially causing printhead clogging or uneven printing. However, too low a content can result in unclear color rendering and a faded overall image.

[0021] Preferably, the mass fraction of the ferric thiocyanate in the high-temperature glaze ink is 15-22 wt %.

[0022] By adopting the above technical solution, ferric thiocyanate needs to maintain a certain stability in the high-temperature glaze ink to ensure that the high-temperature glaze ink does not undergo significant chemical changes during storage and use. If the ferric thiocyanate content is too low, the stability of the high-temperature glaze ink may decrease, affecting the quality and performance of the high-temperature glaze ink. The viscosity of the high-temperature glaze ink has a direct impact on the printing effect. The appropriate amount of ferric thiocyanate can help adjust the viscosity of the high-temperature glaze ink, giving it good fluidity, thereby ensuring a smooth printing process. Excessively high or low content may disrupt the viscosity balance of the high-temperature glaze ink, resulting in reduced print quality.

[0023] Preferably, in the tempering step, the heating temperature is 600-650°C.

[0024] By adopting the above technical solution, when the heating temperature exceeds a certain limit, the oxidation rate of the metal complex will rapidly accelerate. This will cause the oxidation reaction to proceed rapidly, resulting in a large number of oxide particles that may rapidly increase and aggregate, affecting the uniformity and aesthetics of the stained glass surface. Rapid oxidation of the metal complex at high temperatures may cause the color to deviate from the expected color, and this change may be difficult to control. Furthermore, due to the rapid oxidation rate, the resulting oxide may be unstable and prone to changes during subsequent handling or use.

[0025] When the heating temperature is too low, the oxidation rate of the metal complex is significantly reduced. This means that the generation of oxide particles is slow and they may not be evenly distributed on the stained glass surface. Excessively low heating temperatures may also lead to incomplete oxidation reactions, which can affect the color stability and durability of the stained glass.

[0026] Preferably, in the tempering step, the air cooling rate is 4-8°C / min.

[0027] While a faster cooling rate can shorten the cooling time, the aforementioned technical solution can also result in the metal complex oxidation reaction being interrupted before it is fully completed on the glass surface, potentially affecting the adhesion and stability of the particles. Excessively fast cooling rates can lead to excessively large temperature gradients on the glass surface, subjecting the oxidized particles to uneven stress during distribution and fixation. This uneven stress distribution can promote particle agglomeration or lead to uneven particle distribution, compromising the smoothness and aesthetics of the glass surface.

[0028] When the cooling rate is too slow, the glass remains at a higher temperature for a longer period of time, which can lead to excessive oxidation reactions of the metal complexes. If the cooling rate is too slow and improperly controlled, the formed oxidized particles may lose their adhesion due to prolonged high temperatures and fall off. These detached particles may contaminate the production line or affect subsequent processing.

[0029] Preferably, in the tempering step, oxygen is also added during heating.

[0030] By adopting the above technical solution, oxygen, as an oxidant, can accept electrons and reduce its own valence, thereby initiating or accelerating the oxidation reaction of the metal complex. During the oxidation reaction, the metal complex loses electrons and increases its valence to form the corresponding oxide. Normally, the oxidation reaction of the metal complex requires a higher temperature to proceed effectively. However, when oxygen is added, the presence of oxygen promotes the transfer of electrons and the increase in the reaction rate, allowing the oxidation reaction to begin at a lower temperature (such as 300-400°C).

[0031] The addition of oxygen allows the oxidation reaction to proceed smoothly at lower temperatures, avoiding the violent reactions and uncontrollable conditions that can occur at higher temperatures. This helps reduce stress concentration and cracking problems caused by overly violent reactions. The presence of oxygen promotes electron transfer and increases the reaction rate, thereby improving oxidation efficiency. This means that more and more stable oxides can be produced in the same amount of time, facilitating the subsequent tempering process.

[0032] Preferably, in the tempering step, the volume fraction of oxygen in the heating reaction container is 5-10%.

[0033] By adopting the above technical solution, when the oxygen volume fraction is too large, the oxygen concentration in the reaction vessel increases significantly, thereby promoting the contact and reaction between the metal complex and oxygen. However, too high an oxygen concentration will cause the oxidation reaction rate to be too fast, making the oxidation process difficult to control. This may lead to the formation of an oxide film that is not uniform or dense, and may even cause problems such as local overheating and stress concentration. Too low an oxygen concentration cannot fully exert the promoting effect of the oxidant, resulting in unsatisfactory efficiency and effect of the oxidation reaction.

[0034] In a second aspect, the present application provides a stained glass for photovoltaic power generation, which adopts the following technical solution:

[0035] A stained glass for photovoltaic power generation is prepared by the above-mentioned method for preparing stained glass for photovoltaic power generation.

[0036] By adopting the above technical solution, the advantages of the stained glass used for photovoltaic power generation over the existing technology are the same as the above preparation method, which will not be repeated here.

[0037] In summary, this application has the following beneficial effects:

[0038] 1. This application utilizes metal complexes in high-temperature glaze inks to enable smooth spraying of patterns. The tempering process then oxidizes the metal complexes to form metal oxides that aggregate, forming ordered aggregates with a particle size of 5 μm or greater. These aggregates, while producing structural color, allow light to reach the electromagnetic sheet behind the stained glass for optical power generation. Furthermore, the gaps between the aggregates further increase light transmittance, thereby ensuring that the efficiency of photovoltaic power generation is not affected.

[0039] 2. This stained glass not only generates photovoltaic power but also offers decorative artistic value. It can transform building exterior walls, roofs, and other areas into power generation areas, while also enhancing the building's aesthetics and cultural significance. This versatility makes this product promising for broad application in green buildings, smart homes, and other fields. DETAILED DESCRIPTION

[0040] The raw materials in this application include the following parts:

[0041] Hexaamminecobalt: a commercially available product with CAS number 10534-86-8 is used;

[0042] Ferric thiocyanate: a commercially available product with CAS number 4119-52-2 was used;

[0043] Magnesium citrate: a commercially available product with CAS number 144-23-0 is used;

[0044] Copper acetyl peptide: a commercially available product with CAS number 130120-57-9 was used;

[0045] Vanadyl acetylacetonate: a commercially available product with CAS number 3153-26-2;

[0046] Oxygen: commercially available product with CAS number 7782-44-7 was used;

[0047] The present application is further described in detail below with reference to the following examples and comparative examples.

[0048] Example 1

[0049] A method for preparing high-temperature colored glaze ink for glass inkjet printing comprises the following steps:

[0050] 1. Preparation of Glass Frit

[0051] Mix 6 mol of Zn(NO3)2.6H2O, 3 mol of Mg(NO3)2, 1.5 mol of LiNO3, 1 mol of Al(NO3)3.9H2O, and 0.3 mol of Zr(NO3)4.5H2O, add 1000 g of water and heat to dissolve to obtain material (A); dissolve 4 mol of HBO3 in 300 g of hot water to obtain material (B); dissolve 1 mol of TiCl4 in 200 g of hot water to obtain material (C); weigh 1500 g of silica sol with a SiO2 mass fraction of 40% to obtain material (D). Materials (A), (B), and (C) were sequentially added to material (D) under stirring at 200 rpm to obtain a mixed slurry, which was then formed into microspheres in a spray dryer at 15,000 rpm. Finally, the mixture was calcined at 590°C for 1.5 hours in a rotary calciner with an inner diameter of 89 mm and a length of 1,700 mm (φ89 × 1,700 mm) to obtain a glass frit.

[0052] (2) Mixing preparation

[0053] Weigh 200g of hexaaminecobalt and 750g of glass frit, add them to 10g of dispersant, and make up to 1000g with water. At this time, the mass fraction of hexaaminecobalt in the high-temperature colored glaze ink is 20wt%. Then disperse it with a disperser at 2000rpm for 1h, and then grind it with a sand mill until the solid phase particles D99 are 1000nm. Filter through a 1000nm filter membrane to obtain the high-temperature colored glaze ink.

[0054] A method for preparing stained glass for photovoltaic power generation comprises the following steps:

[0055] Cutting and edging: Cut the tempered glass original sheet into 50cm*50cm tempered glass substrates, and grind the tempered glass substrates to obtain the glass to be painted;

[0056] Printing and drying: After cleaning the glass to be painted, use 500g of high-temperature colored glaze ink to print the painting with a printing thickness of 30μm. Cover the entire surface with high-temperature colored glaze ink (partial coverage is also possible in actual applications. This application performs full coverage only to better compare the visible light transmittance). Then dry the printed glass.

[0057] Tempering: The stained glass is placed in a tempering furnace for heating and air cooling at a heating temperature of 630°C for 15 minutes, a cooling rate of 6°C / h, and a cooling time of 6 minutes to obtain stained glass for photovoltaic power generation.

[0058] Example 2-3

[0059] In Example 2-3, based on the preparation method of Example 1, the mass fraction of hexaamminecobalt was adjusted. The specific adjustments are shown in Table 1.

[0060] Comparative Example 1-2

[0061] Comparative Example 1-2 is based on the preparation method of Example 1, but the mass fraction of hexaamminecobalt is adjusted. The specific adjustment is shown in Table 1.

[0062] Comparative Example 3

[0063] Comparative Example 3: Based on the preparation method of Example 1, hexaamminecobalt was replaced with cobalt oxide, and other conditions remained unchanged.

[0064] Table 1 Mass fraction and performance test table of hexaamminecobalt of Examples 1-3 and Comparative Examples 1-3

[0065]

[0066] Performance Test The stained glass for photovoltaic power generation of Examples 1-3 and Comparative Examples 1-3 was subjected to the following performance tests. The test results are shown in Table 1:

[0067] 1. Light transmittance of glass

[0068] The light transmittance of stained glass used for photovoltaic power generation is measured according to GBA2680 "Determination of visible light transmittance of architectural glass".

[0069] 2. Adhesion of high temperature colored glaze ink

[0070] The adhesion fastness of high temperature colored glaze ink was determined according to the method of GB / T13217.7.

[0071] As shown in Table 1, comparing Examples 1-3 with Comparative Examples 1-3 shows that the visible light transmittance and adhesion strength of Examples 1-3 are much higher than those of Comparative Example 3. This indicates that using metal complexes instead of metal oxides in high-temperature enamel inks for digital printing on glass, followed by tempering, effectively oxidizes and aggregates the metal complexes, allowing the production of highly precise patterns on stained glass without affecting power generation. Direct digital printing of oxides on tempered glass, however, results in poor aggregation.

[0072] As the mass fraction of hexamminecobalt continues to increase, the visible light transmittance and adhesion fastness both show a trend of first increasing and then decreasing. This may be because as the mass fraction of hexamminecobalt continues to increase, hexamminecobalt continues to oxidize and the oxides continue to agglomerate. As the agglomerated particles increase, the light transmittance of the stained glass and the adhesion of the high-temperature glaze ink are improved; when the mass fraction of hexamminecobalt exceeds a certain range, the viscosity of the high-temperature glaze ink will increase, resulting in a decrease in fluidity, which may cause problems such as print head clogging or uneven printing, thereby affecting the light transmittance of the stained glass and the adhesion of the high-temperature glaze ink.

[0073] Examples 4-6

[0074] Example 4 Based on the preparation method of Example 1, hexaamminecobalt is replaced by ferric thiocyanate, and other conditions remain unchanged.

[0075] In Example 5-6, based on the preparation method of Example 4, the mass fraction of ferric thiocyanate was adjusted. The specific adjustments are shown in Table 2.

[0076] Comparative Examples 4-5

[0077] Comparative Example 4-5 is based on the preparation method of Example 4, but the mass fraction of ferric thiocyanate is adjusted. The specific adjustment is shown in Table 2.

[0078] The stained glass for photovoltaic power generation of Examples 4-6 and Comparative Examples 4-5 were subjected to the above performance tests, and the test results are shown in Table 2.

[0079] Table 2 Mass fraction and performance test table of ferric thiocyanate of Example 1, Examples 4-6 and Comparative Examples 4-5

[0080] project Example 1 Example 4 Example 5 Example 6 Comparative Example 4 Comparative Example 5 Ferric thiocyanate / wt% / 20 15 22 13 25 Visible light transmittance / % 92.5 92.1 82.3 84.7 77.6 79.8 Adhesion fastness / % 94.7 94.5 89.4 93.7 86.5 91.8

[0081] Referring to Table 2, by comparing Example 1, Examples 4-6 and Comparative Examples 4-5, it can be seen that ferric thiocyanate can still be used in this application. In comparison, the effect of hexaamminecobalt is slightly better than that of ferric thiocyanate, and Example 1 is preferred.

[0082] As the mass fraction of ferric thiocyanate continues to increase, the visible light transmittance and adhesion fastness both show a trend of first increasing and then decreasing. This may be because as the mass fraction of ferric thiocyanate continues to increase, ferric thiocyanate continues to oxidize, and the oxides continue to agglomerate. As the agglomerated particles increase, the light transmittance of the stained glass and the adhesion of the high-temperature glaze ink are improved; when the mass fraction of ferric thiocyanate exceeds a certain range, the viscosity of the high-temperature glaze ink will increase, resulting in a decrease in fluidity, which may cause problems such as print head clogging or uneven printing, thereby affecting the light transmittance of the stained glass and the adhesion of the high-temperature glaze ink.

[0083] Examples 7-8

[0084] In Examples 7-8, based on the preparation method of Example 1, the heating temperature was adjusted. The specific adjustments are shown in Table 3.

[0085] Comparative Examples 6-7

[0086] Comparative Examples 6-7 are based on the preparation method of Example 1, except that the heating temperature is adjusted. The specific adjustments are shown in Table 3.

[0087] The stained glass for photovoltaic power generation of Examples 7-8 and Comparative Examples 6-7 were subjected to the above performance tests, and the test results are shown in Table 3.

[0088] Table 3 Heating temperature and performance test table of Example 1, Examples 7-8 and Comparative Examples 6-7

[0089]

[0090]

[0091] Referring to Table 3, by comparing Example 1, Examples 7-8, and Comparative Examples 6-7, it can be seen that as the heating temperature continues to increase, the visible light transmittance and adhesion strength show a trend of first increasing and then decreasing. This may be because as the heating temperature continues to increase, the generated oxide particles gradually aggregate together, thereby increasing the light transmittance of the stained glass and the adhesion of the high-temperature glaze ink; when the heating temperature exceeds a certain range, the oxidation reaction proceeds in large quantities in a short period of time. Due to the excessively fast oxidation rate, the generated oxides may be unstable, thereby reducing the light transmittance of the stained glass and the adhesion of the high-temperature glaze ink.

[0092] Examples 9-10

[0093] In Examples 9-10, based on the preparation method of Example 1, the cooling rate was adjusted. The specific adjustments are shown in Table 4.

[0094] Comparative Examples 8-9

[0095] In Comparative Examples 8-9, based on the preparation method of Example 1, the cooling rate was adjusted. The specific adjustments are shown in Table 4.

[0096] The stained glass for photovoltaic power generation of Examples 9-10 and Comparative Examples 8-9 was subjected to the above performance tests, and the test results are shown in Table 4.

[0097] Table 4 Cooling rate and performance test table of Example 1, Examples 9-10 and Comparative Examples 8-9

[0098] project Example 1 Example 9 Example 10 Comparative Example 8 Comparative Example 9 Cooling rate / (℃ / min) 6 4 8 3 9 Visible light transmittance / % 92.5 84.0 89.7 78.9 85.5 Adhesion fastness / % 94.7 89.9 92.3 88.5 91.2

[0099] Referring to Table 4, by comparing Example 1, Examples 9-10, and Comparative Examples 8-9, it can be seen that as the cooling rate continues to increase, the visible light transmittance and adhesion strength both show a trend of first increasing and then decreasing. This may be because as the cooling rate continues to increase, the oxidation reaction continues to proceed in an orderly manner, and the oxides gradually agglomerate, thereby increasing the light transmittance of the stained glass and the adhesion of the high-temperature glaze ink. When the cooling rate exceeds a certain range, the oxidation reaction of the metal complex may be rapidly interrupted before it is completely completed on the glass surface, which may affect the adhesion and stability of the particles, thereby reducing the light transmittance of the stained glass and the adhesion of the high-temperature glaze ink.

[0100] Examples 11-13

[0101] Example 11 is based on the preparation method of Example 1, with oxygen being introduced during heating, the volume fraction of oxygen being 8% of the tempering furnace, the heating temperature being 610° C., and other conditions remaining unchanged.

[0102] In Examples 12-13, based on the preparation method of Example 11, the volume fraction of oxygen was adjusted. The specific adjustments are shown in Table 5.

[0103] Comparative Examples 10-11

[0104] Comparative Examples 10-11 are based on the preparation method of Example 11, except that the volume fraction of oxygen is adjusted. The specific adjustments are shown in Table 5.

[0105] The stained glasses for photovoltaic power generation of Examples 11-13 and Comparative Examples 10-11 were subjected to the above performance tests, and the test results are shown in Table 5.

[0106] Table 5 Oxygen volume fraction and performance test table of Example 1, Examples 11-13 and Comparative Examples 10-11

[0107]

[0108] Referring to Table 5, by comparing Example 1, Examples 11-13 and Comparative Examples 10-11, it can be seen that introducing oxygen during heating can more effectively improve the visible light projection ratio and adhesion strength at a lower heating temperature. This may be because the lower heating temperature makes the oxidation reaction milder, while the increase in oxygen increases the overall degree of oxidation, which not only speeds up the progress of the oxidation reaction and improves the visible light projection ratio, but also makes the entire oxidation reaction milder, thereby improving adhesion strength.

[0109] Examples 14-16

[0110] Examples 14-16 are based on the preparation method of Example 1, except that the type of metal complex is adjusted, and other conditions remain unchanged. The specific adjustments are shown in Table 6.

[0111] The stained glass for photovoltaic power generation of Examples 14-16 was subjected to the above performance tests, and the test results are shown in Table 6.

[0112] Table 6 Types and performance test table of metal complexes of Example 1 and Examples 14-16

[0113] project Example 1 Example 14 Example 15 Example 16 Types of metal complexes Hexaamminecobalt magnesium citrate Copper acetate peptide Vanadyl acetylacetonate Visible light transmittance / % 92.5 91.8 91.6 91.3 Adhesion fastness / % 94.7 94.1 93.5 93.7

[0114] Referring to Table 6, it can be seen from the comparison between Example 1 and Examples 14-16 that magnesium citrate, copper acetate peptide and vanadyl acetylacetonate can all be used in this application.

[0115] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. A method for preparing stained glass for photovoltaic power generation, characterized in that: The following steps are involved: Cutting and edging: Cut the tempered glass original sheet into tempered glass substrates, and then perform edge grinding on the tempered glass substrates to obtain the glass to be painted; Printing and drying: After cleaning the glass to be painted, digitally print it with high-temperature colored glaze ink, and then dry it to obtain the printed glass; Tempering: The printed glass is heated and air-cooled to obtain painted glass for photovoltaic power generation; The high-temperature colored glaze ink includes a metal complex, which decomposes into metal oxides and forms ordered agglomerates with a particle size of 5 μm or more during heating and air cooling, and the metal complex includes at least one of hexaamminecobalt nitrate, ferric thiocyanate, magnesium citrate, copper acetate peptide, and vanadyl acetylacetonate; In the tempering step, the heating temperature is 600-650°C; In the tempering step, oxygen is also added during heating, and the volume fraction of the oxygen in the heating reaction container is 5-10%; The air cooling rate is 4-8°C / min.

2. The method for preparing stained glass for photovoltaic power generation according to claim 1, characterized in that: The mass fraction of the hexaammine cobalt in the high-temperature colored glaze ink is 10-25 wt %.

3. The method for preparing stained glass for photovoltaic power generation according to claim 1, characterized in that: The mass fraction of the ferric thiocyanate in the high-temperature colored glaze ink is 15-22 wt %.

4. A stained glass for photovoltaic power generation, characterized by: The stained glass for photovoltaic power generation is prepared according to the preparation method of any one of claims 1 to 3.

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