KR102265267B1 - Color Photovoltaic Module For Building - Google Patents

Abstract

The present invention relates to a color solar module applicable to a building and, more specifically, to a color solar module which easily adjusts a color, shows high color visibility while simultaneously maintaining high solar power generation efficiency and prevents discoloring even after a long period of use.

Description

Color Photovoltaic Module Applicable to Buildings {Color Photovoltaic Module For Building}

The present invention relates to a color photovoltaic module applicable to a building, and more particularly, it is easy to control the color and at the same time maintains the solar power generation efficiency at a high level, shows high color visibility, and also during long-term use It relates to a color photovoltaic module that does not cause discoloration.

Recently, as existing energy resources such as oil and coal are expected to be depleted, interest in alternative energy to replace them is increasing. Among them, a solar cell is spotlighted as a next-generation battery that converts solar energy into electrical energy. A plurality of such solar cells are connected in series or parallel by a ribbon, and are manufactured in the form of solar cells by a packaging process for protecting the plurality of solar cells.

In general, solar cells are installed on the roof or the roof of a building, but in an apartment or high-rise building, the size of the solar cell that can be installed on the roof or roof is limited, so it is difficult to efficiently utilize the sunlight. Accordingly, recently, research on a building-integrated solar cell that is installed on the exterior wall of a house or building and integrated with a house or building has been actively conducted.

When a building-integrated solar cell is applied, photoelectric conversion can be made in a large area of the outer wall of the building, so that sunlight can be used efficiently.

However, in order for the building-integrated solar cell to be successfully applied to the exterior wall of a building, it must have excellent exterior aesthetics. However, in the existing building-integrated solar cell, it was difficult to improve the aesthetics of the exterior because the solar cell and the wiring connected thereto are visible from the outside as it is, or only have a black color to maximize the absorption of sunlight.

As an alternative to this, Prior Document 1 (Korean Patent Application Laid-Open No. 10-2018-0002974) suggests a structure including a plurality of base parts, a coloring part, and a reflective part, but it is complicated and expensive in terms of process. There is this.

As described above, as for the conventional color photovoltaic module, a photovoltaic module coated with various colors was developed to give aesthetics to the monotonous black photovoltaic module, but the color pigment inhibited light transmission, resulting in a decrease in the efficiency of the photovoltaic module.

As an example, a color photovoltaic module using a light-absorbing pigment may be considered. However, when a light-absorbing pigment is used, there is a problem in that light transmittance is lowered. That is, since the light transmittance is low, the amount of light reaching the solar cell is small, so there is a problem in that the power generation efficiency is rapidly decreased.

On the other hand, Prior Document 2 (Korean Patent No. 10-2137258) relates to a variable color solar module using double-sided halftone dot printing and a manufacturing method thereof. By printing two-color halftone dots on both sides of the glass of the solar module, different colors can be obtained depending on the angle. Disclosed is a color solar module that expresses. However, the photovoltaic module according to Prior Document 2 has a problem in that it is difficult to implement a desired specific color, and there is a problem in that the photovoltaic power generation efficiency is lowered due to the printed halftone dots.

Prior art literature

Patent Literature

(Patent Document 0002) Korean Patent Publication No. 10-2018-0002974

(Patent Document 0001) Korean Patent No. 10-2137258

It is an object of the present invention to provide a color photovoltaic module that is easy to control color, maintains solar power generation efficiency at a high level, exhibits high color visibility, and does not cause discoloration even during long-term use. The purpose.

In order to solve the above problems, an embodiment of the present invention is a color solar module applicable to a building,

windshield; a color coating layer disposed on a lower surface of the windshield and coupled to the windshield; a filler layer disposed under the color coating layer; one or more photovoltaic cells fixedly disposed inside the filler layer; and a back sheet or tempered glass disposed under the filler layer, wherein the color coating layer is formed by a coating composition comprising TiO 2 and polysilazane having an average molecular weight of 25000 or less, an inorganic pigment, and a solvent. Provides color solar modules applicable to

In some embodiments of the present invention, the inorganic pigment may include a ceramic pigment including Al2O3 and SiO2 having plate-shaped particles having a diameter of 0.02 micrometers to 20 micrometers.

In some embodiments of the present invention, in the coating composition, the ratio of the solvent; TiO 2 , polysilazane having an average molecular weight of 25000 or less, and an inorganic pigment; may be 20:1 to 5:1.

In some embodiments of the present invention, 60 parts by weight of polysilazane; 10 to 30 parts by weight of TiO2; and 10 to 30 parts by weight of an inorganic pigment.

In some embodiments of the present invention, the color coating layer, the step of applying the coating composition to the windshield by a spray method; performing primary drying by applying hot air at a temperature of 140° to 160° in a state in which the coating composition is applied to the windshield; In a state in which the coating composition is applied to the windshield, heating is performed to a temperature of 180° to 250° by an oven in direct contact with the windshield. .

In some embodiments of the present invention, the solvent may include dibutyl ether.

According to an embodiment of the present invention, the color photovoltaic module can exhibit the effect of promoting external aesthetics when applied to BIPV by realizing color while maintaining high power generation efficiency.

According to an embodiment of the present invention, by implementing the color coating layer through a spray method instead of a vacuum deposition method, the manufacturing process of the color solar module can be made efficiently.

According to an embodiment of the present invention, an element for implementing a color is simpler than that of a conventional color photovoltaic module, thereby exhibiting the effect of reducing the manufacturing cost.

According to an embodiment of the present invention, the color sense of the color solar module is not discolored over time by stably maintaining the inorganic pigment that realizes the color feeling by polysilazane and protecting it from foreign substances penetrating from the outside. may have no effect.

According to one embodiment of the present invention, through the selection of inorganic pigments, it is possible to exhibit the effect of realizing the color sense of various colors as desired.

1 schematically shows an exploded perspective view of a color photovoltaic module according to an embodiment of the present invention.
2 schematically shows a stacked structure of a color photovoltaic module according to an embodiment of the present invention.
3 schematically shows steps of forming a color coating layer on a windshield according to an embodiment of the present invention.
4 schematically shows a curing process of a color coating layer according to an embodiment of the present invention.
5 schematically shows an internal structure of a color coating layer according to an embodiment of the present invention.
6 shows an experimental result of a color solar module according to an embodiment of the present invention.
7 shows an assembly of a color photovoltaic module according to an embodiment of the present invention.
8 shows a blue color photovoltaic module according to an embodiment of the present invention.

Various embodiments and/or aspects are now disclosed with reference to the drawings. In the following description, for purposes of explanation, numerous specific details are set forth to provide a thorough understanding of one or more aspects. However, it will also be recognized by one of ordinary skill in the art that such aspect(s) may be practiced without these specific details. The following description and accompanying drawings set forth in detail certain illustrative aspects of one or more aspects. These aspects are illustrative, however, and some of the various methods in principles of the various aspects may be employed, and the descriptions set forth are intended to include all such aspects and their equivalents.

As used herein, “embodiment”, “example”, “aspect”, “exemplary”, etc. may not be construed as an advantage or advantage in any aspect or design described above over other aspects or designs. .

In addition, the term “or” is intended to mean an inclusive “or” rather than an exclusive “or.” That is, unless otherwise specified or clear from context, "X employs A or B" is intended to mean one of the natural implicit substitutions. That is, X employs A; X employs B; or when X employs both A and B, "X employs A or B" may apply to either of these cases. It should also be understood that the term “and/or” as used herein refers to and includes all possible combinations of one or more of the listed related items.

Also, the terms "comprises" and/or "comprising" mean that the feature and/or element is present, but excludes the presence or addition of one or more other features, elements and/or groups thereof. should be understood as not

In addition, it will be understood that singular expressions such as "above" and "above" include plural expressions, unless explicitly indicated otherwise in this specification. Thus, as an example, a “component surface” includes one or more component surfaces.

Also, terms including an ordinal number, such as first, second, etc., may be used to describe various elements, but the elements are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component. and/or includes a combination of a plurality of related listed items or any of a plurality of related listed items.

In addition, the terms used herein are used only to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In this specification, terms such as "comprises" or "have" are intended to designate that the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

In addition, in the embodiments of the present invention, unless otherwise defined, all terms used herein, including technical or scientific terms, are generally understood by those of ordinary skill in the art to which the present invention belongs. have the same meaning as Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in an embodiment of the present invention, an ideal or excessively formal meaning is not interpreted as
Meanwhile, this patent is a research conducted with the support of the project 'Development of building-integrated color solar windows (project name: regional specialized industry promotion project)'.

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1 schematically shows an exploded perspective view of a color photovoltaic module according to an embodiment of the present invention. 2 schematically shows a laminated structure of a partially transparent color photovoltaic module according to an embodiment of the present invention.

As a color photovoltaic module applicable to a building according to an embodiment of the present invention, the windshield 100; a color coating layer 200 disposed on a lower surface of the windshield 100 and coupled to the windshield 100; a filler layer 300 disposed under the color coating layer 200; one or more photovoltaic cells 400 fixedly arranged inside the filler layer 300; and a back sheet or tempered glass 500 disposed under the filler layer 300 .

The color photovoltaic module applicable to the building may correspond to Building Integrated Photovoltaics (BIPV).

In another embodiment of the present invention, the photovoltaic cell may have a structure different from that of FIG. 1 together with a ribbon or the like.

In the present invention, the color coating layer 200 is disposed between the front glass 100 and the filler layer 300 rather than the upper side corresponding to the outside of the front glass 100, so that the color coating layer 200 is discolored by the external environment. etc. can be prevented.

Preferably, the filler layer 300 corresponds to a filler including Ethylene Vinyl Acetate (EVA), and in the case of the EVA filler, the inorganic pigment and polysilazane binder inside the color coating layer 200 do not discolor or change properties. The color coating layer 200 may have strong bonding properties at the interface with the polysilazane binder.

The color coating layer 200 is _{formed by a coating composition containing TiO 2} and polysilazane having an average molecular weight of 25000 or less, an inorganic pigment, and a solvent, a color solar module applicable to a building.

The polysilazane may be represented by the following chemical formula.

Here, R1, R2 and R3 are independently hydrogen, an alkyl group, an alkenyl group, a cycloalkyl group, an aryl group, a group in which the group directly connected to silicon is carbon, an alkylsilyl group, an alkylamino group, and an alkoxy group, and n is an integer.

Preferably, the polysilazane is preferably polysilazane in which R1, R2, and R3 are inorganic. In this case, light transmittance can be improved, and a change in properties of the inorganic pigment can be prevented.

More preferably, the polysilazane is preferably polysilazane in which R1, R2, and R3 are hydrogen. In this case, the polysilazane may be represented by the following chemical formula.

In this case, when the coating is applied, it can be cured to a hardness of 9H or more, and adhesion to glass can be improved. In particular, since it does not contain carbon, a high-purity SiO ₂ film can be formed upon curing.

Specifically, the polysilazane is a polymer compound having a Si-N-Si- bond, and through a heat treatment of forming a color coating layer 200 on the windshield 100 , the polysilazane is converted into _{silica (SiO 2 ).} A silica film is formed.

A silica film is prepared from polysilazane by such heat treatment, and a plurality of pores are formed inside the silica film while the solvent is removed in this process. The pores formed in this way lower the refractive index and reflectance and increase the transmittance of the color coating layer 200 that implements the color, so that the photovoltaic power generation cell according to light transmission in the area other than the area where the inorganic pigment is located in the color coating layer 200 ( 400) can increase the power generation efficiency.

On the other hand, polysilazane has very good reactivity with moisture compared to other silica precursors, so it has excellent hardness, hydrophilicity, durability, and adhesion to glass. ) can be formed, thereby maintaining the same color overall in the color photovoltaic module.

Preferably, the weight average molecular weight of the polysilazane is preferably 1000 to 25000 g/mol, more preferably 6,000 to 18,000 g/mol. When the weight average molecular weight is less than 1,000 g/mol, durability is lowered, and when it exceeds 25,000 g/mol, workability and coating properties are rather deteriorated.

The polysilazane is used in an amount of 3 to 13 parts by weight based on 100 parts by weight of the solvent. When the content is less than 3 parts by weight, the strength and durability of the membrane is reduced, and when it exceeds 13 parts by weight, a uniform coating layer cannot be formed, so the transmittance of the membrane and durability is rather deteriorated.

The color coating layer 200 formed of a coating composition including polysilazane, an inorganic pigment, and TiO ₂ exhibits high light transmittance, and has an advantage in that it is easy to form a layer on the windshield 100 .

The color coating layer 200 can protect from oxidation, deterioration and whitening of TiO2 and inorganic pigments by polysilazane, and can suppress yellowing even when exposed to sunlight for a long time. This can prevent the problem of falling.

Preferably, as will be described later _{, the coating composition including TiO 2} and polysilazane having an average molecular weight of 25000 or less, an inorganic pigment, and a solvent is applied on the windshield 100 by a spray method, followed by a special heat treatment to be described later. Thus, it is possible to further improve light transmittance and durability.

Preferably, the inorganic pigment includes a ceramic pigment including _{Al 2} O ₃ and SiO ₂ having plate-shaped particles having a diameter of 0.02 micrometers to 20 micrometers.

On the other hand, the TiO ₂ makes it possible to stably perform curing at a relatively low temperature in the curing step of the coating composition to be described later, and includes _{Al 2} O ₃ and SiO _{2 having plate-shaped particles of 0.02 micrometer to 20 micrometers.} In the ceramic pigment, _{by bonding with the plate-shaped Al 2} O ₃ or SiO ₂ , it can also serve to further improve the light transmission characteristic.

In an embodiment of the present invention, the ceramic pigment is Al ₂ O ₃ and SiO ₂ as a base material, and after pulverizing/classifying it, hydrolysis of the metal salt is performed, and then after the alkali salt is removed, drying and Through the heat treatment process, the water of crystallization is removed and the coating layer is crystallized.

Preferably, in the coating composition _{, the ratio of the solvent and TiO 2} , polysilazane having an average molecular weight of 25000 or less, and the inorganic pigment is 20:1 to 5:1.

First, TiO ₂ , polysilazane having an average molecular weight of 25000 or less, and an inorganic pigment are prepared, and then the prepared materials are mixed in a solvent. On the other hand, if _{the ratio of the solvent; and TiO 2} , polysilazane having an average molecular weight of 25000 or less, and the inorganic pigment; exceeds 20:1, the color coating layer 200 may not be uniformly formed, and the solvent; and TiO ₂ , polysilazane having an average molecular weight of 25000 or less, and inorganic pigment; when the ratio is lower than 5:1, the curing of polysilazane is not smoothly performed, and optical properties such as haze and light transmittance may be reduced. have.

On the other hand, _{with respect to the mass ratio of TiO 2} , polysilazane, and inorganic pigment in the coating composition, preferably, the coating composition comprises 60 parts by weight of polysilazane; 10 to 30 parts by weight of TiO2; and 10 to 30 parts by weight of an inorganic pigment.

More preferably, the mass ratio of the polysilazane and the inorganic pigment corresponds to 0.5:1 to 2:1.

In the above content, when the color coating layer 200 is formed, TiO _{2 is uniformly bonded around the plate-shaped Al 2} O ₃ particles and SiO ₂ particles, so that a better color can be exhibited, and also, the color coating layer Upon curing (200), _{the bonding structure of TiO2, Al 2} O ₃ particles and SiO ₂ particles, and polysilazane may be densely exhibited.

Preferably, _{the ratio of TiO 2} to the inorganic pigment is 0.8:1 to 2:1. _{When the content of TiO 2} is less than 0.8:1, the bonding structure of polysilazane is relatively weak, and thus durability is reduced, and light transmission loss may occur due to non-uniformity of the bonding structure. When the content of _{TiO 2} is greater than 2:1 _{, TiO 2} alone forms a crystal, and thus the overall appearance may be as if stained, and as a result, a problem in light transmittance may occur.

Preferably, the solvent is not limited as long as it can dissolve polysilazane, but specifically includes at least one of aromatic hydrocarbons, aliphatic hydrocarbons, esters, ethers, and alcohol-based organic solvents, and more preferably, The solvent includes dibutyl ether.

Dibutyl ether can homogeneously disperse a ceramic-based inorganic pigment including _{polysilazane, Al 2} O ₃ and SiO _{2 , and TiO 2} , and the coating composition can form the color coating layer 200 by a drying process to be described later. By promoting a more homogeneous change of polysilazane to silica during formation, more favorable light transmittance can be achieved in the binder portion.

3 schematically shows the steps of forming the color coating layer 200 on the windshield 100 according to an embodiment of the present invention.

The color coating layer 200, the front glass 100, such as plasma pretreatment to perform a surface pretreatment step (S100); applying the coating composition to the windshield 100 by a spray method (S200); performing primary drying by applying hot air at a temperature of 140° to 160° in a state in which the coating composition is applied to the windshield 100 (S300); In a state in which the coating composition is applied to the windshield 100, heating is performed to a temperature of 180° to 250° by an oven in direct contact with the windshield 100 (S400); It is formed on one surface of the glass 100 .

In step S100, the windshield 100 is cleaned by cerium oxide and alcohol, and then, plasma pretreatment is performed in an _{Ar/O 2 environment.}

In step S200, the coating composition is applied by a spray method. In the case of applying by the spray method as described above, it can have a great advantage in operation compared to the conventional deposition method.

In step S300, in a state in which hot air of a temperature of 140° to 160° is applied inside the sealed chamber, the windshield 100 on which the coating composition is applied on the upper surface moves along the conveyor. Preferably, the step S300 is performed for 2 to 10 minutes. More preferably, the step S300 is performed for 2 to 4 minutes.

In the present invention, in _{the curing of TiO 2} and polysilazane having an average molecular weight of 25000 or less, the polysilazane binder is not cured directly in an oven, but is cured by hot air in step S300 in advance. The TiO ₂ and the inorganic pigment may be more densely cured, and thus the overall light transmittance may be improved.

In step S400, heating is performed to a temperature of 180° to 250° by an oven in direct contact with the windshield 100 in a state coated on the windshield 100; is performed. Preferably, the step S400 is performed for 40 minutes to 1 hour and a half, more preferably 50 minutes to 1 hour and 10 minutes.

Through this process, the solvent is evaporated, and the color coating layer 200 may be firmly formed on one surface of the windshield 100 . Specifically, by performing step S400 after step S300 _{, TiO 2} is uniformly surrounded as a whole on the circumferential surface of _{the plate-shaped Al 2} O ₃ and SiO ₂ particles, which makes the matrix in the polysilazane more robust. can be effective.

4 schematically shows a curing process of the color coating layer 200 according to an embodiment of the present invention.

5 schematically shows the internal structure of the color coating layer 200 according to an embodiment of the present invention.

The plate-shaped particles of _{Al 2} O ₃ or SiO ₂ in the polysilazane binder are in a state of being a kind of coating by _{TiO 2 .} Light passing through the windshield 100 has high light transmittance, passes through a polysilazane binder with low light reflectance, and diffraction occurs when passing through plate-shaped particles of _{Al 2} O ₃ or SiO _{2 .} The plate-shaped particles of Al ₂ O ₃ or SiO ₂ transmit a fairly high amount of light, and some light is reflected at the interface (lower side) between the plate-shaped particles of _{Al 2} O ₃ or SiO _{2 and TiO 2 .}

The reflected light interferes with the reflected light reflected from the upper TiO ₂ layer to appear a color, and the wavelength of the final reflected light is determined according to the thickness of _{Al 2} O ₃ or SiO _{2 .} Therefore, the color of the reflected light may be determined by the diameter or thickness of the _{plate-shaped Al 2} O ₃ or SiO _{2 , and by selecting Al 2} O ₃ or SiO ₂ capable of expressing a desired color, a desired aesthetic feeling can be exhibited.

6 shows an experimental result of a color solar module according to an embodiment of the present invention.

As shown in FIG. 6 , the front glass 100 and the color coating layer 200 used in the color solar module according to the present invention have high light transmittance, thereby exhibiting high power generation efficiency, and under severe conditions. It can be confirmed that the structure and shape can be maintained continuously in

As shown in FIG. 6 , it can be seen that, in the overall color photovoltaic module of various colors, the Pmax value and the Fill Factor value hardly change even after the high-temperature, high-humidity temperature cycle.

In the case of the embodiments shown in Figure 6, it corresponds to a color photovoltaic module having the structure shown in Figure 1, and all examples are common as follows, except for the content of the pigment in the coating composition of the color coating layer. has a composition ratio.

weight ratio Solvent-dibutyl ether 90% polysilazane 6% TiO2 2% Inorganic pigment (inorganic pigment of C-imitation) 1.6 to 3% Others (surfactants, etc.) One%

On the other hand, the table below shows the experimental results for the power generation efficiency compared to the bare (colorless solar module).

division Bare 2 4 5 6 7 14 18 23 Isc(A) 9.107 8.451 8.492 8.498 8.702 8.501 8.920 8.282 8.470 Bare contrast ratio 100% 93% 93% 93% 96% 93% 98% 91% 93% Pmax(W) 4.51 4.20 4.18 4.17 4.27 4.16 4.36 4.10 4.18 Bare contrast ratio 100% 93% 93% 92% 95% 92% 97% 91% 93%

7 shows an assembly of a color photovoltaic module according to an embodiment of the present invention.

8 shows a blue color photovoltaic module according to an embodiment of the present invention.

As shown in Figures 7 and 8, the color photovoltaic module according to embodiments of the present invention can exhibit the effect of maintaining a uniform color as a whole while implementing various colors.

According to an embodiment of the present invention, the color photovoltaic module can exhibit the effect of promoting external aesthetics when applied to BIPV by realizing color while maintaining high power generation efficiency.

According to an embodiment of the present invention, by implementing the color coating layer through a spray method instead of a vacuum deposition method, the manufacturing process of the color solar module can be made efficiently.

According to an embodiment of the present invention, an element for implementing a color is simpler than that of a conventional color photovoltaic module, thereby exhibiting the effect of reducing the manufacturing cost.

According to an embodiment of the present invention, the color sense of the color solar module is not discolored over time by stably maintaining the inorganic pigment that realizes the color feeling by polysilazane and protecting it from foreign substances penetrating from the outside. may have no effect.

According to one embodiment of the present invention, through the selection of inorganic pigments, it is possible to exhibit the effect of realizing the color sense of various colors as desired.

The description of the presented embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the scope of the invention. Thus, the present invention is not to be limited to the embodiments presented herein, but is to be construed in the widest scope consistent with the principles and novel features presented herein.

Claims (5)

As a color solar module applicable to buildings,
windshield;
a color coating layer disposed on a lower surface of the windshield and coupled to the windshield;
a filler layer disposed under the color coating layer;
one or more photovoltaic cells fixedly disposed inside the filler layer; and
Including; a back sheet or tempered glass disposed under the filler layer;
The color coating layer is _{formed by a coating composition comprising TiO 2} and polysilazane having an average molecular weight of 25000 or less, an inorganic pigment, and a solvent,
The inorganic pigment includes a ceramic pigment containing _{Al 2} O ₃ and SiO ₂ having plate-shaped particles,
In the color coating layer, the lower and upper surfaces of the plate-shaped particles of _{Al 2} O ₃ and SiO ₂ are surrounded by _{TiO 2 in the binder composed of the polysilazane.} through, Al ₂ O _3, and going on the diffraction when passing through the plate-shaped particles of SiO _2, Al ₂ O ₃ and plate-shaped particles of SiO ₂ is and transmitting a part of light, Al ₂ O ₃ and plate-shaped particles and TiO of SiO _{2 By reflecting some of the light at the interface of 2} , to implement the color of the color solar module,
The color coating layer,
applying the coating composition to the windshield by a spray method;
performing primary drying by applying hot air at a temperature of 140° to 160° in a state in which the coating composition is applied to the windshield;
In a state in which the coating composition is applied to the windshield, heating is performed to a temperature of 180° to 250° by an oven in direct contact with the windshield. Applicable color photovoltaic module.
The method according to claim 1,
The inorganic pigment has a diameter of 0.02 micrometer to 20 micrometers having plate-shaped particles Al ₂ O ₃ and SiO _{2 A} color solar module applicable to a building comprising a ceramic pigment comprising.
3. The method according to claim 2,
The coating composition,
Solvent; and TiO ₂ , polysilazane having an average molecular weight of 25000 or less, and an inorganic pigment; A color solar module applicable to a building, wherein the ratio is 20:1 to 6:1.
4. The method according to claim 3,
The coating composition,
60 parts by weight of polysilazane;
10 to 30 parts by weight of TiO2; and
10 to 30 parts by weight of an inorganic pigment; Containing, a color photovoltaic module applicable to buildings.
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