KR101092922B1 - Solar cell including color layer - Google Patents
Solar cell including color layer Download PDFInfo
- Publication number
- KR101092922B1 KR101092922B1 KR1020090080211A KR20090080211A KR101092922B1 KR 101092922 B1 KR101092922 B1 KR 101092922B1 KR 1020090080211 A KR1020090080211 A KR 1020090080211A KR 20090080211 A KR20090080211 A KR 20090080211A KR 101092922 B1 KR101092922 B1 KR 101092922B1
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- Prior art keywords
- solar cell
- color layer
- substrate
- color
- present
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
A solar cell having a color layer is disclosed. A solar cell having a color layer according to the present invention includes a substrate 100; A color layer 200 formed on the substrate 100 and reflecting light having a different wavelength band according to the thickness; A lower electrode 300 formed on the color layer 200; An optoelectronic device 400 having a plurality of semiconductor layers 410, 420, and 430 formed on the lower electrode 300 stacked thereon; And an upper electrode 600 formed on the optoelectronic device 400.
Color layer, thickness, wavelength, solar cell
Description
The present invention relates to a solar cell having a color layer. More specifically, the present invention relates to a solar cell having a color layer representing various colors by reflecting light of a predetermined wavelength band according to thickness.
The energy generally used today is limited to fossil energy such as petroleum, coal and natural gas, and has a problem of emitting pollutants. Therefore, the development of alternative energy that can replace this has been important, the most attention among them is the solar cell using the solar light. Solar power generation technology is a principle that can easily obtain power by receiving light and converting it into electrical energy. Therefore, it is a clean power generation technology that can change the pollution-free sunlight into electric energy indefinitely, and there is no pollution such as air pollution, noise, heat generation, vibration, etc. In addition, it can have a semi-permanent life almost no need for transportation of fuel and maintenance of the power generation equipment.
On the other hand, general solar cells have a blue-black or red-brown color. Therefore, when the solar cell is installed to be exposed to the outside of a building or a vehicle, and particularly when used as a power source for a portable home appliance, solar cells of various colors are required in terms of aesthetics to suit consumer's taste.
In order to solve this problem, a predetermined color may be implemented by providing a thin film layer in which a separate coloring material is colored in the solar cell. However, when using a coloring material, there is a problem that the transparency decreases according to the characteristics of the coloring material itself, thereby reducing the amount of incident light of the solar cell, thereby lowering the photoelectric conversion efficiency. Therefore, the choice of color is inevitably limited.
As another solution, a color may be coated on the surface of the film (lamination film) by laminating the front surface of the solar cell to realize a predetermined color. However, when using the lamination method, a coating process for imparting color to the lamination film and a lamination process for attaching to the solar cell may be required, which may increase time and cost. In particular, when the coated film is laminated to the solar cell, it may be discolored by external scratches or sunlight, and may cause a problem that the film is peeled from the solar cell due to the decrease in adhesiveness of the adhesive.
In addition, such a lamination method can also reduce the amount of incident light of the solar cell, it is difficult to solve the problem that the photoelectric conversion efficiency is lowered.
Accordingly, an object of the present invention is to provide a solar cell having a color layer capable of preventing the above problems of the prior art, which can prevent external interference and a decrease in photoelectric conversion efficiency.
In addition, the present invention has another object to provide a solar cell that can exhibit a variety of colors.
The object of the present invention is a substrate; A color layer formed on the substrate and reflecting light having a different wavelength band according to the thickness; A lower electrode formed on the color layer; An optoelectronic device in which a plurality of semiconductor layers are formed on the lower electrode; And it is achieved by a solar cell comprising an upper electrode formed on the optoelectronic device.
In this case, the color layer may be a transparent insulating material.
The transparent insulating material may be silicon oxide (SiO x ) or silicon nitride (SiN x ).
At least one of the substrate and the color layer may have an uneven pattern formed on an upper surface thereof.
The uneven pattern for texturing may be formed on the substrate based on uniformity of color coordinates of light reflected from the color layer.
According to the solar cell of the present invention, a transparent material is formed between the substrate and the lower electrode and is provided with a color layer having an antireflection function, thereby preventing external interference and a decrease in photoelectric conversion efficiency.
In addition, according to the solar cell of the present invention, by providing a color layer between the substrate and the lower electrode, it is possible to accurately measure the uniformity of the solar cell (particularly, the substrate).
In addition, according to the solar cell of the present invention, it is possible to implement a variety of colors by having a color layer for reflecting light of various wavelength bands according to the thickness.
DETAILED DESCRIPTION The following detailed description of the invention refers to the accompanying drawings that show, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different but need not be mutually exclusive. For example, certain features, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with an embodiment. It is also to be understood that the position or arrangement of the individual components within each disclosed embodiment may be varied without departing from the spirit and scope of the invention. The following detailed description, therefore, is not to be taken in a limiting sense, and the scope of the present invention, if properly described, is defined only by the appended claims, along with the full range of equivalents to which such claims are entitled. In the drawings, like reference numerals refer to the same or similar functions throughout the several aspects, and length, area, thickness, and the like may be exaggerated for convenience.
DETAILED DESCRIPTION Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention.
[Preferred Embodiments of the Invention]
1 to 3 are diagrams showing a sequential cross section of a solar cell having a
First, referring to FIG. 1, a
Sand blasting can be used as a representative texturing method. Sand blasting in the present invention includes both dry blasting for etching by etching the etching particles with compressed air and wet blasting for etching by spraying the etching particles together with the liquid. On the other hand, the etching particles used in the sand blasting of the present invention can be used without limitation, particles that can form irregularities on the substrate by physical impact, such as sand, small metal.
Subsequently, the
The
In more detail, the
TABLE 1
If Referring to Table 1, there can be seen the various colors appears depending on the thickness (um) of the thin film of silicon oxide (SiO x), for example, the film thickness of the silicon oxide (SiO x), the brown 0.07um You can get the color of Brown. The same principle applies to silicon nitride (SiN x ), and the optical properties according to the thickness of the thin film of the transparent insulating material are already known, and thus detailed descriptions thereof will be omitted.
In addition, the
In an embodiment of the present invention, an uneven pattern may be formed on an upper surface of any one or more of the
In addition, the
Next, referring to FIG. 2, a
Formation methods of the
Next, referring to FIG. 3, p-type and n-type or p-type, i-type, and n-type semiconductor layers may be stacked and formed on the
Subsequently, the
The
As described above, the solar cell of the present invention includes the
Color layer Uniformity of Solar Cell
In the following detailed description, other functions of the
4 is a view for briefly explaining a method of measuring color coordinate uniformity in a solar cell having a
Referring to FIG. 4, color coordinate uniformity may be measured using five points including an edge portion and a center portion in the entire area of the
Therefore, the color coordinate uniformity of the
As such, measuring the color coordinate uniformity using the
Color layer Equipped Polycrystalline Silicon solar cells
5 is a diagram illustrating a configuration of an
Referring to FIG. 5, the
In more detail, the first
Subsequently, a process of crystallizing the first, second, and third amorphous silicon layers 410, 420, and 430 by high temperature treatment may be performed. That is, the first
The
In this case, the crystallization methods of the first, second, and third amorphous silicon layers 410, 420, and 430 may include Solid Phase Crystallization (SPC), Excimer Laser Annealing (ELA), Sequential Lateral Solidification (SLS), and Metal Induced Crystallization (MIC). ) And MILC (Metal Induced Lateral Crystallization) can be used. Since the crystallization method of the amorphous silicon is a known technique, a detailed description thereof will be omitted herein.
In the above description, the first, second, and third amorphous silicon layers 410, 420, and 430 are all formed, but the crystallization is performed simultaneously. However, the present invention is not limited thereto. For example, the crystallization process may be performed separately for each amorphous silicon layer, and the two amorphous silicon layers may be simultaneously crystallized and the other amorphous silicon layer may be separately crystallized.
Although not shown, the first
6 is a view showing the configuration of an optoelectronic device (400, 500) according to another embodiment of the present invention.
Referring to FIG. 6, another
In the foregoing detailed description, the present invention has been described by specific embodiments such as specific components and the like, but the embodiments and drawings are provided only to help a more general understanding of the present invention, and the present invention is limited to the above embodiments. However, one of ordinary skill in the art can make various modifications and variations from this description.
Therefore, the spirit of the present invention should not be construed as being limited to the above-described embodiments, and all of the equivalents or equivalents of the claims, as well as the following claims, I will say.
1 to 3 are diagrams showing a sequential cross section of a solar cell having a
4 is a view for briefly explaining a method of measuring color coordinate uniformity in a solar cell having a
5 is a diagram illustrating a configuration of an
6 is a view showing the configuration of an optoelectronic device (400, 500) according to another embodiment of the present invention.
<Explanation of symbols for the main parts of the drawings>
100: substrate
200: color layer
300: lower electrode
400, 500: photoelectric device
600: upper electrode
Claims (5)
Priority Applications (1)
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KR1020090080211A KR101092922B1 (en) | 2009-08-28 | 2009-08-28 | Solar cell including color layer |
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KR1020090080211A KR101092922B1 (en) | 2009-08-28 | 2009-08-28 | Solar cell including color layer |
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KR20110022785A KR20110022785A (en) | 2011-03-08 |
KR101092922B1 true KR101092922B1 (en) | 2011-12-12 |
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Cited By (1)
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KR20210118641A (en) | 2020-03-23 | 2021-10-01 | 한국과학기술원 | Device for color development of solar cell |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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KR101374713B1 (en) * | 2012-03-29 | 2014-03-18 | 인텔렉추얼디스커버리 주식회사 | Photovoltaic module and manufacturing method of the same |
KR102031722B1 (en) * | 2017-10-31 | 2019-11-27 | 케이알솔라 주식회사 | PV panel for building using lightweight aggregate |
EP3531458B1 (en) * | 2018-02-23 | 2020-09-09 | (CNBM) Bengbu Design & Research Institute for Glass Industry Co., Ltd. | Solar module with homogeneous colour effect |
KR102266122B1 (en) * | 2019-08-30 | 2021-06-16 | 한국남동발전 주식회사 | Photovoltaic Device and method for driving the same |
KR102398146B1 (en) * | 2020-02-14 | 2022-05-13 | 고려대학교 산학협력단 | Color sorar cell module |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10308525A (en) * | 1998-04-30 | 1998-11-17 | Opt Techno:Kk | Solar cell device |
JPH1140825A (en) | 1997-07-16 | 1999-02-12 | Fuji Electric Co Ltd | Amorphous silicon solar cell |
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2009
- 2009-08-28 KR KR1020090080211A patent/KR101092922B1/en not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1140825A (en) | 1997-07-16 | 1999-02-12 | Fuji Electric Co Ltd | Amorphous silicon solar cell |
JPH10308525A (en) * | 1998-04-30 | 1998-11-17 | Opt Techno:Kk | Solar cell device |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20210118641A (en) | 2020-03-23 | 2021-10-01 | 한국과학기술원 | Device for color development of solar cell |
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