KR101220169B1 - Metal flexible dye-sensitized solar cell with coating metal substrate for processing polishing and manufacturing method thereof - Google Patents

Abstract

PURPOSE: A metal flexible dye-sensitized solar cell with a coating metal substrate for processing polishing and a manufacturing method thereof are provided to improve the absorption rate of sunlight by increasing the adsorption quantity of dyes for a thin film. CONSTITUTION: A protective film(303) faces a dye layer(314). Electrolyte(320) is formed between the protective film and the dye layer. A first sealing wall(330) is made of a sealing material as a second barrier layer(312) and an upper electrode substrate(300). A second sealing wall(340) is made of a sealing material as the upper electrode substrate and a lower electrode substrate(310). A first barrier layer(304) and a metallic board(311) are coated with EVA(Ethylene Vinyl Acetate).

Description

Metallic flexible dye-sensitized solar cell with a polished coated metal substrate and its manufacturing method {METAL FLEXIBLE DYE-SENSITIZED SOLAR CELL WITH COATING METAL SUBSTRATE FOR PROCESSING POLISHING AND MANUFACTURING METHOD THEREOF}

The present invention relates to a dye-sensitized solar cell (DYE-SENSITIZED SOLAR CELL) and a method for manufacturing the same, and more particularly, coating or depositing silver (Argentum, hereinafter referred to as "Ag") on the front surface of a polymer plastic substrate. After patterning by laser or hot stamping and depositing or coating a protective film thereon, the transparent carbon-based thin film or Al ₂ O ₃ on the back of the polymer plastic substrate Coating the coated barrier layer to manufacture an upper electrode substrate; Polishing the entire surface of the metal substrate coated with any one of Ti, Zn, tungsten, molybdenum and stainless steel on the iron plate by using a mechanical polishing method, to generate a step on the surface of the metal substrate, Coating a metal layer on the stepped metal substrate, the upper portion of the front and rear of the metal layer is ITO, titanium dioxide (hereinafter, "TiO ₂ " Collectively), silicon dioxide (hereinafter referred to as "SiO ₂ " Referred to generically hereinafter), or a transparent carbon-based thin film is coated with the ITO, TiO _2, SiO _2, or a transparent carbon-based thin film TiO ₂ on the front surface of the metal layer with the coated After coating the nanoparticle layer, various color organic dyes and various color inorganic dyes are applied to manufacture a lower electrode substrate; After the electrolyte is injected between the upper electrode substrate and the lower electrode substrate, the double-sealed with a sealing material and a three-sealing polished coated metal with ethylene acetate vinyl (hereinafter referred to as "EVA"). The present invention relates to a metal flexible dye-sensitized solar cell having a substrate and a method of manufacturing the same.

Environmental problems such as global warming caused by continuous use of fossil fuels are emerging. The use of uranium is also causing problems such as radioactive contamination and nuclear waste disposal facilities. As a result, demand for and research on alternative energy is underway, and a representative example of the alternative energy is solar cells using solar energy.

A solar cell is a device that produces electricity directly using light-absorbing materials that generate electrons and holes when light is irradiated. In 1839, French physicist Becquerel discovered the first photovoltaic that caused a light-induced chemical reaction to generate an electric current, after which a similar phenomenon was found in solids such as selenium. Later, in 1954, after the first development of silicon-based solar cells with an efficiency of about 6% at Bell Labs, research on solar cells continued with inorganic silicon.

Such an inorganic solar cell device is composed of a p-n junction of an inorganic semiconductor such as silicon. The silicon used as the material of the solar cell can be roughly classified into a crystalline silicon type such as a single crystal or a polycrystalline silicon and an amorphous silicon type. Among them, the crystalline silicon series is superior to the amorphous silicon series in energy conversion efficiency of converting solar energy into electric energy, but productivity is lowered due to time and energy consumed to grow crystals.

As a result, studies have been made on photovoltaic devices using photoconductive phenomena of organic materials instead of silicon. The organic photovoltaic phenomenon is that when light is irradiated on organic materials, photons are absorbed to generate electron-hole pairs, which are separated and transferred to the cathode and the anode, respectively. It is a phenomenon that occurs. That is, in the organic solar cell, when light is irradiated to an organic material composed of a junction structure of an electron donor and an acceptor material, electron-hole pairs are formed in the donor and electrons move to the acceptor. Electron-hole separation is achieved. This process is commonly referred to as "charge carrier excitation" or "photoinduced charge transfer" (PICT), in which carriers produced by light are separated into electron-holes and Electricity is produced through the ashes.

However, in the case of solar cells using conventional organic materials, the energy conversion efficiency and the durability were inferior. However, in 1991, Gratzel, a Swiss research team, used dyes as a photoresist to dye photoresist, a photoelectrochemical type solar cell. Solar cells have been developed. The photoelectrochemical solar cell proposed by Gratzel et al. Is a photoelectrochemical solar cell using an oxide semiconductor composed of photosensitive dye molecules and titanium dioxide of nanoparticles. In other words, a dye-sensitized solar cell is a solar cell manufactured using a photoelectrochemical reaction by inserting an electrolyte into an inorganic oxide layer such as titanium oxide in which dye is adsorbed between a transparent electrode and a metal electrode. In general, dye-sensitized solar cells are composed of two electrodes (photoelectrode and counter electrode), inorganic oxides, dyes and electrolytes. Dye-sensitized solar cells are environmentally friendly because they use environmentally harmless materials / materials, Among the inorganic solar cells, it has a high energy conversion efficiency of about 10%, which is comparable to that of amorphous silicon-based solar cells, and the manufacturing cost is only about 20% of silicon solar cells. have.

In general, the structure of a dye-sensitized solar cell includes a glass substrate, a first transparent electrode, an inorganic oxide layer on which dye is adsorbed, an electrolyte layer, a second transparent electrode, and an upper substrate from a lower layer. The inorganic oxide layer is composed of an n-type oxide semiconductor having a wide bandgap such as TiO ₂ , ZnO, and SnO ₂ existing in the form of a nano porous film, and a dye of a single molecule layer is adsorbed on this surface.

The principle of the dye-sensitized solar cell is as follows. When sunlight is incident on a solar cell, the dye's Highest Occupied Molecular Orbital (HOMO) electrons absorb light energy and are excited to the Low Unoccupied Molecular Orbital (LUMO) level, which is an inorganic oxide layer (Conduction Band, CB). Is rapidly injected to form conductive electrons. At this time, the HOMO level vacancy of the dye from which the electrons have escaped is refilled by ions (I-) in the electrolyte layer providing electrons.

That is, as solar light enters, conduction electrons accumulate toward the inorganic oxide layer and electrons gradually accumulate in the electrolyte layer, that is, holes accumulate, and accumulate when the external load is applied. Due to the formation of electromotive force can be seen.

Looking at the conventional manufacturing method of the dye-sensitized solar cell, as shown in Figure 1, the lower electrode substrate 10 is a first transparent transparent of the first substrate of Fluorine-doped Tin Oxide (FTO) or ITO on the glass substrate 11 After depositing the electrode 12, the TiO ₂ colloidal solution was applied thereon, and then sintered at a temperature of approximately 450 ° C. or more to form TiO _2. The thin film 13 is coated. This process is performed repeatedly to control the thickness or state of the desired inorganic oxide layer. Subsequently, the dye is immersed in a dye solution for about 2 to 3 days to dye the dye on the surface of the TiO ₂ particles to form the dye layer 14. Meanwhile, the upper electrode substrate 20 is coated with platinum (Pt) on the glass substrate 21 by a general sputtering method to deposit the second transparent electrode 22, and then injected with electrolyte 30. Form a dragon hole. Thereafter, the lower electrode substrate 10 and the upper electrode substrate 20 are bonded by using the polymer packaging material 40, and then the electrolyte 30 is injected into the anode material through a pre-made hole and completed.

These dye-sensitized solar cells can be manufactured at a quarter of the cost of conventional silicon solar cells due to the low cost of raw materials and easy fabrication methods, and various applications due to light weight, thin film, transparency, and the possibility of implementing various colors. Applicable to In addition, the dye-sensitized solar cell has its own flexibility, it is possible to implement a flexible solar cell if an appropriate flexible transparent electrode is implemented.

In particular, dye-sensitized solar cells for portable devices can be regarded as the necessary characteristics of light weight and flexibility as a moving power source, and dye-sensitized solar cells have their own flexibility, so when flexible flexible electrodes are implemented, flexible solar cells It is possible to implement.

However, it is difficult to use a flexible substrate such as plastic and a transparent electrode such as a conductive polymer because a high temperature sintering process is required in the dye-sensitized solar cell manufacturing technology.

Recently, an inorganic oxide layer capable of low temperature sintering (less than about 150 ° C.) has been developed to enable the use of commercially available conductive plastic substrates, but in this case, the conversion efficiency must be reduced.

In addition, the conversion efficiency of the conventional dye-sensitized solar cell which does not perform any surface structuring process on the lower electrode substrate which is a metal substrate is low as shown in FIG.

Therefore, there is a significant difficulty in implementing a flexible dye-sensitized solar cell with high conversion efficiency. In addition, the conventional flexible dye-sensitized solar cell has been injected with a liquid electrolyte, etc., but over time, due to the electrolyte leakage phenomenon that the injected liquid electrolyte leaks, the durability is unstable.

Accordingly, an object of the present invention is to solve the above problems, the surface of the metal substrate coated with a thin film of any one of Ti, Zn, tungsten, molybdenum, stainless steel on the iron plate surface (Texturing) As part of the process by polishing using a mechanical polishing method, to generate a step on the surface of the metal substrate, and to coat a metal layer on the metal substrate on which the step is formed, the top of the front and rear of the metal layer ITO, TiO ₂ , SiO _2, carbon, or transparent and coated with a thin line, the ITO, TiO _2, SiO _2, or a transparent carbon-based thin film TiO ₂ on the front surface of the metal layer with the coated After coating the nanoparticle layer, various color organic dyes and various color inorganic dyes are applied to manufacture a lower electrode substrate; After injecting an electrolyte between the upper electrode substrate and the lower electrode substrate, double sealing with a sealing material and triple sealing with EVA to form a plurality of metal flexible dye-sensitized solar cells, the metal flexible dye-sensitized solar cell thus formed By double-sealing metal flexible dye-sensitized solar cells manufactured by connecting cells in series or in parallel with a sealing material and triple sealing with EVA, the conversion efficiency of the solar cells is improved, electrolyte leakage is prevented, fine dust, etc. It is to provide a metal flexible dye-sensitized solar cell and a method of manufacturing the same having a polished coated metal substrate that can be protected from impurities.

Metal-flexible dye-sensitized solar cell with a polished coated metal substrate according to the present invention is coated or deposited Ag on the top of the front surface of the polymer plastic substrate, patterned by laser or hot stamping, the top of the patterned Ag After depositing or coating a protective film on the upper surface of the polymer plastic substrate, a transparent carbon-based thin film or Al ₂ O ₃ An upper electrode substrate manufactured by coating a first barrier layer formed of any one of the above; Polishing the front surface of the metal substrate coated with any one of the thin films of Ti, Zn, tungsten, molybdenum and stainless steel on the iron plate to generate a step on the surface of the metal substrate, Coating a second barrier layer formed of any one of ITO, TiO ₂ , SiO ₂ , or a transparent carbon-based thin film on top, and TiO ₂ on the top of the entire surface of the second barrier layer. Coating the nanoparticle layer, the TiO ₂ A lower electrode substrate manufactured by forming a dye layer to which a color organic dye and a color inorganic dye are applied on the nanoparticle layer; A protective layer of the upper electrode substrate and a dye layer of the lower electrode substrate are disposed to face each other, and include an electrolyte injected between the protective layer and the dye layer; Forming a first sealing wall using a second barrier layer and the upper electrode substrate in contact with the electrolyte as a sealing material; Forming a second sealing wall using the upper electrode substrate and the lower electrode substrate as a sealing material; The first barrier layer and the metal substrate are coated with EVA.

In addition, the metal flexible dye-sensitized solar cell manufacturing method having a coated metal substrate polished according to the present invention comprises the steps of preparing a polymer plastic substrate; Coating an upper portion of the front surface of the polymer plastic substrate with Ag; Patterning the Ag-coated polymer plasma substrate with a laser or a thermal engraving; Coating a protective film on top of the patterned Ag; A transparent carbon based thin film or Al ₂ O ₃ on top of the back of the polymer plastic substrate Manufacturing an upper electrode substrate by coating the first barrier layer formed of any one of the following; Preparing a metal substrate coated with a thin film of any one of Ti, Zn, tungsten, molybdenum, and stainless steel on an iron plate; Polishing a front surface of the metal substrate; Coating a second barrier layer formed of any one of ITO, TiO ₂ , SiO ₂ , or a transparent carbon-based thin film on an upper portion of the front surface of the polished metal substrate; TiO ₂ on top of the front side of the second barrier layer Coating the nanoparticle layer; The TiO ₂ Manufacturing a lower electrode substrate by forming a dye layer on the top of the nanoparticle layer; Arranging the protective layer of the upper electrode substrate and the dye layer of the lower electrode substrate so as to face each other, and first sealing the second barrier layer and the upper electrode substrate with a sealing material to form a primary sealing wall; Secondary sealing the upper electrode substrate and the lower electrode substrate with a sealing material to form a secondary sealing wall; Injecting an electrolyte between the protective film and the dye layer; And coating the upper electrode substrate and the lower electrode substrate with EVA.

As described above, the metal flexible dye-sensitized solar cell provided with the coated metal substrate polished according to the present invention polishes the surface of the metal substrate using a mechanical polishing method to generate a step on the surface of the metal substrate, The step increases the adhesion of the ITO, TiO ₂ , SiO ₂ , or transparent carbon-based thin film coated on the metal substrate and increases the specific surface area, thereby adsorbing the dye and the electrolyte. By increasing the absorption rate of the solar light is increased there is an advantage that can increase the conversion efficiency of the solar cell.

In addition, by injecting an electrolyte between the protective film and the dye layer, double sealing with a sealing material and triple-sealing with EVA, which prevents electrolyte leakage and improves the reliability of the dye-sensitized solar cell that may deteriorate the electrode. There is an advantage that can be protected from impurities such as fine dust or moisture.

In addition, there is an advantage that the Ag coated on the upper electrode substrate by the protective film can be protected from the electrolyte.

1 is a cross-sectional view of a conventional dye-sensitized solar cell.
Figure 2 is a graph showing the conversion efficiency of the conventional dye-sensitized solar cell.
3 is a cross-sectional view of a metal flexible dye-sensitized solar cell with a polished coated metal substrate according to the present invention.
4 is an AFM photograph of the coated metal substrate of FIG. 3.
FIG. 5 is an SEM photograph of the coated metal substrate of FIG. 3.
Figure 6 is a graph showing the conversion efficiency of the metal flexible dye-sensitized solar cell with a coated metal substrate polished according to the present invention.
Figure 7 is a flow chart of a metal flexible dye-sensitized solar cell manufacturing method having a coated metal substrate polished according to the present invention.
8 is a schematic enlarged cross-sectional view of a metal flexible dye-sensitized solar cell module with a polished coated metal substrate according to the present invention.
9 is a product photographic view of a metal flexible dye-sensitized solar cell with a polished coated metal substrate according to the present invention.

Hereinafter, a metal flexible dye-sensitized solar cell having a polished coated metal substrate according to the present invention and a manufacturing method thereof will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to a client's or operator's intention or custom. Therefore, the definition should be based on the contents throughout this specification.

Like numbers refer to like elements throughout the drawings.

3 is a cross-sectional view of a metal flexible dye-sensitized solar cell having a polished coated metal substrate according to the present invention, FIG. 4 is an AFM photograph of the polished coated metal substrate of FIG. 3, and FIG. 5 is a polishing of FIG. 3. SEM image of the coated metal substrate, Figure 6 is a graph showing the conversion efficiency of the metal flexible dye-sensitized solar cell with a coated metal substrate polished according to the present invention, Figure 7 is a polishing treatment according to the present invention 9 is a flow chart of a method of manufacturing a metal flexible dye-sensitized solar cell with a coated metal substrate, and FIG. 8 is a schematic enlarged cross-sectional view of a metal flexible dye-sensitized solar cell module having a polished coated metal substrate according to the present invention. Is a product photograph of a metal flexible dye-sensitized solar cell with a polished coated metal substrate according to the present invention.

As shown in Figs. 3, 8 and 9, the metal flexible dye-sensitized solar cell with a polished coated metal substrate according to the present invention has a Ag 302 on top of the front surface of the polymer plastic substrate 301. After coating or depositing a patterned by laser or hot stamping, and by depositing or coating a protective film 303 on top of the patterned Ag, on the top of the back of the polymer plastic substrate 301, a transparent carbon series Thin film or Al ₂ O ₃ An upper electrode substrate 300 manufactured by coating the first barrier layer 304 formed of any one of the above; Polishing the entire surface of the metal substrate 311 coated with any one of thin films of Ti, Zn, tungsten, molybdenum and stainless steel on the iron plate to generate a step on the surface of the metal substrate 311, and the step A second barrier layer 312 formed of any one of ITO, TiO ₂ , SiO ₂ , or a transparent carbon-based thin film is coated on the upper surface of the front surface of the formed metal substrate 311, and the front surface of the second barrier layer 312 is coated. TiO ₂ on top of Coating the nanoparticle layer 313, the TiO ₂ A lower electrode substrate 310 formed by forming a dye layer 314 to which a color organic dye and a color inorganic dye are applied on the nanoparticle layer 313; The protective layer 303 of the upper electrode substrate 300 and the dye layer 314 of the lower electrode substrate 310 are disposed to face each other, and the electrolyte 320 injected between the protective layer 303 and the dye layer 314. It includes.

Here, the second barrier layer 312 and the upper electrode substrate 300 in contact with the electrolyte 320 is formed with a sealing material as a primary sealing wall 330, the upper electrode substrate 300 and the lower electrode substrate. After forming the secondary sealing wall 340 using the sealing material 310 as the sealing material, the first barrier layer 304 and the metal substrate 311 are subjected to the third sealing using the EVA 350.

In addition, the polymer plastic substrate 301 is made of any one of polyethylene terephthalate (PET), polyethylene naphthalate (PEN), and polyethersulfone (PES).

Further, the sealing material is made of PET or PEN.

In addition, the protective layer 303 and the transparent carbon-based thin film is a transparent carbon nanotube (hereinafter referred to as "CNT") thin film or a transparent graphene (Graphen) thin film.

In addition, the electrolyte 320 is a liquid electrolyte or a semisolid electrolyte.

Accordingly, the metal flexible dye-sensitized solar cell having the polished coated metal substrate thus formed may be formed of an ITO, TiO ₂ , SiO ₂ , or transparent carbon based thin film in which a step formed on the surface of the metal substrate is coated on the metal substrate. By increasing the adhesion and at the same time the specific surface area, the adsorption amount of the dye applied to the thin film and the adsorption amount of the electrolyte is increased to increase the absorption rate of the solar light can increase the conversion efficiency of the solar cell. In addition, by injecting an electrolyte between the protective film and the dye layer, double sealing with a sealing material and triple-sealing with EVA, which prevents electrolyte leakage and improves the reliability of the dye-sensitized solar cell that may deteriorate the electrode. It can be protected from impurities such as fine dust or moisture. In addition, Ag coated on the upper electrode substrate by the protective film can be protected from the electrolyte.

Hereinafter, a preferred embodiment of manufacturing a metal flexible dye-sensitized solar cell having a coated metal substrate polished according to the present invention will be described in detail with reference to FIGS. 4 to 6.

[Example]

polishing  process

Implementation of high efficiency solar cells begins with the surface structuring process of the substrate. Hereinafter, in order to examine the effect on the surface structuring process of the metal substrate of the dye-sensitized solar cell, the metal substrate was polished by mechanical polishing as part of the surface structuring process.

First, in order to examine the influence of the surface roughness of the metal substrate, the metal substrate having a thickness of 0.1T is cut to a size of 2 cm, and then the metal substrate is cleaned in an organic cleaning order.

Thereafter, the surface was washed with a nitrogen gun, treated with hydrofluoric acid for 30 seconds, washed with distilled water and dried for 10 minutes with a nitrogen gun and a hot air dryer.

Then, using mounting, polishing and polishing by mechanical polishing are performed for 5 minutes using grinding and sandpaper # 600 to control surface roughness.

TiO ₂ Processing and Module Making

After coating TiO ₂ with 4-8㎛ on the polished metal surface and adsorbing the dye, platinum is coated on the counter electrode to enable the catalytic function. Thereafter, a semi-solid electrolyte to which clay particles as nanoparticles are applied is applied, coated, and then sealed using a 60 μm sealing material to prepare a module (see FIG. 8).

As described above, the AFM (Atomic Force Microscope) of the specimen polished for 5 minutes with sandpaper # 600 is shown in FIG. 4, and the SEM (Scanning Electron Microscope) of the specimen polished with sandpaper # 600 for 5 minutes. , Scanning electron microscope) is shown in FIG. 5.

As can be seen in Figures 4 to 5, the specimen polished for 5 minutes with sandpaper # 600 showed a deep and wide surface roughness as a whole. This polishing process is a process of etching the surface by a combination of the force applied to the abrasive particles and the mechanical and chemical behavior of the metal surface.

In addition, depending on the polishing rate of the metal surface due to the roughness of the sandpaper, a step may occur on the metal surface. This step of the metal surface increases the adhesion of TiO ₂ , which is an oxide, and at the same time increases the specific surface area, thereby increasing the adsorption amount of the dye and the adsorption amount of the electrolyte.

When the structure of the metal becomes good, absorption of solar light is increased, the density of current and the amount of current are increased, and as shown in FIG. 6, the conversion efficiency of the solar cell can be increased.

Now, a method of manufacturing a metal flexible dye-sensitized solar cell with a coated metal substrate subjected to polishing according to the present invention will be described in detail with reference to FIG. 7. The solar cell is a step of preparing a polymer plastic substrate 301 (S701); Coating an upper portion of the front surface of the polymer plastic substrate (301) with Ag (302) (S702); Patterning the Ag (302) -coated polymer flask substrate (301) with a laser or a thermal engraving (S703); Coating a protective film 303 on top of the patterned Ag (S704); A transparent carbon based thin film or Al ₂ O ₃ on the upper part of the back of the polymer plastic substrate 301 Manufacturing an upper electrode substrate 300 by coating the first barrier layer 304 formed of any one of the above (S705); Preparing a metal substrate 311 coated with a thin film of any one of Ti, Zn, tungsten, molybdenum, and stainless steel on the iron plate (S706); Polishing a front surface of the metal substrate (311) (S707); Coating (S708) a second barrier layer (312) formed of any one of ITO, TiO ₂ , SiO ₂ , or a transparent carbon-based thin film on an upper portion of the polished metal substrate 311; TiO ₂ on the top of the front of the second barrier layer 312 Coating the nanoparticle layer 313 (S709); The TiO ₂ Forming a dye layer 314 on top of the nanoparticle layer 313 to manufacture a lower electrode substrate (S710); The protective layer 303 of the upper electrode substrate 300 and the dye layer 314 of the lower electrode substrate 310 are disposed to face each other, and the second barrier layer 312 and the upper electrode substrate 300 are formed of a sealing material. Primary sealing to form a primary sealing wall 330 (S711); Forming a secondary sealing wall 340 by secondary sealing the upper electrode substrate 300 and the lower electrode substrate 310 with a sealing material (S712); Injecting an electrolyte between the passivation layer 303 and the dye layer 314 (S713); The upper electrode substrate 300 and the lower electrode substrate 310 is coated with an EVA 350 (S714).

Hereinafter, a module of a metal flexible dye-sensitized solar cell having a polished coated metal substrate according to the present invention will be described.

Referring to FIG. 8, which shows a schematic enlarged cross-section of a metal flexible dye-sensitized solar cell module having a polished coated metal substrate according to the present invention, Ag 302 is coated on an upper electrode substrate (not shown). After patterning is formed by laser or thermal engraving, and then coated with a protective film 303, the organic and inorganic dyes deposited on the lower electrode substrate (not shown) are adsorbed on TiO _2. Nanoparticle layer 313 is located. The portion thus formed, denoted by A, is a metal flexible dye-sensitized solar cell module with a polished coated metal substrate according to the present invention.

 The product of the metal-flexible dye-sensitized solar cell having a polished coated metal substrate according to the present invention manufactured as described above may be bent in a flexible form, as shown in FIG. 9, in a next-generation PC industry such as a mobile phone and a wearable PC. It can be used for self-charging of power supply, clothes, hat, car glass, building, etc.

The metal-flexible dye-sensitized solar cell having a polished coated metal substrate according to the present invention as described above polishes the surface of the metal substrate by a mechanical polishing method to generate a step on the surface of the metal substrate. By increasing the adhesion of the ITO, TiO ₂ , SiO ₂ , or transparent carbon-based thin film coated on the metal substrate and increasing the specific surface area, the adsorption amount of the dye applied on the thin film and the adsorption amount of the electrolyte are increased. Increasing the absorption of solar light can increase the efficiency of the solar cell. In addition, by injecting an electrolyte between the protective film and the dye layer, double sealing with a sealing material and triple-sealing with EVA, which prevents electrolyte leakage and improves the reliability of the dye-sensitized solar cell that may deteriorate the electrode. It can be protected from impurities such as fine dust or moisture. In addition, Ag coated on the upper electrode substrate by the protective film can be protected from the electrolyte.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Various changes, modifications or adjustments to the example will be possible. Therefore, the scope of protection of the present invention should be construed as including all changes, modifications, and adjustments that fall within the spirit of the technical idea of the present invention.

300: upper electrode substrate 301: polymer plastic substrate
302: Ag 303: protective film
304: first barrier layer 310: lower electrode substrate
311: metal substrate 312: second barrier layer
313: TiO ₂ Nanoparticle Layer 314: Dye Layer
320: electrolyte 330: primary sealing wall
340: secondary sealing wall 350: EVA

Claims (7)

After coating or depositing Ag 302 on the top of the front surface of the polymer plastic substrate 301, patterned by laser or hot stamping, and after depositing or coating the protective film 303 on the top of the patterned Ag, On top of the back of the polymer plastic substrate 301, a transparent carbon-based thin film or Al ₂ O ₃ An upper electrode substrate 300 manufactured by coating the first barrier layer 304 formed of any one of the above;
Polishing the entire surface of the metal substrate 311 coated with any one of thin films of Ti, Zn, tungsten, molybdenum and stainless steel on the iron plate to generate a step on the surface of the metal substrate 311, and the step A second barrier layer 312 formed of any one of ITO, TiO ₂ , SiO ₂ , or a transparent carbon-based thin film is coated on the upper surface of the front surface of the formed metal substrate 311, and the front surface of the second barrier layer 312 is coated. TiO ₂ on top of Coating the nanoparticle layer 313, the TiO ₂ A lower electrode substrate 310 formed by forming a dye layer 314 to which a color organic dye and a color inorganic dye are applied on the nanoparticle layer 313;
The protective layer 303 of the upper electrode substrate 300 and the dye layer 314 of the lower electrode substrate 310 are disposed to face each other, and the electrolyte 320 injected between the protective layer 303 and the dye layer 314. It includes;
Forming a second barrier layer (312) in contact with the electrolyte (320) and the upper electrode substrate (300) with a sealing material (330) as a sealing material;
Forming a second sealing wall (340) using the upper electrode substrate (300) and the lower electrode substrate (310) as a sealing material;
Metal flexible dye-sensitized solar cell with a polished coated metal substrate, characterized in that the first barrier layer 304 and the metal substrate 311 is coated with ethylene acetate vinyl (EVA, 350). .
The method of claim 1,
And the polishing is performed by mechanical polishing. A metal flexible dye-sensitized solar cell with a coated metal substrate, which is polished.
The method of claim 1,
The polymer plastic substrate (301) is a metal flexible dye-sensitized solar cell having a polished coated metal substrate, characterized in that made of any one of polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyethersulfone (PES).
The method of claim 1,
The protective film 303 and the transparent carbon-based thin film is a flexible carbon nanotube thin film or a transparent graphene (graphene) thin metal flexible dye-sensitized solar cell with a coated metal substrate, characterized in that the thin film.
The method of claim 1,
The electrolyte 320 is a metal flexible dye-sensitized solar cell provided with a coated metal substrate, characterized in that the liquid electrolyte or semi-solid electrolyte.
The method of claim 1,
The sealing material is a metal flexible dye-sensitized solar cell provided with a coated metal substrate, characterized in that consisting of PET or PEN.
Preparing a polymer plastic substrate 301 (S701);
Coating an upper portion of the front surface of the polymer plastic substrate (301) with Ag (302) (S702);
Patterning the Ag (302) -coated polymer flask substrate (301) with a laser or a thermal engraving (S703);
Coating a protective film 303 on top of the patterned Ag (S704);
A transparent carbon based thin film or Al ₂ O ₃ on the upper part of the back of the polymer plastic substrate 301 Manufacturing an upper electrode substrate 300 by coating the first barrier layer 304 formed of any one of the above (S705);
Preparing a metal substrate 311 coated with a thin film of any one of Ti, Zn, tungsten, molybdenum, and stainless steel on the iron plate (S706);
Polishing a front surface of the metal substrate (311) (S707);
Coating (S708) a second barrier layer (312) formed of any one of ITO, TiO ₂ , SiO ₂ , or a transparent carbon-based thin film on an upper portion of the polished metal substrate 311;
TiO ₂ on the top of the front of the second barrier layer 312 Coating the nanoparticle layer 313 (S709);
The TiO ₂ Forming a dye layer 314 on top of the nanoparticle layer 313 to manufacture a lower electrode substrate (S710);
The protective layer 303 of the upper electrode substrate 300 and the dye layer 314 of the lower electrode substrate 310 are disposed to face each other, and the second barrier layer 312 and the upper electrode substrate 300 are formed of a sealing material. Primary sealing to form a primary sealing wall 330 (S711);
Forming a secondary sealing wall 340 by secondary sealing the upper electrode substrate 300 and the lower electrode substrate 310 with a sealing material (S712);
Injecting an electrolyte between the passivation layer 303 and the dye layer 314 (S713);
Manufacturing the metal flexible dye-sensitized solar cell with a coated metal substrate, characterized in that it comprises the step (S714) of coating the upper electrode substrate 300 and the lower electrode substrate 310 with an EVA (350). Way.

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