KR101256473B1 - Electrode plate and dye-sensitized solar cell having the same, and method for manufacturing the same - Google Patents

Abstract

The present invention relates to one electrode for a dye-sensitized solar cell, a dye-sensitized solar cell including the same, and a method of manufacturing the same. The disclosed one-electrode for dye-sensitized solar cell is formed on a conductive metal film and the conductive metal film. It includes a corrosion prevention film to prevent the corrosion of the film, there is an advantage to improve the long-term stability by preventing the conductive metal film is corroded by the electrolyte.

Description

One electrode for dye-sensitized solar cell, dye-sensitized solar cell comprising same and manufacturing method thereof {ELECTRODE PLATE AND DYE-SENSITIZED SOLAR CELL HAVING THE SAME, AND METHOD FOR MANUFACTURING THE SAME}

The present invention relates to a dye-sensitized solar cell (DSSC, Dye-sensitized solar cell, more specifically, a dye-sensitized solar cell including a corrosion protection film, a dye-sensitized solar cell having such one electrode, And it relates to a method for manufacturing the one electrode and the solar cell.

Solar cells are a key element of solar power generation that converts solar energy directly into electricity. Solar cells are currently being applied to a variety of fields, including electricity, electronics, houses and buildings. The solar cells are classified according to the material of the light absorbing layer.Silicone solar cells using silicon as the light absorbing layer, compound solar cells using CIS (CuInSe2) or cadmium tellurium (CdTe) as the light absorbing layer, and dyes on which the photosensitive dye molecules are adsorbed Sensitized solar cells are classified into stacked solar cells in which a plurality of amorphous silicon is stacked.

Among them, dye-sensitized solar cells, unlike silicon solar cells, consist mainly of photosensitive dye molecules capable of absorbing visible light to produce electron-hole pairs, and transition metal oxides for transferring the generated electrons. It is a solar cell made of a material. Such dye-sensitized solar cells are attracting attention due to their advantages such as low cost, easy fabrication and high solar cell conversion efficiency compared to silicon solar cells.

Since these dye-sensitized solar cells can be fabricated on a transparent and flexible substrate, they can be manufactured in building integrated photovoltaic systems (BIPVs), automotive window photovoltaic systems, and flexible display devices. It is a promising solar cell for practical applications such as embedded portable solar cells.

Typical dye-sensitized solar cells consist of an electrolyte with a dye-sensitized mesoscopic TiO ₂ photoanode (one electrode), a Pt counter electrode, and an I ₃ / I-reducing coupler. Operation of the dye-sensitized solar cell is initiated by light-induced oxidation of the dye molecule, the oxidized dye molecule accepts electrons from the iodide ions in the electrolyte, and the resulting tri-idoid ions are trapped at the counter electrode. It is reduced back to the oidoid ion.

Meanwhile, tin oxide doped with fluorine (F) is mainly used as one electrode of a dye-sensitized solar cell, and a titanium (Ti) substrate is mainly used as one electrode in a flexible dye-sensitized solar cell. do.

However, since titanium substrates are expensive, there are attempts to use conductive metal substrates such as stainless steel as one electrode in consideration of economic aspects.

However, conductive metal substrates, such as stainless steel, have problems in terms of long-term stability because they can be corroded by the electrolyte.

Republic of Korea Patent Publication No. 10-2011-0083011, published 20 July 2011.

The present invention has been proposed to solve the problems of the prior art as described above, to provide a one electrode for a dye-sensitized solar cell including a corrosion protection film to improve long-term stability.

In addition, the present invention provides a dye-sensitized solar cell having a single electrode which is enhanced in such a corrosion.

In addition, the present invention provides a method for manufacturing the dye-sensitized solar cell and one electrode for a dye-sensitized solar cell.

As a first aspect of the present invention, one electrode for a dye-sensitized solar cell is provided to prevent corrosion of the conductive metal film by a conductive metal film and an electrolyte layer formed on the conductive metal film to constitute the dye-sensitized solar cell. Corrosion prevention film may be included.

The anti-corrosion film may be formed of graphene or graphene oxide. The corrosion protection film may include a positively charged graphene oxide sheet and a negatively charged graphene oxide sheet. The anti-corrosion film, the positively charged graphene oxide sheet and the negatively charged graphene oxide sheet may be alternately stacked alternately.

As a second aspect of the present invention, a dye-sensitized solar cell includes one electrode including a conductive metal film and a corrosion preventing film formed on the conductive metal film to prevent corrosion of the conductive metal film, and a photosensitive dye. It may include an absorbing layer, an electrolyte layer disposed to face the corrosion protection film with the light absorbing layer therebetween, and a counter electrode disposed to face the one electrode with the light absorbing layer and the electrolyte layer interposed therebetween.

The anti-corrosion film may be formed of graphene or graphene oxide. The corrosion protection film may include a positively charged graphene oxide sheet and a negatively charged graphene oxide sheet. The anti-corrosion film, the positively charged graphene oxide sheet and the negatively charged graphene oxide sheet may be alternately stacked alternately.

According to a third aspect of the present invention, there is provided a method of manufacturing an electrode for a dye-sensitized solar cell, the method comprising preparing a conductive metal film, and forming the conductive metal film on the conductive metal film by the electrolyte layer constituting the dye-sensitized solar cell. Forming a corrosion protection film to prevent corrosion may include.

Here, the forming of the anti-corrosion film may be formed using graphene or graphene oxide. Forming the anti-corrosion film, the upper surface of the conductive metal film may be coated with a positively charged graphene oxide solution and a negatively charged graphene oxide solution. Forming the anti-corrosion film, the first coating step of coating the upper surface of the conductive metal film of any one of the positively charged graphene oxide solution or the negatively charged graphene oxide solution, and the upper surface of the coated conductive metal film It may include a second coating step of coating with a solution different from the first coating step of the positively charged graphene oxide solution or the negatively charged graphene oxide solution. The forming of the anti-corrosion film may be performed by alternately repeating the first coating step and the second coating step a predetermined number of times. The forming of the anti-corrosion film may include: a cleaning step of cleaning the top surface of the conductive metal film before the first coating step, a cleaning step of cleaning the top surface of the conductive metal film after the first coating step, or the second After the coating step, at least one cleaning step may be performed among the cleaning steps for cleaning the upper surface of the conductive metal film.

As a fourth aspect of the present invention, a method of manufacturing a dye-sensitized solar cell includes: forming an electrode including a conductive metal film and a corrosion preventing film formed on the conductive metal film to prevent corrosion of the conductive metal film; Forming a light absorbing layer including a photosensitive dye on an upper surface of the corrosion preventing film, forming a counter electrode, and disposing a counter electrode on an upper side of the light absorbing layer so as to face the one electrode and being spaced apart from each other; The method may include forming an electrolyte layer including an electrolyte between the light absorbing layer and the counter electrode.

Here, the forming of the one electrode may include forming the corrosion preventing film by using graphene or graphene oxide. Forming the anti-corrosion film, the upper surface of the conductive metal film may be coated with a positively charged graphene oxide solution and a negatively charged graphene oxide solution. Forming the anti-corrosion film, the first coating step of coating the upper surface of the conductive metal film of any one of the positively charged graphene oxide solution or the negatively charged graphene oxide solution, and the upper surface of the coated conductive metal film It may include a second coating step of coating with a solution different from the first coating step of the positively charged graphene oxide solution or the negatively charged graphene oxide solution. The forming of the anti-corrosion film may be performed by alternately repeating the first coating step and the second coating step a predetermined number of times. The forming of the anti-corrosion film may include: a cleaning step of cleaning the top surface of the conductive metal film before the first coating step, a cleaning step of cleaning the top surface of the conductive metal film after the first coating step, or the second After the coating step, at least one cleaning step may be performed among the cleaning steps for cleaning the upper surface of the conductive metal film.

According to an embodiment of the present invention, by providing a one electrode for a dye-sensitized solar cell comprising a corrosion preventing film to prevent corrosion of the conductive metal film, one electrode and a dye having the same by preventing the conductive metal film from being corroded by the electrolyte There is an effect of improving the long-term stability of the sensitized solar cell.

1 is a cross-sectional view showing the structure of a dye-sensitized solar cell having one electrode for a dye-sensitized solar cell according to an embodiment of the present invention.
2 is a flowchart illustrating a method of manufacturing one electrode for a dye-sensitized solar cell according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

In describing the embodiments of the present disclosure, when it is determined that a detailed description of a known function or configuration may unnecessarily obscure the subject matter of the present disclosure, the detailed description thereof will be omitted. Terms to be described below are terms defined in consideration of functions in the embodiments of the present invention, and may vary according to intentions or customs of users or operators. Therefore, the definition should be based on the contents throughout this specification.

1 is a cross-sectional view showing the structure of a dye-sensitized solar cell having one electrode for a dye-sensitized solar cell according to an embodiment of the present invention.

As shown therein, the dye-sensitized solar cell includes one electrode 100, a light absorbing layer 200, a counter electrode 300, an electrolyte layer 400, and the like.

The one electrode 100 has a conductive metal film 120 formed on the transparent substrate 110, and anti-corrosion films 131 and 133 are formed on the conductive metal film 120. Here, the transparent substrate 110 is to protect the conductive metal film 120 from an external force, and may exclude the transparent substrate 110 from the components of the one electrode 100.

As the transparent substrate 110, a glass substrate may be used. As another example, the transparent substrate 110 may use polyethylene terephthalate, polyethylenenaphthalate, polycarbonate, or triacetyl cellulose.

The conductive metal film 120 may use a stainless steel substrate. As another example, the conductive metal layer 120 may include titanium (Ti), zinc (Zn), aluminum (Al), chromium (Cr), gold (Au), silver (Ag), copper (Cu), iron (Fe), Metal substrates such as nickel (Ni), silicon (Si), molybdenum (Mo), tin (Sn), and lead (Pd) can be used.

Corrosion preventing films 131 and 133 may use a graphene film or a graphene oxide film. The corrosion preventing films 131 and 133 may be formed in a single layer, or may be formed in a plurality of layers as illustrated in FIG. 1. For example, when a graphene oxide film is used, the anti-corrosion films 131 and 133 are formed by laminating a positively charged oxide sheet 131 formed by applying a positively charged oxide solution and a negatively charged oxide sheet 133 formed by applying a negatively charged oxide solution. can do. The anti-corrosion films 131 and 133 may be formed by sequentially stacking one layer of positively charged oxide sheet 131 and a negatively charged oxide sheet 133 in reverse order or in reverse order, as shown in FIG. 1. Repeatedly performed twice, two layers of positively charged oxide sheet 131 and negatively charged oxide sheet 133 may be formed by sequentially or in reverse order. In addition, if necessary, the number of repetitions of the lamination process may be increased to increase the number of laminations.

The light absorbing layer 200 may be formed by adsorbing a photosensitive dye in which electrons are excited by absorbing visible light to the semiconductor fine particles. As the semiconductor fine particles, in addition to a single semiconductor represented by silicon, a complex metal oxide having a metal oxide or a perovskite structure, or the like can be used. Here, the semiconductor may be an n-type semiconductor in which conduction band electrons become carriers under photo excitation to provide an anode current. Specifically, the semiconductor fine particles may have at least one coating layer of TiOx, WOx, SnOx, or ZnOx. The kind of semiconductor fine particles is not limited to these, You may use these individually or in mixture of 2 or more types. The dye may be used without any limitation as long as it is generally used in the solar cell or photovoltaic field. For example, ruthenium complexes can be used. As ruthenium complexes, RuL2 (SCN) 2, RuL2 (H2O) 2, RuL3, RuL2 and the like can be used (wherein L represents 2,2'-bipyridyl-4,4'-dicarboxylate). In addition to the ruthenium complex, the dye is, for example, xanthine-based pigments such as rhodamine B, rosebengal, eosin, erythrosin, cyanine-based pigments such as quinocyanine and cryptocyanine, phenosafranin, cabrioblue, thiocin, Basic dyes such as methylene blue, porphyrin compounds such as chlorophyll, zinc porphyrin, magnesium porphyrin, other azo dyes, phthalocyanine compounds, complexes such as Ru trisbipyridyl, anthraquinone dyes, and polycyclic quinone dyes. These may be used alone or in combination of two or more thereof.

The counter electrode 300 has a structure in which a transparent conductive film 320 is formed on the transparent substrate 310. As the transparent substrate 310, a glass substrate may be used. As another example, the transparent substrate 310 may use polyethylene terephthalate, polyethylenenaphthalate, polycarbonate, or triacetyl cellulose. The transparent conductive film 320 has thermal stability and TiO2 bonding property on a gallium (Ga) doped zinc oxide (ZnO) thin film layer having high electrical conductivity and light transmittance, or a gallium (Ga) doped zinc oxide (ZnO) thin film layer. Excellent, the dopant may be implemented to include a doped tin oxide (SnO 2) thin film layer. Here, the transparent substrate 310 is to protect the transparent conductive film 320 from external force, and the transparent substrate 310 may be excluded from the components of the counter electrode 300.

The electrolyte layer 400 is made of an electrolyte solution. The electrolyte is an iodine-based oxidation / reduction pair (I- / I _3- ), which receives electrons from the counter electrode 300 by oxidation and reduction and transfers the electrons to the dye. It is determined by the difference in the acid conversion and reduction level of the electrolyte. The electrolyte is uniformly distributed between the one electrode 100 and the counter electrode 300, and may also be infiltrated into the light absorbing layer 200. As the electrolytic solution, for example, a solution in which iodine is dissolved in acetonitrile may be used, but the solution is not limited thereto, and any electrolytic solution may be used without limitation as long as it has a hole conduction function.

When sunlight is incident into the dye-sensitized solar cell configured as described above, photons are first absorbed by dye molecules in the light absorbing layer 200, and the dye molecules electron-transfer from the ground state to the excited state to form electron-hole pairs. Electrons in the excited state are injected into the conduction band of the semiconductor fine particle interface, and the injected electrons are transferred to the one electrode 100 through the interface. After that, it moves to the counter electrode 300 through an external circuit. On the other hand, the dye oxidized as a result of the electron transition is reduced by the redox ions in the electrolyte layer 400, and the oxidized ions are reduced with the electrons reaching the interface of the counter electrode 300 to achieve charge neutrality. Reaction causes dye-sensitized solar cell to work

2 is a flowchart illustrating a method of manufacturing one electrode for a dye-sensitized solar cell according to an embodiment of the present invention.

As described above, the method of manufacturing the one electrode for a dye-sensitized solar cell according to the embodiment of the present invention includes preparing a positively charged graphene oxide solution, a negatively charged graphene oxide solution, and a metal substrate (S501 and S503), and positively charged graph Forming a corrosion protection film on the metal substrate using a pin oxide solution and a negatively charged graphene oxide solution (S505 to S517). Here, the metal substrate prepared in step S503 corresponds to the conductive metal film 120 described with reference to FIG. 1.

Forming the anti-corrosion film according to the steps S505 to S517, cleaning the metal substrate to introduce a hydrophilic surface (S505), and any one of a positively charged graphene oxide solution or a negatively charged graphene oxide solution on the cleaned metal substrate Cleaning the metal substrate after coating with a solution of (S507 and S509), and cleaning the metal substrate after coating with a solution of either a positively charged graphene oxide solution or a negatively charged graphene oxide solution on the cleaned metal substrate after coating Steps S511 and S513 and heat-treating the metal substrate on which the coating and cleaning are completed are performed to improve transparency (S517).

Here, the coating order of the positively charged graphene oxide solution and the negatively charged graphene oxide solution may be coated with the positively charged graphene oxide solution first, as shown in FIG. May be coated. In addition, the cleaning step of the step S505, the cleaning step of the step 509 or the cleaning step of the step S513 may be excluded from the overall process, it may be performed only one cleaning step.

In addition, the coating and cleaning processes of steps S507 to S513 may be repeated one more time or repeated several times. The number of repetitions of the coating and cleaning processes may be preset, and when the corrosion prevention film is formed in a predetermined layer by repeating the preset number of times, the subsequent heat treatment may be performed.

Looking at the manufacturing process of the one electrode by the steps S501 to S517 in more detail according to the embodiment as follows.

Graphite oxide was synthesized according to the modified Hummers method ( Nature Nanotech. 2008, 3 , 101; J. Am. Chem. Soc . 1958, 80 , 1339) and peeled off under sonication to give a brown dispersion of graphene oxide. . The graphene oxide obtained has a negative charge over a wide range of pH conditions since the graphene oxide sheet has a chemical functional group such as carboxylic acid.

The graphene oxide is positively charged N- ethyl - N'- (3- dimethylaminopropyl) carbodiimide to carboxylic thio bonded (EDC, 98%, Alfa Aesar ) and ethylenediamine (99%, Sigma-Aldrich) synthesized by the It became. That is, the negatively charged graphene oxide suspension (50 mL) prepared above was reacted with EDC (600 mg) and ethylenediamine (4 mL), stirred for about 4 hours, and the resulting mixture was dialyzed for about 24 hours, and the pH of the dialysis solution was neutral. EDC and ethylenediamine were removed until At this time, the molecular weight of cut-off (MWCO) of the dialysis tube (Spectra / Por dialysis membrane) is 12 to 14 kD. Thereafter, a dark brown suspension of positively charged graphene oxide was obtained.

Typical stainless steel substrates were cleaned with oxygen plasma to introduce a hydrophilic surface. A positively charged graphene oxide solution (about 0.5 mg / mL) was dropped at about pH 4 on a stainless steel substrate loaded in a spin coater (ACE-200, Dong Ah Tech), and maintained for about 2 minutes in latency. Rotation was performed at 3,000 rpm for about 30 seconds. As a washing step, distilled water was dropped on the substrate coated with positively charged graphene oxide at the same pH, maintained for about 2 minutes, and rotated at about 3,000 rpm for about 30 seconds. Next, a negatively charged graphene oxide solution (about 0.5 mg / mL) at about pH 10 was spin coated in the same procedure and then washed. Thereafter, the sample obtained by repeating the positively charged graphene oxide coating and cleaning and the negatively charged graphene oxide coating and cleaning one more time, respectively, was heat treated at about 550 ° C. under vacuum for about 30 minutes to improve electrical conductivity.

Hereinafter, a process of manufacturing the dye-sensitized solar cell including the one electrode for the dye-sensitized solar cell according to the embodiment of the present invention will be described. The various numerical values set forth below are by way of example only, and numerical values exceeding or below 10% may be used based on the numerical values presented.

The nanocrystalline-TiO ₂ paste (about 20 nm) was coated on the upper surface of the one electrode by a doctor blading method. The coated electrode was aged at about 60 ° C. for about 1 hour and heat-treated at 400-450 ° C. for about 1 hour. As a result, the thickness of the one electrode was about 12 mu m. One electrode coated with a porous TiO ₂ film was dissolved in a mixed solvent of acetonitrile and tertiary-butanol (v / v: 1/1) at room temperature for about 20 hours at about 0.5 mM (Bu ₄ N) ₂ [Ru ( Immerse in dcbpyH) ₂ (NCS) ₂ ] (N719) solution.

For the preparation of the counter electrode, the FTO glass was prepared according to the above-described methods such as cleaning and UV-O ₃ treatment, and perforation was made on the FTO glass. A solution of about 10 mM H ₂ PtCl ₆ dissolved in 2-propanol was coated on perforated FTO glass and heat treated at about 450 ° C. for about 30 minutes.

The counter electrode thus prepared was placed on a dye coated TiO ₂ electrode, and a slice of about 50 μm thick was placed between sandwich cells, and pressed and sealed at about 120 ° C. for about 5 seconds. The sealed cell was placed in a small vacuum chamber with a drop of electrolyte to remove internal air and exposed to ambient pressure to inject electrolyte into the cell. At this time, the composition of the electrolyte solution is 1-hexyl-2,3-dimethyl-imidazolium iodide (0.6M), lithium iodide (0.1M), iodide (0.05M) dissolved in acetonitrile and 4-tert-butylpyridine (0.5M) was included. The perforations were closed using about 50 μm thick slices and cover glass (about 0.1 mm thick).

The photovoltaic performance of the dye-sensitized solar cell including the one electrode for the dye-sensitized solar cell according to the embodiment of the present invention is as follows.

According to the prior art using stainless steel as one electrode and an embodiment of the present invention, a current-voltage is applied to a dye-sensitized solar cell coated with a positively charged graphene oxide sheet and a negatively charged graphene oxide sheet on the stainless steel as one electrode. The properties were measured.

Table 1 below shows the results of the cell measurement under the illumination conditions (AM 1.5, 100 mW / cm ² ; model ORIEL-Sol-3A, Newport) using a current-voltage characteristic meter (model 2400, Keithly). Efficiency (E _ff ), short-circuit current (J _sc ), open-circuit voltage (V _oc ), and fill factor (FF) are summarized.

sample E _ff (%) V _oc (V) J _sc (mA / cm ² ) FF Conventional technology 7.4 0.72 17.2 59.8 Invention 7.6 0.68 18.8 59.4

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas falling within the scope of the present invention should be construed as being included in the scope of the present invention.

100: one electrode 110: transparent substrate
120: conductive metal film 131: positively charged graphene oxide sheet
133: negatively charged graphene oxide sheet 200: light absorbing layer
300: counter electrode 310: transparent substrate
320: transparent conductive film 400: electrolyte layer

Claims (20)

delete As one electrode for dye-sensitized solar cell,
Conductive metal film,
A corrosion prevention film formed on the conductive metal film to prevent corrosion of the conductive metal film by an electrolyte layer constituting the dye-sensitized solar cell,
The anti-corrosion film is formed of graphene or graphene oxide
One electrode for dye-sensitized solar cell. 3. The method of claim 2,
The corrosion prevention film, including a positively charged graphene oxide sheet and a negatively charged graphene oxide sheet
One electrode for dye-sensitized solar cell. The method of claim 3, wherein
The anti-corrosion film, the positively charged graphene oxide sheet and the negatively charged graphene oxide sheet alternately stacked alternately
One electrode for dye-sensitized solar cell. delete As a dye-sensitized solar cell,
An electrode including a conductive metal film and a corrosion preventing film formed on the conductive metal film to prevent corrosion of the conductive metal film;
A light absorption layer containing a photosensitive dye,
An electrolyte layer disposed to face the corrosion preventing film with the light absorbing layer therebetween;
A counter electrode disposed to face the one electrode with the light absorbing layer and the electrolyte layer interposed therebetween;
The anti-corrosion film is formed of graphene or graphene oxide
Dye-Sensitized Solar Cell. The method according to claim 6,
The corrosion prevention film, including a positively charged graphene oxide sheet and a negatively charged graphene oxide sheet
Dye-Sensitized Solar Cell. The method of claim 7, wherein
The anti-corrosion film, the positively charged graphene oxide sheet and the negatively charged graphene oxide sheet alternately stacked alternately
Dye-Sensitized Solar Cell. delete As a manufacturing method of one electrode for a dye-sensitized solar cell,
Preparing a conductive metal film;
Forming a corrosion preventing film on the conductive metal film to prevent corrosion of the conductive metal film by an electrolyte layer constituting the dye-sensitized solar cell,
Forming the anti-corrosion film is formed using graphene or graphene oxide
Method for producing one electrode for dye-sensitized solar cell. 11. The method of claim 10,
The forming of the anti-corrosion film may include coating a top surface of the conductive metal film with a positively charged graphene oxide solution and a negatively charged graphene oxide solution.
Method for producing one electrode for dye-sensitized solar cell. The method of claim 11,
Forming the anti-corrosion film, the first coating step of coating the upper surface of the conductive metal film of any one of the positively charged graphene oxide solution or the negatively charged graphene oxide solution, and the upper surface of the coated conductive metal film A second coating step of coating with a solution different from the first coating step in the positively charged graphene oxide solution or the negatively charged graphene oxide solution
Method for producing one electrode for dye-sensitized solar cell. 13. The method of claim 12,
The forming of the anti-corrosion film may be performed by alternately repeating the first coating step and the second coating step a predetermined number of times.
Method for producing one electrode for dye-sensitized solar cell. 13. The method of claim 12,
The forming of the corrosion preventing film may include: a cleaning step of cleaning the top surface of the conductive metal film before the first coating step, a cleaning step of cleaning the top surface of the conductive metal film after the first coating step, or the second Performing at least one cleaning step of cleaning the upper surface of the conductive metal film after the coating step
Method for producing one electrode for dye-sensitized solar cell. delete As a manufacturing method of a dye-sensitized solar cell,
Forming an electrode including a conductive metal film and a corrosion preventing film formed on the conductive metal film to prevent corrosion of the conductive metal film;
Forming a light absorbing layer including a photosensitive dye on an upper surface of the corrosion preventing film;
Forming a counter electrode;
Disposing a counter electrode on an upper side of the light absorbing layer to be spaced apart from the one electrode;
Forming an electrolyte layer including an electrolyte between the light absorbing layer and the counter electrode,
The forming of the one electrode includes forming the anti-corrosion layer using graphene or graphene oxide.
Manufacturing method of dye-sensitized solar cell. As a manufacturing method of a dye-sensitized solar cell,
Forming an electrode including a conductive metal film and a corrosion preventing film formed on the conductive metal film to prevent corrosion of the conductive metal film;
Forming a light absorbing layer including a photosensitive dye on an upper surface of the corrosion preventing film;
Forming a counter electrode;
Disposing a counter electrode on an upper side of the light absorbing layer to be spaced apart from the one electrode;
Forming an electrolyte layer including an electrolyte between the light absorbing layer and the counter electrode,
The forming of the anti-corrosion film may include coating a top surface of the conductive metal film with a positively charged graphene oxide solution and a negatively charged graphene oxide solution.
Manufacturing method of dye-sensitized solar cell. The method of claim 17,
Forming the anti-corrosion film, the first coating step of coating the upper surface of the conductive metal film of any one of the positively charged graphene oxide solution or the negatively charged graphene oxide solution, and the upper surface of the coated conductive metal film A second coating step of coating with a solution different from the first coating step in the positively charged graphene oxide solution or the negatively charged graphene oxide solution
Manufacturing method of dye-sensitized solar cell. The method of claim 18,
The forming of the anti-corrosion film may be performed by alternately repeating the first coating step and the second coating step a predetermined number of times.
Manufacturing method of dye-sensitized solar cell. The method of claim 18,
The forming of the anti-corrosion film may include: a cleaning step of cleaning the top surface of the conductive metal film before the first coating step, a cleaning step of cleaning the top surface of the conductive metal film after the first coating step, or the second Performing at least one cleaning step of cleaning the upper surface of the conductive metal film after the coating step
Manufacturing method of dye-sensitized solar cell.

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