KR20100106837A - Method for sealing dye sensitized solar cell and method for preparing comprising the sealing method - Google Patents

Abstract

PURPOSE: A dye sensitive solar battery manufacturing method including a sealing method and a sealing step of dye sensitive solar battery is provided to manufacture the dye sensitive solar battery by sealing the joining and heat processing by forming a adhesive polymer layer between glass rim layers. CONSTITUTION: A transparent conductive oxide layer is formed on the top of the transparent substrate. A glass frit rim layer(3) is formed on the top of the transparent conductive oxide layer. A cathode electrode(10) is manufactured by forming the nano oxide layer on the inside of the glass frit rim layer. An anode electrode(20) is manufactured by forming the metal layer on the inside of a glass frit rim layer(23).

Description

METHOD FOR SEALING DYE SENSITIZED SOLAR CELL AND METHOD FOR PREPARING COMPRISING THE SEALING METHOD}

The present invention relates to a dye-sensitized solar cell, a method of manufacturing a dye-sensitized solar cell and a method of sealing a dye-sensitized solar cell sealed to improve long-term stability.

Recently, the importance of developing the next generation of clean energy is increasing due to serious environmental pollution and depletion of fossil energy. Among them, the solar cell is a device that directly converts solar energy into electrical energy, and is expected to be an energy source capable of solving future energy problems due to its low pollution, infinite resources, and a semi-permanent lifetime.

The solar cells are classified into materials according to the material, and there are inorganic solar cells, dye-sensitized solar cells, and organic solar cells.

Single crystal silicon is mainly used as an inorganic solar cell, and such single crystal silicon-based solar cell has an advantage of being manufactured as a thin-film solar cell, but has a problem of high cost and low stability.

Dye-sensitized solar cells, unlike conventional silicon solar cells by pn junctions, are capable of absorbing visible light to produce electron-hole pairs and photosensitive dye molecules that deliver the generated electrons. It is a photoelectrochemical solar cell using a transition metal oxide as a main constituent material. Dye-sensitized solar cells can withstand long-term exposure to light and heat, compared to conventional silicon-based solar cells, and can produce energy inexpensively and easily.

As a representative example of dye-sensitized solar cells known so far, there are those published by Gratzel et al. (US Pat. Nos. 4,927,721 and 5,350,644). The dye-sensitized solar cell proposed by Gratzel et al. Consists of a semiconductor electrode composed of nanoparticle titanium dioxide (TiO ₂ ) coated with dye molecules, a counter electrode coated with platinum or carbon, and an electrolyte solution filled between these electrodes. . This photoelectrochemical solar cell has attracted attention due to the low manufacturing cost per power compared to the conventional silicon solar cell. The dye-sensitized solar cell technology developed by Gratzel has proved to be promising as an inexpensive alternative to expensive silicon solar cells.

Currently, dye-sensitized solar cells based on titanium dioxide have an overall sunlight conversion efficiency of less than 11%, which is about twice that of silicon solar cell technology. A major obstacle to dye-sensitized solar cells is an electrolyte solution consisting of volatile organic solvents (VOCs), which need to be carefully sealed. As solvents penetrate plastics, electrolyte solutions consisting of volatile organic solvents have been a factor that makes large scale outdoor applications and integration into flexible structures impossible.

In order to solve this problem, a method for sealing an electrolyte solution in a dye-sensitized solar cell has been actively studied. The most common method for sealing an electrolyte solution in a dye-sensitized solar cell is to use a polymer adhesive. In addition, a polymer such as SURLYN (trade name Du Pont) is a method for sealing an electrolyte solution in a dye-sensitized solar cell. A method of sealing with a polymer layer or a polymer film is known through the Republic of Korea Patent No. 0648273, Republic of Korea Patent No. 0578799.

In addition, the Fraunhofer Institute for Solar Energy Systems has developed a technique for sealing electrolyte frit with glass frit instead of using polymer adhesive as a method for sealing electrolyte solutions in dye-sensitized solar cells. The characteristic is that after screen printing the glass powder on the glass window and fusing them at a temperature of 600 ℃ Celsius to seal.

However, the method of forming and sealing the polymer layer by cutting the electrolyte solution in the dye-sensitized solar cell described above (SURLYN; Du Pont Co., Ltd.) has a problem in that the electrolyte solution melts into the slice and evaporates little by little. After that, the adhesive strength of the slice is weakened, so that the working electrode and the counter electrode are separated, thereby causing damage to the battery.

In addition, the technology for sealing dye-sensitized solar cells with glass frit developed by Fraunhofer Solar Energy System Research Institute has excellent long-term stability, but the sealing temperature (300 ~ 500 ℃) is higher than that of organic materials. Since the dye must be adsorbed after the bonding, there is a problem that the manufacturing process is very complicated and takes a lot of manufacturing time.

In order to solve such a problem, the present inventors have diligently studied a method for sealing a dye-sensitized solar cell, and compared with the solar cell sealed using a conventional Slinky (trade name of Du Pont). In order to improve the long-term stability and improve the light conversion efficiency, the present inventors have developed a sealed dye-sensitized solar cell, a manufacturing method of the dye-sensitized solar cell and a sealing method of the dye-sensitized solar cell.

DETAILED DESCRIPTION OF THE INVENTION An object of the present invention is a dye-sensitized solar cell, a method of manufacturing a dye-sensitized solar cell, and a dye-sensitized solar cell, which exhibit light conversion efficiency comparable to that of a dye-sensitized solar cell manufactured by a conventional sealing method, and at the same time, long-term stability can be improved. It is to provide a sealing method.

In order to achieve the above object, the present invention is to form a glass frit rim layer on the transparent substrate on which the transparent conductive oxide layer is formed, and to form a nano oxide layer adsorbed dye inside the glass frit rim layer formed cathode Preparing an electrode (step 1); Forming a glass frit rim layer on the transparent substrate on which the transparent conductive oxide layer is formed, and forming a metal layer inside the formed glass frit rim layer (step 2); And opposing the cathode electrode prepared in step 1 and the anode electrode prepared in step 2, and then sealing an adhesive electrode by forming an adhesive polymer layer on the glass frit edge layer on both electrodes (step 2). It provides a method for manufacturing a sealed dye-sensitized solar cell to improve the long-term stability, including 3).

In addition, the present invention comprises the steps of preparing a cathode electrode after forming a glass frit rim layer on the transparent substrate on which the transparent conductive oxide layer is formed (step a); Manufacturing a bipolar electrode after forming a glass frit edge layer on the transparent substrate on which the transparent conductive oxide layer is formed (step b); And after the anode electrode prepared in step a and the anode electrode prepared in step b are opposed to each other, forming an adhesive polymer layer on the glass frit rim layer on both electrodes and sealing them by bonding both electrodes (step It provides a method for sealing a dye-sensitized solar cell comprising c).

In addition, the present invention is a negative electrode; A dye-sensitized solar cell comprising a positive electrode and a sealing portion positioned at an edge of a positive electrode, wherein the sealing portion is interposed between a glass frit edge layer formed on the negative electrode and the positive electrode and a glass frit edge layer of the positive electrode. It provides a dye-sensitized solar cell made of a polymer layer, having a structure in which both electrodes are coupled by the sealing portion.

EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated in detail.

The present invention,

Preparing a cathode electrode by forming a glass frit edge layer on the transparent substrate on which the transparent conductive oxide layer is formed, and forming a nano oxide layer in which dye is adsorbed inside the formed glass frit edge layer (step 1);

Forming a glass frit rim layer on the transparent substrate on which the transparent conductive oxide layer is formed, and forming a metal layer inside the formed glass frit rim layer (step 2); And

After the anode electrode prepared in step 1 and the anode electrode prepared in step 2 are opposed to each other, the adhesive polymer layer is formed on the glass frit edge layer on both electrodes and sealed by bonding both electrodes (step 3 It provides a method for producing a dye-sensitized solar cell comprising a).

Hereinafter, a method of manufacturing a dye-sensitized solar cell according to the present invention will be described in detail with reference to FIGS. 1 to 4.

1 is a side cross-sectional view of a cathodic electrode made in accordance with one embodiment of the present invention.

In step 1, the glass frit edging layer 3 is formed on the transparent substrate 1 on which the transparent conductive oxide layer 2 is formed, and the dye-adsorbed nano oxide layer inside the formed glass frit edging layer 3 ( 4) to form a cathode-based electrode (10).

Referring to FIG. 1, the glass frit edge layer 3 is first formed on the transparent substrate 1 on which the transparent conductive oxide layer 2 is formed. The glass frit rim layer 3 is formed in consideration of the size and thickness of the nano oxide layer 4 on which the dye to be adsorbed is formed, and more specifically, the glass frit rim layer 3 is a nano oxide layer on which the dye is adsorbed. In consideration of the size and thickness of (4), the edge of the frame is formed by the glass grate, and then the glass powder is formed by screen printing the glass grate. After forming the glass frit rim layer 3 on the transparent substrate 1 as described above Heat treatment at 300-500 ° C. causes glass grate and glass powder to fuse. In addition, various methods of forming an edge with glass frit may be used.

As the transparent substrate 1 used in the present invention, a glass substrate or a transparent plastic substrate may be used, and the transparent plastic substrate may be polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyethylene (PE), or polyether. Sulfon (PES), polycarbonate (PC), polyarylate (PAR), polyimide (PI) and the like can be used, but is not limited thereto.

A transparent conductive oxide layer 2 is formed on the transparent substrate 1, and as the material of the transparent conductive oxide layer 2, tin oxide (FTO), indium tin oxide (ITO), and indium zinc doped with fluorine are formed. Oxide (IZO), indium zinc tin oxide (IZTO), aluminum zinc oxide (AZO), indium tin oxide-silver-indium tin oxide (ITO-Ag-ITO), indium zinc oxide-silver-indium zinc oxide (IZO-Ag -IZO), indium zinc tin oxide-silver-indium zinc tin oxide (IZTO-Ag-IZTO), aluminum zinc oxide-silver-aluminum zinc oxide (AZO-Ag-AZO), and the like, in particular fluorine-doped Tin oxide (FTO) is preferred. The transparent conductive oxide layer 2 may be formed by any one of sputtering, chemical vapor deposition (CVD), evaporation, thermal oxidation, and electrochemical anodization. Can be formed.

As described above, after forming the glass frit edge layer 3 on the transparent substrate 1 on which the transparent conductive oxide layer 2 is formed, the nano oxide layer on which the dye is adsorbed inside the glass frit edge layer 3 is formed. (4) is formed.

In order to form the nano oxide layer 4 on which the dye is adsorbed, a nano oxide layer is formed inside the glass frit edge layer 3. The nano oxide layer may be provided with a transition metal oxide, in particular titanium dioxide, a composition containing titanium dioxide may be applied by a doctor blade method, a screen printing method and the like.

Thereafter, in order to adsorb the dye to the nano oxide layer formed inside the glass frit edge layer 3, the transparent substrate 1 on which the nano oxide layer is formed is immersed in a dye solution to adsorb the dye.

As the dye solution, a mixture of a dye and an alcohol solution may be used, and as the dye, a material capable of absorbing visible light, including a ruthenium (Ru) complex, may be used, and in addition, the long wavelength absorption in visible light may be improved to improve efficiency. Of course, it is also possible to use dyes that improve the properties and new types of dyes that are easy to emit electrons.

As such, the glass frit edge layer 3 is formed on the transparent substrate 1 on which the transparent conductive oxide layer 2 is formed, and the nano oxide layer having dye adsorbed inside the formed glass frit edge layer 3 ( 4) to form a cathode-based electrode (10).

2 is a side cross-sectional view of a bipolar electrode manufactured according to an embodiment of the present invention.

In step 2, the glass frit edge layer 23 is formed on the transparent substrate 21 on which the transparent conductive oxide layer 22 is formed, and the metal layer 25 is formed on the inner side of the formed glass frit edge layer 23 to form an anode. The system electrode 20 is manufactured.

Referring to FIG. 2, the glass frit edge layer 23 is first formed on the transparent substrate 21 on which the transparent conductive oxide layer 22 is formed. The glass frit edging layer 23 is formed in consideration of the size and thickness of the metal layer 25 to be formed inside, and more specifically, the glass frit edging layer 23 is used to determine the size and thickness of the metal layer 25 to be formed inside. After forming the contour of the rim with the glass grate in consideration, the glass powder is formed by screen printing on the glass grate. After forming the glass frit edge layer 23 on the transparent substrate 21 as described above Heat treatment at 300-500 ° C. causes glass grate and glass powder to fuse.

As the transparent substrate 21, a glass substrate and a transparent plastic substrate may be used as described above.

After forming the glass frit edge layer 23 on the transparent substrate 21 on which the transparent conductive oxide layer 22 is formed, the metal layer 25 is formed inside the glass frit edge layer 23.

The metal layer 25 is made of a material that can be energized. Preferably, the metal layer 25 may be made of a precious metal material such as platinum (Pt). Platinum (Pt) has a good reflectivity, the transmitted visible light is reflected into the interior of the solar cell is advantageous for the efficiency of light absorption. In addition, in addition to platinum (Pt), other precious metal materials having a low resistance value can also be used.

As described above, the glass frit edge layer 23 is formed on the transparent substrate 21 on which the transparent conductive oxide layer 22 is formed, and the metal layer 25 is formed inside the glass frit edge layer 23. A bipolar electrode 20 is manufactured.

3 is a view schematically showing a process of bonding and sealing a cathode electrode and an anode electrode manufactured according to an embodiment of the present invention. 4 is a side cross-sectional view of a dye-sensitized solar cell prepared according to one embodiment of the invention.

3 and 4, in Step 3, the cathode electrode 10 prepared in Step 1 and the anode electrode 20 prepared in Step 2 are opposed to each other, and then the upper portion of the glass frit edge layer on both electrodes is disposed. The adhesive polymer layer 30 is formed to bond the two electrodes to manufacture the sealed dye-sensitized solar cell 40.

As shown in FIG. 3, the glass frit edge layers 3 and 23 formed on the transparent substrate in steps 1 and 2 are formed in the same size and shape so as to be bonded to each other, as shown in FIG. 4. An adhesive polymer layer is formed to couple both electrodes between the glass frit edge layers 2 and 23 formed on the electrode 10 and the bipolar electrode 20.

The adhesive polymer layer may be an ionomer resin or a thermosetting epoxy resin made by crosslinking metal ions to an ethylene methacrylic acid copolymer such as SURLYN (trade name of Du Pont), but is not limited thereto.

The adhesive polymer layer formed on the glass frit edge layer on the transparent substrate is preferably formed to a thickness of 1 to 10 ㎛. When the adhesive polymer layer is formed in excess of 10 ㎛ thickness long-term stability of the dye-sensitized solar cell may be lowered.

As such, after the cathode electrode 10 prepared in Step 1 and the anode electrode 20 prepared in Step 2 are opposed to each other, an adhesive polymer layer 30 is formed between the glass frit edge layers on both electrodes. And dye-sensitized solar cell 40 by sealing by bonding and heat treatment.

In the method of manufacturing a dye-sensitized solar cell of the present invention, the cathode and the anode are bonded and sealed in step 3, and then the electrolyte solution is introduced through the perforated holes in the anode. It may further comprise a step.

The hole formed in the bipolar electrode may be a perforated hole after forming the bipolar electrode in step 2, and may be a perforated hole after sealing the negative electrode and the bipolar electrode in step 3. As the electrolyte solution that can be used in the present invention, various materials can be used within the range in which electrons can be supplied by the oxidation-reduction reaction.

In addition, the present invention comprises the steps of preparing a cathode electrode after forming a glass frit rim layer on the transparent substrate on which the transparent conductive oxide layer is formed (step a); Manufacturing a bipolar electrode after forming a glass frit edge layer on the transparent substrate on which the transparent conductive oxide layer is formed (step b); And after the anode electrode prepared in step a and the anode electrode prepared in step b are opposed to each other, forming an adhesive polymer layer on the glass frit rim layer on both electrodes and sealing them by bonding both electrodes (step It provides a method for sealing a dye-sensitized solar cell comprising c).

As described above, in the steps a and b, the glass frit edge layers on the transparent substrate are formed in the same size and shape so that they can be bonded to each other. It is preferable to heat-process at 300-500 degreeC.

The adhesive polymer layer formed on the glass frit rim layer on the substrate in step c is formed to a thickness of 1 to 10 μm using an ionomer resin or a thermosetting epoxy resin made by crosslinking metal ions to an ethylene methacrylic acid copolymer. It is desirable to be.

The conventional technique for sealing dye-sensitized solar cells with glass frit has higher sealing temperature (350 ~ 500 ℃) than organic materials, so dye must be adsorbed after joining working electrode and counter electrode. However, the manufacturing method of the dye-sensitized solar cell according to the present invention is a method of sealing the dye-sensitized solar cell according to the present invention after forming the glass frit on each electrode in advance in the manufacturing of the working electrode and the counter electrode, and then the adhesive By using a method of bonding with a polymer has an advantage that the manufacturing process can be simplified.

In addition, the present invention is a negative electrode; A dye-sensitized solar cell comprising a positive electrode and a sealing portion positioned at an edge of a positive electrode, wherein the sealing portion is interposed between a glass frit edge layer formed on the negative electrode and the positive electrode and a glass frit edge layer of the positive electrode. It provides a dye-sensitized solar cell made of a polymer layer, having a structure in which both electrodes are coupled by the sealing portion.

The adhesive polymer layer formed between the glass frit edge layer is preferably formed to a thickness of 1 to 10 ㎛ using an ionomer resin or a thermosetting epoxy resin made by crosslinking a metal ion to an ethylene methacrylic acid copolymer, After the positive electrodes are combined, a heat treatment process is performed to seal the two electrodes.

The dye-sensitized solar cell according to the present invention exhibits light conversion efficiency comparable to that of a dye-sensitized solar cell sealed using a polymer adhesive and has long-term stability.

The present invention is a dye-sensitized solar cell, dye-sensitized solar cell that exhibits a light conversion efficiency comparable to the conventional dye-sensitized solar cell by using an improved sealing method than the conventional dye-sensitized solar cell sealing method and at the same time can be improved long-term stability It has the effect of providing a method for producing a battery and a dye-sensitized solar cell.

Hereinafter, preferred examples are provided to aid the understanding of the present invention, but the following examples are merely for exemplifying the present invention, and it will be apparent to those skilled in the art that various changes and modifications can be made within the scope and spirit of the present invention. It is natural that such variations and modifications fall within the scope of the appended claims.

< Example >

(One) Cathodic  Preparation of the electrode

A transparent glass substrate on which a fluorine-doped tin oxide transparent conductive oxide layer was formed was prepared. A glass frit was formed by coating a glass frit in a rim shape on the transparent conductive oxide layer of the substrate, and heat-treated at 450 ° C. for 30 minutes. The coating composition including titanium dioxide is applied to the inside of the edge of the substrate by a doctor blade method, and heat-treated at 500 ° C. for 30 minutes to allow contact and filling between nano-sized metal oxides to form nano-thickness of about 8 μm. An oxide layer was formed. Subsequently, a coating composition including titanium dioxide was applied to the upper portion of the nano oxide layer by the same method, and heat-treated at a temperature of 500 ° C. for 30 minutes to form a nano oxide layer having a thickness of about 15 μm. Then 0.2 mM ruthenium dithiocyanate 2,2'-bipyridyl-4,4'-dicarboxylate dye solution was prepared. The substrate on which the nano oxide layer was formed was supported for 24 hours, followed by drying to adsorb a dye to the nano-sized metal oxide to prepare a cathode electrode.

(2) Bipolar  Preparation of the electrode

A transparent glass substrate on which a fluorine-doped tin oxide transparent conductive oxide layer was formed was prepared. The glass frit was coated on the transparent conductive oxide layer on the substrate in a rim shape, and heat-treated at 450 ° C. for 30 minutes. A bipolar electrode was prepared by dropping a 2-propanol solution in which platinum hexachloride (H ₂ PtCl ₆ ) was dissolved on the transparent conductive oxide layer in the edge of the substrate, followed by heat treatment at 450 ° C. for 30 minutes to form a platinum layer. It was. Two holes were formed in the prepared anode using a drill.

(3) Manufacture of Dye-Sensitized Solar Cell

After making the nano-oxide layer of the prepared cathode electrode and the platinum layer of the anode electrode face each other, and then forming an adhesive polymer layer having a thickness of about 5 μm (SURLYN; Du Pont Co., Ltd.), 130 ℃ It was put in the oven of and maintained for 2 minutes to bond the two electrodes were sealed. 0.1 M LiI, 0.05 M I2, 0.3 M 1,2-dimethyl-3-propyl-imidazolium iodide (DMPII), 0.5 M 2- (dimethylamino) -pyridine, 0.5 M 5-chloro-1-ethyl-2-methylimidazole was dissolved in a mixed solution of 3 µl of ethylene carbonate and 7 µl of gamma-butyrolactone to prepare a liquid electrolyte. The prepared electrolyte solution was injected into the hole of the positive electrode and sealed using a glass with a hole (SURLYN; Du Pont company).

< Comparative example >

(One) Cathodic  Preparation of the electrode

A transparent glass substrate on which a fluorine-doped tin oxide transparent conductive oxide layer was formed was prepared. Applying a coating composition comprising titanium dioxide on the substrate by a doctor blade method, and heat-treated at 500 ℃ for 30 minutes, so that the contact and filling between nano-sized metal oxide is made to form a nano oxide layer of about 8 ㎛ thickness Formed. Subsequently, a coating composition including titanium dioxide was applied to the upper portion of the nano oxide layer by the same method and heat-treated at a temperature of 500 ° C. for 30 minutes to form a nano oxide layer having a thickness of about 15 μm. Then 0.2 mM ruthenium dithiocyanate 2,2'-bipyridyl-4,4'-dicarboxylate dye solution was prepared. The substrate on which the nano oxide layer was formed was supported for 24 hours, followed by drying to adsorb a dye to the nano-sized metal oxide to prepare a cathode electrode.

(2) Bipolar  Preparation of the electrode

A transparent glass substrate on which a fluorine-doped tin oxide transparent conductive oxide layer was formed was prepared. After dropping a 2-propanol solution in which platinum hexachloride (H ₂ PtCl ₆ ) was dissolved on the transparent conductive oxide layer on the substrate, a platinum layer was formed by heat treatment at 450 ° C. for 30 minutes to prepare an anode-based electrode. Two holes were formed in the prepared anode using a drill.

(3) Manufacture of Dye-Sensitized Solar Cell

After making the nano-oxide layer of the prepared cathode electrode and the platinum layer of the anode electrode face each other, and then forming a polymer layer having a thickness of about 30 μm (SURLYN; Du Pont Co., Ltd.), the oven at 130 ° C. And held for 2 minutes to bond the two electrodes to seal. 0.1 M LiI, 0.05 M I2, 0.3 M 1,2-dimethyl-3-propyl-imidazolium iodide (DMPII), 0.5 M 2- (dimethylamino) -pyridine, 0.5 M 5-chloro-1-ethyl-2-methylimidazole was dissolved in a mixed solution of 3 µl of ethylene carbonate and 7 µl of gamma-butyrolactone to prepare a liquid electrolyte. The prepared electrolyte solution was injected into the hole of the positive electrode and sealed using a glass with a hole (SURLYN; Du Pont company).

< Test Example  1> Light conversion  Efficiency measurement

In order to evaluate the light conversion efficiency of the dye-sensitized solar cells prepared in Examples and Comparative Examples, the photovoltaic characteristics were observed by measuring the photovoltage and the photocurrent in the following manner, and the current density (J _sc ) obtained therefrom, The light conversion efficiency η _e was calculated using the voltage V _oc and the fill factor, ff, by Equation 1 below, and the measured values are shown in Table 1 below.

At this time, Xenon lamp (Oriel) was used as the light source, and the solar condition (AM 1.5) of the xenon lamp was corrected using a standard solar cell.

η _e = (V _oc × J _sc × ff) / (P _ine )

J _sc is the current density, V _oc is the voltage, ff is the filling factor, and P _ine represents 100 mA / cm 2 (1 sun).

division Current density (㎃ / cm ² ) Open voltage (V) Fill factor Optical conversion efficiency (%) Example 12.291 0.795 0.581 5.67 Comparative example 11.920 0.769 0.612 5.61

< Test Example  2> long-term stability measurement

In order to confirm long-term stability, the solar cell prepared in Example and the solar cell prepared in Comparative Example were stored in an oven at 90 ° C. for 24 hours 48 hours 72 hours 96 hours, and are shown in Table 2 by measuring photoelectric conversion efficiency. .

division % Efficiency after 24 hours % Efficiency after 48 hours % Efficiency after 72 hours Efficiency after 96 hours (%) Example 5.67 5.66 5.66 5.64 Comparative example 4.38 - - -

As shown in Table 1, the performance of the dye-sensitized solar cell prepared in the Example according to the present invention and the dye-sensitized solar cell prepared in the Comparative Example appeared similar, as shown in Table 2 In case of stored solar cell, there is almost no change in efficiency even after storing at 90 ° C, but the solar cell manufactured in Comparative Example shows a decrease in efficiency due to leakage of electrolyte after 24 hours when stored at 90 ° C. After the time it was confirmed that the evaporation of the electrolyte does not appear photoelectric conversion efficiency.

1 is a side cross-sectional view of a cathodic electrode made in accordance with one embodiment of the present invention.

2 is a side cross-sectional view of a bipolar electrode manufactured according to an embodiment of the present invention.

3 is a plan view schematically illustrating a process of bonding a cathode electrode and an anode electrode manufactured according to an embodiment of the present invention.

4 is a side cross-sectional view of a dye-sensitized solar cell prepared according to one embodiment of the invention.

Explanation of symbols on the main parts of the drawings

1, 21: transparent substrate 2, 22: transparent conductive oxide layer 3, 23: glass frit edge layer 4: dye-adsorbed nano oxide layer

10: cathode electrode 20: anode electrode

25 metal layer 30 adhesive polymer layer

40: Dye-Sensitized Solar Cell

Claims (18)

Preparing a cathode electrode by forming a glass frit edge layer on the transparent substrate on which the transparent conductive oxide layer is formed, and forming a nano oxide layer in which dye is adsorbed inside the formed glass frit edge layer (step 1); Forming a glass frit rim layer on the transparent substrate on which the transparent conductive oxide layer is formed, and forming a metal layer inside the formed glass frit rim layer (step 2); And Opposing the cathode electrode prepared in step 1 and the anode electrode prepared in step 2, then forming an adhesive polymer layer on the glass frit rim on both electrodes to seal by bonding the two electrodes (step 3) Method for producing a dye-sensitized solar cell comprising a. The method of claim 1, Long-term stability characterized in that it further comprises the step of sealing the hole after the electrolyte and the anode electrode through the hole is bonded to the anode electrode and the anode electrode in step 3 and sealed. The manufacturing method of the dye-sensitized solar cell sealed to improve this. The method of claim 1, The transparent conductive oxide layer is fluorine-doped tin oxide (FTO), indium tin oxide (ITO), indium zinc oxide (IZO), indium zinc tin oxide (IZTO), aluminum zinc oxide (AZO), indium tin oxide-silver Indium tin oxide (ITO-Ag-ITO), indium zinc oxide-silver-indium zinc oxide (IZO-Ag-IZO), indium zinc oxide-silver-indium zinc tin oxide (IZTO-Ag-IZTO) and aluminum zinc A method of manufacturing a dye-sensitized solar cell sealed to improve long-term stability, characterized in that formed of a transparent conductive oxide selected from the group consisting of oxide-silver-aluminum zinc oxide (AZO-Ag-AZO). The method of claim 1, The transparent substrate is a glass substrate or a transparent plastic substrate, characterized in that the manufacturing method of the dye-sensitized solar cell sealed to improve long-term stability. The method of claim 1, After forming the glass frit rim layer on the transparent substrate in steps 1 and 2 Method of manufacturing a dye-sensitized solar cell sealed to improve the long-term stability, characterized in that the heat treatment process at 300 ~ 500 ℃. The method of claim 1, The nano oxide layer adsorbed with the dye formed inside the glass frit edge layer formed on the substrate in step 1 is formed by applying a coating composition containing titanium dioxide to form a nano oxide layer and then adsorbing the dye Method of manufacturing a dye-sensitized solar cell sealed to improve the long-term stability. The method of claim 1, The method of manufacturing a dye-sensitized solar cell sealed to improve the long-term stability, characterized in that the metal layer formed inside the glass frit rim layer on the transparent substrate in step 2 is a platinum layer. The method of claim 1, The method of manufacturing a dye-sensitized solar cell sealed to improve long-term stability, characterized in that the glass frit rim layer formed on the transparent substrate in the step 1 and step 2 is formed in the same size and shape to be bonded to each other. The method of claim 1, The adhesive polymer layer formed on the glass frit rim layer on the transparent substrate in step 3 is 1 to 10 ㎛ thickness characterized in that the long-term stability of the dye-sensitized solar cell manufacturing method characterized in that the improved stability. The method of claim 1, The adhesive polymer layer is a method of manufacturing a dye-sensitized solar cell sealed to improve long-term stability, characterized in that formed by ionomer resin or thermosetting epoxy resin made by crosslinking metal ions to ethylene methacrylic acid copolymer . Preparing a cathode electrode after forming a glass frit edge layer on the transparent substrate on which the transparent conductive oxide layer is formed (step a); Manufacturing a bipolar electrode after forming a glass frit edge layer on the transparent substrate on which the transparent conductive oxide layer is formed (step b); And Opposing the cathode electrode prepared in step a and the anode electrode prepared in step b, and then sealing by bonding the two electrodes by forming an adhesive polymer layer on the glass frit edge layer on both electrodes (step Method for sealing a dye-sensitized solar cell comprising c). The method of claim 11, After forming the glass frit edge layer on the transparent substrate in steps a and b Sealing method of a dye-sensitized solar cell, characterized in that the heat treatment step at 300 ~ 500 ℃. The method of claim 11, The method of sealing a dye-sensitized solar cell, characterized in that the adhesive polymer layer formed on the glass frit edge layer on the transparent substrate in step c is formed to a thickness of 1 to 10 ㎛. The method of claim 11, The adhesive polymer layer is a sealing method of a dye-sensitized solar cell, characterized in that formed of an ionomer resin or a thermosetting epoxy resin made by crosslinking a metal ion to the ethylene methacrylic acid copolymer. The method of claim 11, The method of sealing a dye-sensitized solar cell, characterized in that the glass frit rim layer formed on the transparent substrate in the step a and step b are formed in the same size and shape so as to be bonded to each other. A cathodic electrode; A dye-sensitized solar cell comprising a sealing portion located at an edge of a positive electrode and a positive electrode, The sealing part is formed of an adhesive polymer layer interposed between the glass frit rim layer formed on the cathode electrode and the anode electrode and the glass frit rim layer of both electrodes, and has a structure in which both electrodes are coupled by the sealing part. Dye-Sensitized Solar Cell. The method of claim 16, Dye-sensitized solar cell, characterized in that the adhesive polymer layer formed between the glass frit edge layer is formed to a thickness of 1 to 10 ㎛. The method of claim 16, The adhesive polymer layer is a dye-sensitized solar cell, characterized in that formed by ionomer resin (Ionomer) resin or thermosetting epoxy resin made by crosslinking metal ions to ethylene methacrylic acid copolymer.

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