KR101088676B1 - Electrolyte for dye-sensitized solarcell comprising pyrrolidinium iodide based ionic liquid, dye-sensitized solarcell comprising the electrolyte and preparation method of the dye-sensitized solarcell - Google Patents

Abstract

The present invention relates to an electrolyte solution for a dye-sensitized solar cell, a dye-sensitized solar cell and a method for manufacturing the dye-sensitized solar cell including the same. The electrolyte solution for dye-sensitized solar cells of the present invention, an organic solvent; Redox derivatives; Pyrrolidinium iodide ionic liquids; And t-butylpyridine as an additive. The present invention is an organic solvent; Redox derivatives; Pyrrolidinium iodide ionic liquids; And by providing a dye-sensitized solar cell comprising an electrolyte solution for a dye-sensitized solar cell containing t-butylpyridine as an additive can improve the photoelectric conversion efficiency improved compared to the conventional dye-sensitized solar cell.

Dye-sensitized, solar cell, electrolyte solution, pyrrolidinium iodide ionic liquid, additive, photoelectric conversion efficiency

Description

ELECTROLYTE FOR DYE-SENSITIZED SOLARCELL COMPRISING PYRROLIDINIUM IODIDE BASED IONIC LIQUID, DYE-SENSITIZED SOLARCELL COMPRISING THE ELECTROLYTE AND PREPARATION METHOD OF THE DYE-SENSITIZED SOLARCELL}

The present invention relates to an electrolyte solution for a dye-sensitized solar cell with improved photoelectric conversion efficiency, a dye-sensitized solar cell and a method for manufacturing the dye-sensitized solar cell including the same.

Recently, various researches are being conducted to replace the existing fossil fuels to solve the energy problem. In particular, extensive research is being conducted to harness natural energy such as wind, nuclear power and solar power to replace petroleum resources that will be exhausted within decades. Unlike other energy sources, solar cells using solar energy have unlimited resources and are environmentally friendly. Therefore, since the development of Se solar cells in 1983, research has been continued and silicon solar cells have been in the spotlight recently.

However, such a silicon solar cell is difficult to commercialize because of the high manufacturing cost, and there are many difficulties in improving the battery efficiency. In order to overcome this problem, the development of dye-sensitized solar cells, which are significantly cheaper to manufacture, has been actively studied.

Dye-sensitized solar cells, developed in 1991 by Gratzel et al., Switzerland, are photosensitive dye molecules capable of absorbing visible light to produce electron-hole pairs, and nanocrystals that deliver the resulting electrons. A photoelectrochemical solar cell using an oxide semiconductor electrode made of oxidized titanium oxide particles, also called a dye-sensitized solar cell or a wet solar cell. Such a solar cell has a feature of having a photoelectric conversion efficiency that is simple in manufacturing process, low in manufacturing cost, and practically usable as compared with a silicon type solar cell, and many studies have been conducted on this.

1 is a cross-sectional view illustrating a general structure of a dye-sensitized solar cell. Referring to FIG. 1, a dye-sensitized solar cell includes a cathode electrode 100, an anode electrode 200, and a liquid electrolyte 300. The negative electrode 100 includes a transparent substrate 110 and a transparent conductive oxide layer (eg, fluorine-doped tin oxide (FTO) or indium tin oxide (ITO) 120 formed on the transparent substrate). A dye is adsorbed onto the porous nano oxide layer 130 on the conductive transparent substrate. The anode electrode 200 is formed of a platinum catalyst which serves to promote a reduction reaction of an electrolyte in a liquid electrolyte on a conductive transparent substrate including a transparent substrate 210 and a transparent conductive oxide layer 220 formed on the transparent substrate. It has a structure consisting of the formed platinum layer 230. The liquid electrolyte 300 is generally a solution in which an electrolyte is dissolved, and is placed in the thermoplastic polymer layer 400 placed to form a space between the anode electrode 100 and the anode electrode 200, and thus both electrodes are disposed. And electrochemically.

In the dye-sensitized solar cell, the photoelectric conversion process is irradiated light energy is absorbed by the dye of the cathode electrode 100, the dye is activated to generate holes and electrons. The generated electrons are transferred back to the transparent conductive oxide layer 120 through the nano oxide layer 130, and move to the circuit connected to the anode electrode 200 through a circuit connected to the transparent conductive oxide layer 120. It is delivered to the liquid electrolyte 300 again through the anode-based electrode 200. On the other hand, the holes generated with the electrons are passed through the liquid electrolyte 300 is made of a process of recombining with the electrons returned through the anode-based electrode (200).

Such dye-sensitized solar cells have the advantage of being cheaper to manufacture than conventional silicon solar cells and applicable to glass windows or glass greenhouses due to transparent electrodes, but have limited photoelectric conversion efficiency. to be.

Since the photoelectric conversion efficiency of the solar cell is proportional to the amount of electrons generated by the absorption of sunlight, in order to increase the efficiency, the production of electrons may be increased by increasing the absorption of sunlight or increasing the amount of dye adsorption, or The generated exciton may be prevented from disappearing by cell-hole recombination.

In order to increase the amount of dye adsorption per unit area, the particles of oxide semiconductor should be manufactured in nanometer size, and the method of manufacturing by increasing the reflectance of platinum electrode or mixing several micro-sized semiconductor oxide light scatterers to increase the absorption of sunlight. Etc. have been developed. However, such a conventional method has a limitation in improving the photoelectric conversion efficiency of the solar cell, and thus, there is an urgent demand for the development of a new technology for improving the efficiency.

In order to solve the problems of the prior art as described above, the present invention is an electrolyte solution for a dye-sensitized solar cell that can improve the photoelectric conversion efficiency by adding a pyrrolidinium iodide-based ionic liquid in place of the conventional imidazolium iodine liquid To provide a dye-sensitized solar cell and a dye-sensitized solar cell comprising the same.

In order to achieve the above object, the present inventors have made intensive studies and confirmed that the electrolyte solution containing t-butylpyridine as an ionic liquid and pyrrolidinium iodide-based ionic liquid and an additive shows excellent photoelectric conversion efficiency. The present invention has been completed.

The present invention, an organic solvent; Redox derivatives; Pyrrolidinium iodide-based ionic liquids; And it provides an electrolyte solution for dye-sensitized solar cells comprising t-butylpyridine as an additive.

Examples of the pyrrolidinium iodide-based ionic liquid include 1-butyl-1-methylpyrrolidinium iodide; One selected from the group consisting of 1-methyl-1-propylpyrrolidinium iodide and 1-ethyl-1-methylpyrrolidinium iodide can be used.

The present invention also provides a dye-sensitized solar cell, comprising: (A) a transparent substrate, a transparent conductive oxide layer formed on the transparent substrate, and a nano oxide layer formed on top of the transparent conductive oxide layer, to which dye is adsorbed. A cathode electrode; (B) an anode electrode comprising a transparent substrate, a transparent conductive oxide layer formed on the transparent substrate, and a platinum layer formed on the transparent conductive oxide layer, and (C) between the cathode and anode electrodes. Published organic solvents; Redox derivatives; Pyrrolidinium iodide ionic liquids; And it provides a dye-sensitized solar cell comprising an electrolyte solution containing t-butylpyridine as an additive.

The present invention also provides a method for manufacturing a dye-sensitized solar cell, the first step of manufacturing a cathode electrode; A second step of manufacturing an anode electrode; And an organic solvent between the cathode electrode and the anode electrode after bonding the cathode electrode or the anode electrode; Redox derivatives; It provides a method for manufacturing a dye-sensitized solar cell comprising a third step of injecting an electrolyte solution electrolyte solution containing pyrrolidinium iodide-based ionic liquid and t-butylpyridine as an additive.

According to the dye-sensitized solar cell of the present invention, the dye-sensitized solar cell and the dye-sensitized solar cell manufacturing method comprising the same, it has an improved photoelectric conversion efficiency compared to the conventional dye-sensitized solar cell. Accordingly, it is expected to be applicable to various fields such as building exterior glass windows or glass greenhouses.

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

The present invention, an organic solvent; Redox derivatives; Pyrrolidinium iodide ionic liquids; And it provides an electrolyte solution for dye-sensitized solar cells comprising t-butylpyridine as an additive.

As the organic solvent, ethylene carbonate, propylene carbonate, dimethyl carbonate, diethyl carbonate, ethyl methyl carbonate, tetrahydrofuran, gamma-butyrolactone, 3-methoxypropionitrile, a mixed solution thereof, and the like may be used. It doesn't happen.

As the redox derivative, a normal redox system electrolyte composed of a halogen group anion such as iodine or bromine and a counter metal cation can be used. Iodine as the redox derivative; And one mixture selected from the group consisting of lithium iodide, sodium iodide, potassium iodide, lithium bromide, sodium bromide, potassium bromide, quaternary ammonium salts, imidazolium salts and pyridinium salts, and the like, and the like. It is not.

As the pyrrolidinium iodide-based ionic liquid, 1-butyl-1-methylpyrrolidinium iodide represented by the following Chemical Formula 1 (1-Butyl-1-methylpyrrolidinium iodide; BMPyI); 1-methyl-1-propylpyrrolidinium iodide represented by Formula 2 (1-Methyl-1-propylpyrrolidinium iodide; MPPyI); It is preferable to use 1-ethyl-1-methylpyrrolidinium iodide (1-Ethyl-1-methylpyrrolidinium iodide; EMPyI) and the like represented by the following formula (3), and 1-ethyl-1-methylpyrrolidi It is more preferable to use nium iodide:

[Formula 1]

[Formula 2]

(3)

.

.

The electrolyte solution of the present invention can greatly improve the photoelectric conversion efficiency by simultaneously containing t-butylpyridine as the above-mentioned pyrrolidinium iodide-based ionic liquid and an additive.

In one embodiment of the present invention, the electrolyte solution is 0.04 to 0.06 M iodine and 0.05 to 0.15 M lithium iodide, sodium iodide, potassium iodide, lithium bromide, sodium bromide, potassium bromide, quaternary ammonium salt, and the like with respect to the organic solvent. Oxidation-reduction derivatives mixed with one selected from the group consisting of dazolium salts and pyridinium salts, 0.5-0.7 M pyrrolidinium iodide-based ionic liquids and additives to be prepared by mixing 0.4-0.6 M t-butylpyridine Can be.

When the oxidation-reducing derivative and pyrrolidinium iodide based ionic liquid are included in the preparation of an electrolyte solution for a dye-sensitized solar cell according to the present invention, the ionic conductivity may be reduced, and t-butylpyridine as an additive may be used. When included outside the range, the photoelectric conversion efficiency of the dye-sensitized solar cell using the electrolyte solution for a dye-sensitized solar cell according to the present invention may be reduced.

Next, the dye-sensitized solar cell of the present invention will be described.

As shown in FIG. 1, the dye-sensitized solar cell of the present invention includes (A) an anode electrode 100, (B) an anode electrode 200, and (C) between the cathode electrode and the anode electrode. The electrolyte solution 300 is included.

(A) The cathode electrode 100 includes a transparent substrate 110; A transparent conductive oxide layer 120 formed on the transparent substrate; And a nano oxide layer formed on the transparent conductive oxide layer and having a dye adsorbed thereon.

The transparent substrate 110 is polyethersulfone, polyacrylate, polyetherimide, polyethylene naphthalate, polyethylene terephthalate, polyphenylene sulfide, polyarylate, polyimide, polycarbonate, cellulose triacetate and cellulose acetate propio It may be a plastic material or a glass material containing at least one selected from the group consisting of nates.

The transparent conductive oxide layer 120 is a layer formed from fluorine-doped indium tin oxide (FTO) or indium tin oxide (ITO).

The nano oxide layer 130 is formed from a composition containing at least one metal oxide selected from the group consisting of titanium dioxide (TiO ₂ ), tin dioxide (SnO ₂ ), and zinc oxide (SnO), in which dye is adsorbed. Layer. The nano oxide layer 130 preferably has a thickness of 5 to 30 μm.

The dye may be adsorbed using a solution containing a ruthenium complex or an organic dye. As dyes, ruthenium complexes, including ruthenium complexes, which can absorb visible light, and any dyes capable of improving long-wavelength absorption in visible light to improve efficiency and efficient electron emission can be used. to be. Specifically, xanthine-based dyes such as rhodamine B, rosebengal, eosin, erythrosin and the like; Cyanine-based dyes such as quinocyanine and cryptocyanine; Basic dyes such as phenosafranin, cabrioblue, thiocin and methylene blue; Porphyrin-based compounds such as chlorophyll, zinc porphyrin, and magnesium porphyrin; Other azo dyes; Phthalocyanine compounds; Anthraquinone dyes; Or polycyclic quinone dye etc. can be used individually or in mixture of 2 or more types.

(B) the anode electrode 200 includes a transparent substrate 210; A transparent conductive oxide layer 220 formed on the transparent substrate; And a platinum layer 230 formed on the transparent conductive oxide layer.

The transparent substrate 210 and the transparent conductive oxide layer 220 are the same as those mentioned in the cathode electrode, and the platinum layer 230 is a layer formed from a platinum catalyst that serves to promote a reduction reaction of the electrolyte.

(C) the electrolyte solution 300 is disposed between the cathode electrode 100 and the anode electrode 200, and an organic solvent; Redox derivatives; Pyrrolidinium iodide ionic liquids; And t-butylpyridine as an additive.

The electrolyte solution 300 is prepared in the same manner as described above for the electrolyte solution for dye-sensitized solar cells of the present invention.

As described above, the dye-sensitized solar cell of the present invention including the negative electrode 100, the positive electrode 200, and the electrolyte solution 300 includes a nano oxide layer on which the dye of the negative electrode 100 is adsorbed. 130 and the platinum layer 230 of the anode electrode 200 are disposed to face each other, and an electrolyte solution 300 is disposed between the cathode electrode 100 and the anode electrode 200. Has a structure. Such a dye-sensitized solar cell of the present invention was confirmed to improve the photoelectric conversion efficiency by using an electrolyte solution containing t-butylpyridine as the pyrrolidinium iodide-based ionic liquid and additives as described above.

Next, the manufacturing method of the dye-sensitized solar cell of this invention is demonstrated.

Method for producing a dye-sensitized solar cell according to the present invention comprises the first step of manufacturing a negative electrode; A second step of manufacturing an anode electrode; An organic solvent between the cathode electrode and the anode electrode after bonding the cathode electrode or the anode electrode; Redox derivatives; Pyrrolidinium iodide ionic liquids; And a third step of injecting an electrolyte solution containing t-butylpyridine as an additive.

Hereinafter, although the manufacturing method of the dye-sensitized solar cell of this invention is demonstrated in detail, this invention is not limited only to the following description.

The first step of manufacturing a cathode-based electrode includes the steps of preparing a transparent substrate; Forming a transparent conductive oxide layer on the prepared transparent substrate; Forming a nano oxide layer by applying a composition including a metal oxide on top of the formed transparent conductive oxide layer; And adsorbing the dye by applying a solution in which the dye is dissolved in the formed nano oxide layer. Specifically, first, after preparing a transparent substrate, indium tin oxide or indium tin oxide doped with fluorine, which is a transparent conductive oxide, is adhered to the upper portion of the transparent substrate by using an adhesive or by coating a coating film by sputtering to form a transparent conductive oxide. A layer can be formed. Next, in order to form a nano oxide layer, after preparing a coating composition comprising at least one metal oxide selected from the group consisting of titanium dioxide (TiO ₂ ), tin dioxide (SnO ₂ ) and zinc oxide (SnO), The coating composition may be applied to the upper portion of the formed transparent conductive metal layer by a doctor blade method, and thermally treated at a temperature of 400 to 500 ° C. for 10 to 60 minutes to form a nano oxide layer having a thickness of 5 to 30 μm. In this case, the step of forming the nano oxide layer may be repeated one or more times to form a nano oxide layer having a desired thickness. Next, in order to adsorb the dye to the metal oxide of the formed nano oxide layer, the dye is dissolved in a solvent to prepare a dye solution having a concentration of 0.01 to 5 μM, and then the substrate on which the nano oxide layer is formed is 5 to 5. The dye may be adsorbed by drying for 72 hours and then drying.

The second step of manufacturing the bipolar electrode includes the steps of preparing a transparent substrate; Forming a transparent conductive oxide layer on the prepared transparent substrate; And forming a platinum layer on the formed transparent conductive oxide layer. Specifically, first, after preparing a transparent substrate, indium tin oxide or indium tin oxide doped with fluorine, which is a transparent conductive oxide, is adhered to the upper portion of the transparent substrate by using an adhesive or by coating a coating film by sputtering to form a transparent conductive oxide. A layer can be formed. Next, after the solution in which the platinum is dissolved on the upper portion of the transparent conductive oxide layer is dropped, the platinum layer may be formed by heat treatment at 400 to 600 ° C. for 10 to 60 minutes. In this case, the platinum layer may be formed using a sputtering method, a chemical vapor deposition method, a vapor deposition method, a thermal oxidation method, an electrochemical deposition method and the like.

The third step of injecting an electrolyte solution may include bonding an anode electrode or an anode electrode, and then using an organic solvent between the cathode electrode and the anode electrode; Redox derivatives; Pyrrolidinium iodide ionic liquids; And injecting an electrolyte solution containing t-butylpyridine as an additive. Specifically, the surface of the first electrode and the second electrode are bonded to each other using an adhesive, and then a micro hole through the first electrode and the second electrode is formed, and the electrolyte solution is injected into the space between the two electrodes through the hole. Then, the outside of the hole is again sealed with an adhesive. As the adhesive, a thermoplastic polymer film may be used, for example, the trade name SURLYN (manufactured by Du Pont). The thermoplastic polymer film is positioned between the two electrodes and then sealed by heat compression.

The electrolyte solution is prepared in the same manner as described above for the electrolyte solution for dye-sensitized solar cells of the present invention.

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

(1) 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 transparent conductive oxide layer of 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 about 8 ㎛ A thick nano 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. A 0.2 mM ruthenium dithiocyanate 2,2'-bipyridyl-4,4'-dicarboxylate dye solution was prepared. The substrate having the nano oxide layer formed thereon was supported for 24 hours and then dried to adsorb a dye to the nano-sized metal oxide to prepare a cathode electrode.

(2) A transparent glass substrate on which a fluorine-doped tin oxide transparent conductive oxide layer was formed was prepared. A 2-propanol solution in which chloroplatinic acid (H ₂ PtCl ₆ ) was dissolved was dropped on the transparent conductive oxide layer of the substrate, and then thermally treated at 450 ° C. for 30 minutes to form a platinum layer, thereby preparing an anode-based electrode.

(3) After the nano-oxide layer of the prepared cathode electrode and the platinum layer of the anode electrode face each other, a thermoplastic polymer layer having a thickness of about 60 µm made of SURLYN (manufactured by Du Pont) is formed, and then 130 ° C. It was put in the oven of and maintained for 2 minutes to attach the two electrodes were sealed. Next, fine holes penetrating the cathode electrode and the anode electrode were formed, an electrolyte solution was injected into the space between the two electrodes through the hole, and then the outside of the hole was sealed with an adhesive.

Here, the electrolyte solution is a mixture of 0.1M lithium iodide and 0.05M iodine as an oxidation-reducing derivative in a 3-methoxypropionitrile solvent, 0.5M 4-tert-butylpyridine and pyrrole iodide as an additive. It was prepared by dissolving 0.6 M 1-ethyl-1-methylpyrrolidinium iodide, which is a dinium-based ionic liquid.

Example  2

The preparation was carried out in the same manner as in Example 1, except that 0.6M 1-methyl-1-propylpyrrolidinium iodide was used as the ionic liquid in preparing the electrolyte solution.

Example  3

The preparation of the electrolyte solution was carried out in the same manner as in Example 1, except that 0.6M 1-butyl-1-methylpyrrolidinium iodide was used as the ionic liquid.

Comparative example  One

In the preparation of the electrolyte solution, the same method as in Example 1 except for the use of 1,2-dimethyl-3-propyl aidazolium iodide (1,2-Dimethyl-3-propylimidazolium iodide) as the ionic liquid Was carried out.

Test Example

In order to evaluate the photoelectric conversion efficiency of the dye-sensitized solar cells manufactured in the above Examples and Comparative Examples, the photovoltaic characteristics were observed by measuring the photovoltage and the photocurrent as follows, and the current density (I _sc ) obtained therefrom, Photoelectric conversion efficiency (η _e ) was calculated by Equation 1 using the voltage V _oc and the fill factor ff.

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 × I _sc × ff) / (P _ine )

In Equation 1, (P _ine ) represents 100 ㎽ / ㎠ (1 sun).

The values measured as above are shown in Table 1 below.

division Current density (㎃ / cm ² ) Voltage (V) Fill factor Photoelectric conversion efficiency (%) Example 1 16.060 715.475 0.618 7.098 Example 2 14.712 706.936 0.641 6.668 Example 3 14.645 713.870 0.632 6.602 Comparative Example 1 14.294 680.059 0.603 5.864

As shown in Table 1, the dye-sensitized solar cell including the electrolyte solution prepared using the pyrrolidinium iodide-based ionic liquid of Examples 1 to 3 according to the present invention is imidazolium iodide ionic It was confirmed that the photoelectric conversion efficiency was improved compared to the dye-sensitized solar cell including the electrolyte solution prepared using the liquid.

In addition, it can be seen that the dye-sensitized solar cell of Example 1 using 1-ethyl-1-methylpyrrolidinium iodide as the pyrrolidinium iodide-based ionic liquid exhibits the best photoelectric conversion efficiency.

1 is a cross-sectional view showing a general structure of a dye-sensitized solar cell.

2 is a graph showing the photoelectric conversion efficiency of the dye-sensitized solar cells manufactured in Examples 1 to 3 and Comparative Example 1 in detail.

Explanation of symbols on the main parts of the drawings

100: cathode electrode 110, 210: transparent substrate

120,220: transparent conductive oxide layer 130: nano oxide layer

200: anode electrode 230: platinum layer

300: liquid electrolyte 400: thermoplastic polymer layer

Claims (19)

Organic solvents; Redox derivatives; 1-butyl-1-methylpyrrolidinium iodide, 1-methyl-1-propylpyrrolidinium iodide (1-Methyl-1-propylpyrrolidinium iodide; MPPyI) and 1-ethyl-1-methylpy Pyrrolidinium iodide-based ionic liquids selected from the group consisting of lollydinium iodide; And An electrolyte solution for dye-sensitized solar cells comprising t-butylpyridine as an additive. The method of claim 1, The organic solvent is one or two or more selected from the group consisting of ethylene carbonate, propylene carbonate, dimethyl carbonate, diethyl carbonate, ethyl methyl carbonate, tetrahydrofuran, 3-methoxypropionnitrile and gamma-butyrolactone. An electrolyte solution for dye-sensitized solar cells, characterized in that the solution. The method of claim 1, The redox derivative is iodine; And at least one mixture selected from the group consisting of lithium iodide, sodium iodide, potassium iodide, lithium bromide, sodium bromide, potassium bromide, quaternary ammonium salts, imidazolium salts and pyridinium salts. Electrolyte solution. The method of claim 1, The electrolyte solution for dye-sensitized solar cells, characterized in that the pyrrolidinium iodide-based ionic liquid is an ionic liquid containing 1-butyl-1-methylpyrrolidinium iodide represented by the following formula (1): [Formula 1]

. The method of claim 1, The electrolyte solution for dye-sensitized solar cells, characterized in that the pyrrolidinium iodide-based ionic liquid is an ionic liquid containing 1-methyl-1-propylpyrrolidinium iodide represented by the following formula (2): [Formula 2]

. The method of claim 1, The electrolyte solution for dye-sensitized solar cells, characterized in that the pyrrolidinium iodide-based ionic liquid is an ionic liquid containing 1-ethyl-1-methylpyrrolidinium iodide represented by the following formula (3): (3)

. The method of claim 1, The electrolyte solution is composed of 0.04 to 0.06 M iodine and 0.05 to 0.15 M lithium iodide, sodium iodide, potassium iodide, lithium bromide, sodium bromide, potassium bromide, quaternary ammonium salt, imidazolium salt and pyridinium salt with respect to the organic solvent. Dye-sensitized solar cell, characterized in that it is prepared by mixing 0.4-0.6M t-butylpyridine as a redox derivative, 0.5-0.7M pyrrolidinium iodide-based ionic liquid and additive mixed with one selected from the group. Electrolyte solution. As a dye-sensitized solar cell, (A) a transparent substrate; A transparent conductive oxide layer formed on the transparent substrate; And a cathode electrode formed on the transparent conductive oxide layer and including a nano oxide layer to which dye is adsorbed; (B) a transparent substrate; A transparent conductive oxide layer formed on the transparent substrate; And a platinum layer formed on the transparent conductive oxide layer. And (C) an organic solvent disposed between the cathode and the anode; Redox derivatives; 1-butyl-1-methylpyrrolidinium iodide, 1-methyl-1-propylpyrrolidinium iodide (1-Methyl-1-propylpyrrolidinium iodide; MPPyI) and 1-ethyl-1-methylpy Pyrrolidinium iodide-based ionic liquids selected from the group consisting of lollydinium iodide; And an electrolyte solution containing t-butylpyridine as an additive. The method of claim 8, The organic solvent is one or two or more selected from the group consisting of ethylene carbonate, propylene carbonate, dimethyl carbonate, diethyl carbonate, ethyl methyl carbonate, tetrahydrofuran, 3-methoxypropionnitrile and gamma-butyrolactone. Dye-sensitized solar cell, characterized in that the solution. The method of claim 8, The redox derivative is iodine; And one mixture selected from the group consisting of lithium iodide, sodium iodide, potassium iodide, lithium bromide, sodium bromide, potassium bromide, quaternary ammonium salts, imidazolium salts and pyridinium salts. delete The method of claim 8, The pyrrolidinium iodide-based ionic liquid is a dye-sensitized solar cell, characterized in that 1-ethyl-1-methylpyrrolidinium iodide. The method of claim 8, The electrolyte solution is composed of 0.04 to 0.06 M iodine and 0.05 to 0.15 M lithium iodide, sodium iodide, potassium iodide, lithium bromide, sodium bromide, potassium bromide, quaternary ammonium salt, imidazolium salt and pyridinium salt with respect to the organic solvent. Dye-sensitized solar cell, characterized in that it is prepared by mixing 0.4-0.6M t-butylpyridine as a redox derivative, 0.5-0.7M pyrrolidinium iodide-based ionic liquid and additive mixed with one selected from the group. . As a manufacturing method of a dye-sensitized solar cell, A first step of manufacturing a cathode electrode; A second step of manufacturing an anode electrode; An organic solvent between the cathode electrode and the anode electrode after bonding the cathode electrode or the anode electrode; Redox derivatives; 1-butyl-1-methylpyrrolidinium iodide, 1-methyl-1-propylpyrrolidinium iodide (1-Methyl-1-propylpyrrolidinium iodide; MPPyI) and 1-ethyl-1-methylpy Pyrrolidinium iodide-based ionic liquids selected from the group consisting of lollydinium iodide; And a third step of injecting an electrolyte solution containing t-butylpyridine as an additive. The method of claim 14, The organic solvent is one or two or more selected from the group consisting of ethylene carbonate, propylene carbonate, dimethyl carbonate, diethyl carbonate, ethyl methyl carbonate, tetrahydrofuran, 3-methoxypropionnitrile and gamma-butyrolactone. Method for producing a dye-sensitized solar cell, characterized in that the solution. The method of claim 14, The redox derivative is iodine; And one mixture selected from the group consisting of lithium iodide, sodium iodide, potassium iodide, lithium bromide, sodium bromide, potassium bromide, quaternary ammonium salts, imidazolium salts and pyridinium salts. Manufacturing method. delete The method of claim 14, The pyrrolidinium iodide-based ionic liquid is a 1-ethyl-1-methylpyrrolidinium iodide manufacturing method of a dye-sensitized solar cell, characterized in that. The method of claim 14, The electrolyte solution is composed of 0.04 to 0.06 M iodine and 0.05 to 0.15 M lithium iodide, sodium iodide, potassium iodide, lithium bromide, sodium bromide, potassium bromide, quaternary ammonium salt, imidazolium salt and pyridinium salt with respect to the organic solvent. A dye-sensitized solar cell, which is prepared by mixing 0.4-0.6 M t-butylpyridine as a redox derivative, 0.5-0.7 M pyridinium iodide-based ionic liquid, and an additive mixed with one selected from the group. Manufacturing method.

Images