KR101295916B1 - Apparatus for manufacturing dye solution and adsorbing by dye, and method for manufacturing of semiconductor electrode for dye-sensitized solar cell using the same - Google Patents

Abstract

Dye solution preparation and dye adsorption apparatus, and the manufacturing method of the dye-sensitized solar cell semiconductor electrode using this are disclosed.
The dye solution production and dye adsorption apparatus according to the present invention includes a dye tank having an opening and closing unit for entering and receiving the object, the dye solution containing the dye solution and the object to be immersed in the dye solution; An ultrasonic apparatus for applying ultrasonic waves when the dye solution is prepared; A stirrer for stirring the prepared dye solution; A temperature sensor for measuring the temperature of the dye solution during stirring; A controller for controlling the temperature of the ultrasonic wave, the dye solution, and process conditions during stirring; A gas injection tube and a raw material injection tube for respectively injecting a gas and a raw material of the dye solution into the dye tank; And an exhaust pipe exhausting the dye solution from which the adsorption is completed from the dye tank.

Description

Dye solution preparation and dye adsorption apparatus, and method for manufacturing semiconductor electrode for dye-sensitized solar cell using same.

The present invention relates to a dye-sensitized solar cell, and more particularly, to a dye solution production and dye adsorption apparatus, and a method for manufacturing a semiconductor electrode for dye-sensitized solar cell using the same.

Dye-sensitized solar cells have recently attracted attention due to the advantages that the manufacturing process is simpler than conventional silicon solar cells, the economy is excellent, and can be generated by visible light. In addition, since the dye-sensitized solar cell has a property that light can pass through, it can be installed in a window of a car or a building, and its application range is very wide.

The unit cell structure of a general dye-sensitized solar cell is based on a conductive transparent electrode made of a transparent conductive oxide (TCO) formed on the upper and lower transparent substrates and the surface of the transparent substrate, respectively, and the first electrode (action On the conductive transparent electrode of one side corresponding to the pole), a transition metal oxide porous layer on which the dye is adsorbed is formed, and on the other conductive transparent electrode corresponding to the second electrode (catalyst), the catalyst thin film electrode (mainly Pt ) Is formed, and the transition metal oxide, for example, TiO ₂ , has a structure in which an electrolyte is filled between the porous electrode and the catalyst thin film electrode.

In the dye adsorption process of a dye-sensitized solar cell having such a structure, after preparing a dye solution, a predetermined amount of the dye solution is removed and injected into the adsorption chamber, and then the substrate on which the transition metal oxide porous layer is formed is subjected to This was done by soaking for about 18-24 hours.

However, such a dye adsorption method has a problem that decreases the productivity of the solar cell to the process that takes the longest time when manufacturing a dye-sensitized solar cell.

Related prior arts are Korean Patent Publication No. 10-2010-0079379 (2010. 07. 08. publication), the document is a dye tank in a certain amount of dye in the cylinder after pressing the dye in the cylinder to the injection port Disclosed is a technique for injecting a dye into a solar cell or submodule through a piston unit and discharging it. There is no bar.

One object of the present invention is to integrate the dye solution manufacturing and dye adsorption process, the dye solution is easy to manufacture the dye solution, the dye adsorption time can be shortened, cost reduction due to the dye solution reuse cost reduction effect To provide a manufacturing and dye adsorption apparatus.

In addition, another object of the present invention is to provide a method for producing a semiconductor electrode for dye-sensitized solar cells that can ensure process improvement and efficiency reproducibility using the dye solution preparation and dye adsorption apparatus according to the present invention.

Dye solution production and dye adsorption apparatus according to the present invention for achieving the above object is provided with a opening and closing portion for entering and receiving the object, a dye tank for receiving the dye solution and the object to be immersed in the dye solution; An ultrasonic apparatus for applying ultrasonic waves when the dye solution is prepared; A stirrer for stirring the prepared dye solution; A temperature sensor for measuring the temperature of the dye solution during stirring; A controller for controlling the temperature of the ultrasonic wave, the dye solution, and process conditions during stirring; A gas injection tube and a raw material injection tube for respectively injecting a gas and a raw material of the dye solution into the dye tank; And an exhaust pipe exhausting the dye solution from which the adsorption is completed from the dye tank.

The dye solution preparation and dye adsorption apparatus according to the present invention and the manufacturing method of the semiconductor electrode for dye-sensitized solar cells using the same have the following effects.

First, the process can be improved through the integration of the dye solution preparation and dye adsorption process.

Second, the dye solution is easily prepared by applying ultrasonic waves to improve the solubility of the organometallic dye.

Third, it is possible to improve the productivity of the dye-sensitized solar cell by shortening the dye adsorption time by providing activation energy for efficient dye adsorption through stirring and temperature control to the prepared dye solution.

Fourth, it is possible to reduce the production cost by reusing the dye solution passed through the filter.

Fifth, it is easy to manufacture a large-area dye-sensitized solar cell module can be introduced jig (jig) to fit the module size.

Sixth, efficiency reproducibility of the dye-sensitized solar cell can be secured.

1 is a cross-sectional view schematically showing a dye solution production and dye adsorption apparatus for producing a dye-sensitized solar cell according to the present invention.
2 is a flowchart illustrating a method of manufacturing a semiconductor electrode for dye-sensitized solar cell according to an embodiment using FIG. 1.

Hereinafter, a dye solution preparation and a dye adsorption apparatus according to the present invention will be described with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish them, will become apparent by reference to the embodiments described in detail below with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms, and only the present embodiments are intended to complete the disclosure of the present invention, and the general knowledge in the art to which the present invention pertains. It is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is defined only by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

1 is a cross-sectional view schematically showing a dye solution production and dye adsorption apparatus for producing a dye-sensitized solar cell according to the present invention.

Referring to FIG. 1, the dye solution preparation and dye adsorption apparatus 100 for manufacturing a dye-sensitized solar cell (DSSC) according to the present invention is A dye tank 110 for receiving the dye solution 105 and the object to be processed 109, an ultrasonic device 120 for applying ultrasonic waves in the preparation of the dye solution 105, and a stirrer for stirring the prepared dye solution 105. 140, the temperature sensor 130 for measuring the temperature of the dye solution 105 during stirring, the gas injection tube 150 for injecting gas into the dye tank 110, the ultrasonic wave, the temperature and stirring of the dye solution It may be configured to include a controller 160 for controlling the process conditions of the city and the exhaust pipe 170 for exhausting the dye solution of the adsorption is completed from the dye tank 110.

In addition, the transfer for transferring the jig (107) in the form of a plate on which one or more raw material injection tubes (155) for injecting the raw material of the dye solution (105) and the object to be processed (109) are mounted to the dye tank (110). It may comprise a device (not shown). In addition, it is mounted inside the exhaust pipe 170, it may be configured to further include a removable filter 175.

The dye tank 110 manufactures and stores a dye solution 105 for manufacturing a dye-sensitized solar cell, and receives a workpiece 109 fixed to a jig 107 and immersed in the dye solution 105. . According to the present invention, the workpiece 109 is a substrate on which a porous semiconductor oxide layer (for example, TiO ₂ ) is formed.

The size of the dye tank 110 may be such that the large area of the dye-sensitized solar cell module can be mounted horizontally, for example, may be 30cm X 30cm.

The dye tank 110 may include an opening and closing portion 112 for entering and exiting the target object 109 for dye adsorption. The opening and closing part 112 may be provided at an upper portion of the dye tank 110. For example, the opening and closing portion 112 may be coupled to the wall portion 114 of the dye tank 110 may be provided in the form of a cover. This dye tank 110 has a sealed structure.

The dye tank 110 is coated with Teflon (Teflon) to minimize the reaction with the organic solvent Stainless steel (SUS) material can be used.

Inside the dye tank 110 By checking the amount that the dye solution 105 is filled In order to facilitate the manufacture of the dye solution 105, a scale of 5 L per unit may be displayed.

Here, the dye solution 105 is a dye dispersed and mixed in a solvent capable of generating excitation electrons by sunlight. As the dye, an organometallic dye may be used. As a solvent for dispersing the dye, an organic solvent may be used. For example, acetonitrile, dichloromethane, an alcohol solvent, or the like may be used.

The jig 107 can fix the object 109 therein by making a hole in a plate-shaped member. The dye solution manufacturing and dye adsorption apparatus 100 enables the introduction of the jig 107 suitable for the size of the dye-sensitized solar cell module, thereby facilitating the fabrication of a large-area dye-sensitized solar cell module.

The ultrasonic apparatus 120 is provided in the dye tank 110 and is a component for improving solubility of an organic metal dye in an organic solvent by applying ultrasonic waves during the manufacture of the dye solution 105. For this purpose, the ultrasound apparatus 120 may use a frequency of 10 to 40kHz. If the ultrasonic frequency is less than 10 kHz, solubility may not be sufficient. On the other hand, if the ultrasonic frequency exceeds 40 kHz, there is a possibility that the dye is destroyed.

The temperature sensor 130 may be in a form attached to the dye tank 110 and measures the temperature of the dye solution 105. Through temperature measurement, it becomes possible to control the temperature advantageous for adsorption.

The stirrer 140 provides activation energy for efficient dye adsorption so that the dye particles can be adsorbed to the object 109 well during the dye adsorption process.

For example, the stirrer 140 may use a propeller type or a stand type stirrer. The stirrer 140 may be provided in a form fixed to the opening and closing portion 112, that is, the cover of the dye tank 110.

The gas injection pipe 150 injects nitrogen into the dye tank 110 to block moisture and oxygen in the dye tank 110. The exhaust pipe 170 is a component for the disposal of the dye solution 105 is completed adsorption. The detachable filter 175 mounted inside the exhaust pipe 170 removes particles and foreign matter having a size of 100 nm from the dye solution 105. The dye solution 105 that has passed through the filter 175 is reusable.

The controller 160 is for controlling process conditions such as ultrasonic wave, temperature of the dye solution 105, stirring, and the like, and can be analog or digital controlled.

The controller 160 may further include a display for monitoring, or may be in the form of a touch screen in which the display and the controller are integrated.

The controller 160 may control the temperature of the dye solution 105 to 0 to 80 ° C. through the temperature sensor 130 to provide activation energy for efficient dye adsorption to optimize the adsorption conditions of the organometallic dye. . In this case, when the temperature of the dye solution 105 is less than 0 ° C., activation energy for dye adsorption may not be provided. On the other hand, when the temperature of the dye solution 105 exceeds 80 ° C, the solvent may be volatilized to lower the solution stability.

The dye solution preparation and dye adsorption device 100 may set the adsorption time of the dye through the controller 160, and may automatically turn off the agitation and temperature sensor 130 after the set time. For example, the adsorption time of the dye can be set to 99:59 using a timer.

The dye solution preparation and dye adsorption apparatus 100 may proceed with the dye solution 105 preparation and dye adsorption process in the same dye tank 110.

2 is a flowchart illustrating a method of manufacturing a semiconductor electrode for dye-sensitized solar cell according to an embodiment using FIG. 1. In the following Figure 1 While describing the process of manufacturing the semiconductor electrode using the dye solution manufacturing and dye adsorption apparatus 100 shown in the drawing, the working principle of the dye solution preparation and dye adsorption apparatus 100 will be described together.

1 and 2, the dye solution 105 is manufactured in the dye tank 110 of the dye solution preparation and dye adsorption apparatus 100 (S10).

First, a dye and a solvent are introduced into the dye tank 110. In this case, the solvent is introduced into the dye tank 110 through the raw material injection pipe 155 using a solvent supply device (not shown), and the dye is supplied through the raw material injection pipe 155 using a dye supply device (not shown). Dye may be introduced into the tank 110.

As the dye, an organometallic dye may be used. As a solvent for dispersing the dye, an organic solvent may be used. For example, acetonitrile, dichloromethane, an alcohol solvent, or the like may be used.

Thereafter, the ultrasonic apparatus 120 provided in the dye tank 110 is driven to apply ultrasonic waves at a frequency of 10 to 40 kHz to manufacture the dye solution 105. In this case, since the solubility of the organometallic dye in the organic solvent can be improved, the production of the dye solution 105 becomes easy.

In the above, the dye and the solvent are supplied through one raw material inlet tube 155, but differently, the one or more raw material inlet tubes 155 may be provided so that the dye and solvent inlet tubes may be different from each other.

When the dye and the solvent are added, it is possible to easily adjust the desired target amount by checking the main unit (5L) scale displayed inside the dye tank 110.

Then, the agitator 140 such as a propeller type or a stand type fixed to the opening / closing portion 112 of the dye tank 110 is driven to stir the dye solution 105.

While stirring is performed, the temperature of the dye solution 105 is measured using the temperature sensor 130 provided in the dye tank 110, and the dye solution is used to optimize the adsorption conditions of the organometallic dye by the controller 160. The temperature of 105 can be controlled to 0 to 80 ° C.

At this time, the activation energy for efficient dye adsorption may be provided to the dye solution 105 by stirring using the stirrer 140 and temperature control during the stirring.

The ultrasonic wave, the temperature of the dye solution, and the process conditions at the time of stirring can be controlled by the controller 160.

Subsequently, the jig 107 on which the substrate on which the semiconductor oxide layer (for example, TiO ₂ ) is formed is mounted is connected to the jig 107 through the opening and closing portion 112 using a dye solution production and a transfer device (not shown) of the dye adsorption device 100. Transfer to the inside of the dye tank 110 (S20). At this time, the object to be processed 109 is mounted on the jig 107 and immersed in the dye solution 105.

Here, since the substrate on which the semiconductor oxide layer is formed is the same as the object 109 of FIG. 1, the substrate 109 will be described below.

The object 109 can be manufactured using conventionally known materials and methods. For example, the substrate can be made of glass, polymer or metal. For example, the semiconductor oxide layer may be formed of one or more oxide semiconductor particles among metal oxides including transition metal oxides, and may be preferably formed of anatase titanium dioxide (TiO ₂ ) to improve light efficiency. Can be.

For example, the semiconductor oxide layer may be formed by screen printing, doctor blading of an oxide semiconductor particle paste including titanium dioxide (TiO ₂ ) having nanoparticles having an average particle diameter of 5 to 30 nm on a substrate. It is applied to a thickness of about 100 to 200㎛ using a doctor blading method, spray coating method and the like, and then heat treated for 20 to 60 minutes at a temperature of about 100 to 500 ℃ thickness of about 10 to 30㎛ It can be formed as.

The substrate is a transparent electrode coated with a transparent conductive material such as ITO (Indium Tin Oxide) or FTO (Fluorine doped Tin Oxide) on the surface in contact with the semiconductor oxide layer by screen printing, doctor blading, spray coating, etc. It may include.

After the object 109 is transferred into the dye tank 110, the dye tank is provided through the gas injection pipe 150 using a gas supply device (not shown) to block moisture and oxygen in the dye tank 110. Nitrogen may be injected into 110.

Then, the dye is adsorbed to the object 109 immersed in the dye solution 105 in the dye tank 110 (S30).

As a result, a dye is adsorbed on the surface of the object 109, that is, the semiconductor oxide layer, thereby completing a semiconductor electrode for dye-sensitized solar cell.

Since the dye solution 105 contains the activation energy provided through the stirring process and the temperature control of the dye solution 105 during stirring, the time for adsorbing the dye to the object 109 is about 4 to 5 hours. Can be shortened effectively.

The dye solution preparation and dye adsorption apparatus 100 may set the adsorption time of the dye through the controller 160, for example, 99:59, and after the set time, the stirring and temperature sensor 130 Can be turned off automatically.

The dye solution 105 having completed adsorption may be disposed of through the exhaust pipe 170. However, when the filter 175 is installed inside the exhaust pipe 170, particles and foreign matter having a size of 100 nm may be removed from the dye solution 105 through the filter 175. 105) can be reused. Accordingly, it is possible to reduce the production cost due to the reuse of the dye solution 105.

As such, the dye solution preparation and dye adsorption apparatus 100 according to the present invention is organic in the organic metal dye through the ultrasonic application using the ultrasonic device 120 provided therein at the time of manufacturing the dye solution 105 in the dye tank 110 Since the solubility in the solvent is improved, the preparation of the dye solution 105 is easy.

In addition, the prepared dye solution 105 is stirred and controlled at a target temperature to provide activation energy for efficient dye adsorption, thereby shortening the dye adsorption time, thereby improving productivity of the dye-sensitized solar cell. Since the dye solution preparation and the dye adsorption process are performed in the same dye tank 110, process improvement is also possible.

In addition, since the dye adsorption process can be performed by quantifying the amount of the dye solution 105, efficiency reproducibility of the dye-sensitized solar cell can be ensured.

Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. These changes and modifications may be made without departing from the scope of the present invention. Accordingly, the scope of the present invention should be determined by the following claims.

100: dye adsorption device 105: dye solution
107: jig 109: the object to be processed
110: dye tank 112: opening and closing part
114: wall portion 120: ultrasonic device
130: temperature sensor 140: agitator
150: gas injection pipe 155: raw material injection pipe
160: controller 170: exhaust pipe
175 filter

Claims (10)

A dye tank having an opening / closing part for inputting and receiving a target object, and containing a dye solution and a target object immersed in the dye solution;
An ultrasonic apparatus for applying ultrasonic waves when the dye solution is prepared;
A stirrer for stirring the prepared dye solution;
A temperature sensor for measuring the temperature of the dye solution during stirring;
A controller for controlling the temperature of the ultrasonic wave, the dye solution, and process conditions during stirring;
A gas injection tube and a raw material injection tube for respectively injecting a gas and a raw material of the dye solution into the dye tank;
An exhaust pipe for exhausting the dye solution from which the adsorption is completed from the dye tank; And
Dye solution manufacturing and dye adsorption apparatus comprising a; is mounted inside the exhaust pipe, detachable filter.
The method of claim 1,
The controller
Dye solution production and dye adsorption device, characterized in that for controlling the temperature of the dye solution to 0 to 80 ℃.
The method of claim 1,
The ultrasonic device is
Dye solution preparation and dye adsorption device, characterized in that using a frequency of 10 to 40kHz.
The method of claim 1,
The controller
Dye solution preparation and dye adsorption device further comprising a display.
delete The method of claim 1,
The controller
A dye solution preparation and dye adsorption device, characterized in that for setting the adsorption time of the dye, after the set time has passed the stirring and temperature sensor automatically.
The method of claim 1,
A dye solution production and dye adsorption device, characterized in that the target object is fixed to a jig and immersed in the dye solution by a transfer device.
The method of claim 1,
Inside the dye tank Dye solution preparation and dye adsorption apparatus, characterized in that the scale of 5L per week is displayed.
The method of claim 1,
The dye tank
Teflon Coated Dye solution production and dye adsorption device, characterized in that the stainless steel material.
In the dye solution manufacture of any one of Claims 1-4, 6-9, and the manufacturing method of the semiconductor electrode for dye-sensitized solar cells using the dye adsorption apparatus,
Preparing a dye solution by adding a dye and a solvent in a dye tank;
Transferring the substrate on which the semiconductor oxide layer is formed to a dye tank; And
Adsorbing a dye on a surface of the semiconductor oxide layer in the dye tank; a manufacturing method of a semiconductor electrode for a dye-sensitized solar cell comprising a.

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