KR101092555B1 - Device for applying solution for Dye-Sensitized Solar Cell and Method for Controlling the Same - Google Patents

Abstract

The present invention relates to a dye-sensitized solar cell solution coating apparatus and a method of controlling the same, wherein productivity is improved and application of a solution is more uniform. According to one embodiment of the present invention, a substrate coated with a transparent electrode is seated and fixed. A shelf provided on the stage, the shelf having a solution applied to a substrate fixed to the stage, and having a slit formed at a predetermined interval in a plurality of rows on a bottom thereof so that the solution is supplied to the surface of the substrate, and the Dye-sensitized solar cell solution coating apparatus comprising a dispenser for pushing the solution to the slit side so that the solution contained in the shelf is supplied to the lower substrate through the slit.

Solar cell, dye-sensitized, titanium oxide solution

Description

Device for applying solution for dye-sensitized solar cell and its control method {Device for applying solution for Dye-Sensitized Solar Cell and Method for Controlling the Same}

The present invention relates to a dye-sensitized solar cell solution coating apparatus and a control method thereof, and more particularly, to a dye-sensitized solar cell solution coating apparatus and a control method of which productivity is improved and application of a solution is more uniform. .

Global environmental problems and energy problems such as warming and air pollution caused by mass consumption of fossil fuels, which are emerging as an important issue in modern times, are considered to be the most important tasks of humanity in the 21st century.

The solar cell proposed as an alternative to the above-mentioned solar cell is directly available to any place on earth because it converts clean and infinite solar energy into the form of electricity, the most efficient energy, and is expected to be the most fundamental solution of energy and environment. .

In general, a solar cell is a photovoltaic cell manufactured for converting solar energy into electrical energy, and uses photovoltaic power generated by photoelectric effect when light is irradiated to a contact surface of a metal and a semiconductor or a PN junction of a semiconductor. The battery is largely classified into inorganic solar cells made of inorganic materials such as silicon and compound semiconductors and organic solar cells containing organic materials. The organic solar cells are largely dye-sensitized solar cells and organic polymers. It is divided into solar cells.

Currently, solar cells generally used as photovoltaic power generation systems are mostly made of silicon semiconductors. In particular, single crystal and polycrystalline solar cells of silicon semiconductor crystal systems are widely used because of high conversion efficiency and high reliability of products. There is a problem that the productivity is low, so the need for the development of alternative solar cells has emerged.

Thus, as part of the development efforts, dye-sensitized solar cells have recently been developed.

The dye-sensitized solar cell is reproduced on the principle that the transparent glass coated with a special dye, such as photosynthesis action of the plant to convert light energy into electrical energy, wherever there is light, it is possible to produce electricity regardless of indoor or outdoor.

The dye-sensitized solar cell has a different composition from that of a silicon solar cell, and its main material is a photosensitive dye molecule capable of absorbing visible light to generate an electron-hole pair and transferring the generated electrons. It is a photoelectrochemical solar cell mainly composed of transition metal oxides, and thus has a low manufacturing cost per power compared to a conventional silicon solar cell, and thus has been in the spotlight as an alternative to the conventional solar cell.

In the general dye-sensitized solar cell, as shown in FIG. 1, the first glass 10 and the second glass 20 are disposed to face each other, and the transparent conductive layers 32 and 34 are disposed on the surfaces of the surfaces facing each other. ) Is formed. The transparent conductive layers 32 and 34 are coated with FTO (F-doped SnO 2) or ITO (Indium Tin Oxide), and dye-adsorbed titanium dioxide (TiO ₂ ) is disposed between the transparent conductive layers 32 and 34. The semiconductor electrode layer 40, the electrolyte layer 60, and the counter electrode layer 50 made of platinum are provided.

On the other hand, the dye-sensitized solar cell as described above has recently been applied to a variety of applications, such as being applied to the glass window, etc., accordingly, it is required to increase the production speed.

Therefore, there is a need for production equipment for performing each process of the dye-sensitized solar cell.

The present invention is to solve the above problems, the present invention is to provide a dye-sensitized solar cell solution coating apparatus for applying a titanium oxide solution to form a semiconductor electrode layer on the substrate during the production process of the dye-sensitized solar cell. It is a task.

In order to solve the above problems, according to one embodiment of the present invention, a substrate on which a substrate coated with a transparent electrode is seated and fixed, is provided on the upper side of the stage, the solution is applied to the substrate fixed to the stage And a shelf having a plurality of rows of slits formed at predetermined intervals on a bottom surface thereof so that the contained solution is supplied to the surface of the substrate, and pushing the solution toward the slit side so that the solution contained in the shelf is supplied to the lower substrate through the slits. Dye-sensitized solar cell solution coating device comprising a dispenser is provided.

The stage may include a table on which a substrate is mounted and fixed, a first vertical moving part for moving the table in a vertical direction, and a first horizontal moving part for moving the table in a horizontal direction.

The first vertical moving unit may include a base having a first inclined surface inclined at a predetermined angle with respect to a horizontal plane, and a slider which is vertically moved while sliding on the first inclined surface of the base.

The shelf includes a holding part containing a solution and a plurality of slits formed at predetermined intervals at positions spaced apart from the holding part in a direction in which the solution is pushed by the dispenser so that the solution contained in the holding part is supplied to the substrate. It can be done by.

The dispenser may include a spatula for pushing the solution contained in the holding part toward the slit side.

In addition, the spatula may have a width corresponding to a width in which a plurality of slits are formed, and may be moved in the longitudinal direction of the slits.

In addition, the dispenser may include a second horizontal transfer unit for transferring the spatula in a horizontal direction and a second vertical transfer unit for transferring the spatula in a vertical direction.

The solution may be a titanium oxide solution.

On the other hand, according to another aspect of the present invention, the carrying-in step of bringing the substrate into the stage, the working position transfer step to be transferred to the position where the carried-in substrate is the solution is applied, the solution is applied to the substrate transferred to the working position Provided is a control method for a dye-sensitized solar cell solution coating device comprising a coating step and a conveying position conveying step in which a substrate coated with a solution is conveyed to a conveying position.

The loading step may include a substrate seating step in which a substrate is placed on a table, and a substrate adsorption step in which a substrate placed on the table is adsorbed and fixed.

The work position transfer step may include a horizontal transfer step in which the table on which the substrate is placed is horizontally transferred to the lower side of the shelf, and a vertical transfer step in which the table is raised so that the substrate touches the bottom of the shelf.

The coating step may include a solution injection step of injecting a solution into the shelf, and a squeezing step of pushing the solution by the spatula so that the solution is supplied to the substrate through the slit.

According to the dye-sensitized solar cell solution coating apparatus and the control method of the present invention has the following effects.

First, since the application of the solution is made by the automated equipment, the speed of the solution application process is faster, there is an effect that the productivity is improved.

Second, since the solution is applied through the slit of the spatula and the shelf there is an effect that can be more uniform thickness of the solution is applied.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In describing the present embodiment, the same designations and the same reference numerals are used for the same components, and further description thereof will be omitted.

As shown in FIG. 2, the dye-sensitized solar cell solution coating apparatus 100 according to an embodiment of the present invention may include a stage 110, a shelf 120, and a dispenser 130.

As illustrated in FIGS. 2 and 3, the stage 110 may include a table 112, a first vertical transfer unit 116, and a first horizontal transfer unit 118.

The table 112 has either a first glass 10 (see FIG. 1) or a second glass 20 (see FIG. 1) of a dye-sensitized solar cell (hereinafter, referred to as a substrate) 10. It is a component that is seated and fixed. In addition, the table 112 may be provided with an adsorption unit (not shown) for fixing the substrate 10.

The first vertical transfer part 116 may include a slider 113 and an upper 115.

The slider 113 is provided to be movable horizontally, and is provided to form a horizontal surface or a first inclined surface 114 inclined with the table 112.

The upper 115 is provided above the first inclined plane 114 of the slider 113, and moves relative to the slider 113 along the first inclined plane 114 when the slider 113 is horizontally moved. While being raised and lowered is provided. In addition, the upper part of the upper 115 is provided with the table 112 such that the table 112 is raised or lowered by raising and lowering the upper 115.

In addition, the first horizontal transfer unit 118 is configured to transfer the first vertical transfer unit 116 and the table 112 in a horizontal direction. The first horizontal transfer unit 118 may be configured to transfer the first vertical transfer unit 116 and the table 112 between the lower and lower points of the shelf 120 to be described later.

The shelf 120 is located above the stage 110, as shown in FIG. 4. Then, a cloud is formed so that the solution can be contained, the solution is made to be applied to the substrate 10.

Here, the solution may be any one of various solutions applied and coated on the substrate 10. In the present embodiment, a description will be given of a titanium oxide solution (for example, TiO 2 or the like) forming a semiconductor electrode on the substrate 10 as an example.

The shelf 120 as described above may include a holding part 122 and a slit 124.

The holding part 122 is a part in which the solution temporarily contains. That is, the solution injected into the shelf 120 by another device or worker is a part that temporarily stays.

In addition, the slits 124 are formed in a plurality of rows at predetermined intervals so as to have a longitudinal direction in one direction at a position spaced apart from the holding portion 122 by a predetermined interval. At this time, the thickness of the bottom surface of the shelf 120 on which the slit 124 is formed is preferably made to be uniform.

Therefore, the solution temporarily contained in the holding part 122 is applied to the lower substrate 10 through the slit 124 by the dispenser 130 to be described later.

As shown in FIGS. 4 and 5, the dispenser 130 may include a spatula 132, a second vertical transfer part 136, and a second horizontal transfer part 134.

The spatula 132 is a component for pushing the solution of the holding part 122 toward the slit 124. In addition, the spatula 132 is provided so that the slit 124 has a width corresponding to the width formed in a plurality of rows, it is made to have an end made of a soft material such as rubber so as to be in close contact with the bottom surface of the shelf (120). Can be.

The second vertical transfer part 136 is a component that selectively moves the spatula 132 vertically so that the spatula 132 touches or falls on the bottom surface of the shelf 120.

In addition, the second horizontal transfer part 134 is a component for transferring the spatula 132 in a horizontal direction so that the spatula 132 pushes the solution contained in the holding part 122 to the slit 124 side. . At this time, the direction in which the spatula 132 is transferred by the second horizontal transfer unit 134 is preferably a longitudinal direction of the slit 124.

In addition, the dispenser 130 may be provided on the shelf 120, as shown in FIGS. 4 and 5, and although not illustrated, a solution injection for injecting a solution into the shelf 120 is provided. A part (not shown) may be further provided. The solution injector may include a tank for storing a solution (not shown), and a nozzle (not shown) for supplying a solution of the tank to the holding part 122 of the shelf 120.

On the other hand, it will be described below the control method of the dye-sensitized solar cell solution coating apparatus 100.

As shown in FIG. 6, a method of controlling the dye-sensitized solar cell solution coating apparatus 100 according to the present embodiment, a substrate loading step (S10), a work position transfer step (S20), a coating step (S30), and a transfer method It comprises a position transfer step (S40).

As shown in FIG. 7, the substrate loading step S10 is a step in which the substrate 10 is loaded and seated on the stage 110.

As described above, the substrate loading step S10 may include a substrate seating step S110 and a substrate adsorption step S120 as shown in FIG. 6.

The substrate mounting step S110 is a step in which the substrate 10 is seated on the table 112 of the stage 110. In addition, the substrate adsorption step (S120) is a step in which the adsorption unit (not shown) is operated to fix the substrate 10 to the table 112 by a negative pressure.

The work position transfer step (S20) is a step in which the substrate 10 fixed to the table 112 is transferred to a position where the application of the solution is performed, and the first horizontal transfer step (S130) and the first vertical transfer step ( S140) can be made.

As shown in FIG. 8, in the first horizontal transfer step S130, the first horizontal transfer unit 118 of the first stage 110 operates to operate the table 112 and the first vertical transfer unit 116. It is a step of transferring the horizontal so as to be located on the lower side of the shelf (120).

In the first vertical transfer step (S140), as shown in FIG. 9, the table 112 is raised so that the substrate 10 seated on the table 112 contacts the bottom surface of the shelf 120. Step. When the slider 113 of the first vertical transfer unit 116 is transferred to one side, the upper of the table 112 is moved upward by riding on the first inclined surface 114 of the slider 113. It is done.

The application step (S30) is a step of applying a solution to the substrate 10, as shown in Figure 10 to 13, it may be made including a solution injection step (S150) and a squeezing step.

Solution injection step (S150) is a step in which a solution is injected into the holding part 122 of the shelf 120. Therefore, the solution is injected into the shelf 120 in the solution injection step (S150) is temporarily contained in the holding part 122.

The squeegeeing step is a step in which the solution contained in the holding part 122 is pushed through the spatula 132 and applied to the substrate 10 through the slit 124, and the spatula lowering step (S160) and spatter It comprises a tula horizontal transfer step (S170).

As shown in FIGS. 10 and 11, the spatula descending step S160 is performed such that the second vertical transfer part 136 is operated so that the end of the spatula 132 contacts the shelf 120. It's a step. At this time, the part where the spatula 132 contacts the shelf 120 is preferably a holding part 122 of the shelf 120.

The spatula transfer step S170 is a step of horizontally transferring the spatula 132 by operating the second horizontal transfer unit 134 as shown in FIGS. 12 and 13. The solution F of the holding part 122 is applied to the substrate 10 through the slit 124 while being pushed toward the slit 124 by the spatula 132.

At this time, since the thickness of the shelf 120 in which the slit 124 is formed is uniform, and the spatula 132 is in close contact with the shelf 120 to push the solution, the solution F has a uniform thickness. ) May be applied.

Thereafter, the spatula 132 moves horizontally in the opposite direction to the spatula conveying step S170 and then rises so that the spatula distal step S180 in which the spatula 132 is conveyed to its original position can be performed. There is also.

After the application of the solution to the substrate 10 is completed, the transfer position transfer step (S40) for transferring the substrate 10 to a position that can be transported so that the substrate 10 can be transferred to the outside may be performed. .

The conveying position conveying step (S40) may comprise a table lowering step (S190) and the stage home position step (S200).

The table lowering step (S190) is a step in which the table 112, which was raised in the first vertical transfer step (S140), is lowered and the substrate 10 is spaced apart from the shelf 120. At this time, the lowering of the table 112 may be made by moving the slider 113 and the upper 115 in a direction opposite to the above-described direction.

The stage home position step (S200) is the first horizontal portion is transferred in the opposite direction than when the first horizontal transfer step (S130) so that the table 112 is transferred to the outside of the shelf 120, the substrate loading step ( S10) is transferred to the position.

As shown in FIG. 14 and FIG. 15, the completed substrate 10 has a form in which the solution F is applied to one side of the substrate 10 at predetermined intervals, and the substrate 10 having the application of the solution is completed. ) Is later returned to the process. (S210)

As described above, the preferred embodiments of the present invention have been described, and the fact that the present invention can be embodied in other specific forms in addition to the above-described embodiments without departing from the spirit or scope thereof has ordinary skill in the art. It is obvious to them. Therefore, the above-described embodiments should be regarded as illustrative rather than restrictive, and thus, the present invention is not limited to the above description and may be modified within the scope of the appended claims and their equivalents.

1 is a cross-sectional view showing a cross section of a general dye-sensitized solar cell;

2 is a cross-sectional view showing a solution coating device for a dye-sensitized solar cell of the present invention;

3 is an enlarged perspective view of the stage part of FIG. 2;

4 is an enlarged perspective view of a shelf and a dispenser of FIG. 2;

5 is a perspective view of the rear bottom of the shelf of FIG. 4;

Figure 6 is a flow chart showing a control method of the dye-sensitized solar cell solution coating apparatus of the present invention;

7 is a side view showing a solution coating device for a dye-sensitized solar cell at the time of loading a substrate;

8 is a side view showing a solution coating device for a dye-sensitized solar cell in the first horizontal transfer step;

9 is a side view showing a solution coating device for a dye-sensitized solar cell in the first vertical transfer step;

10 is a side view showing a solution coating device for a dye-sensitized solar cell when the spatula descending step;

FIG. 11 is an enlarged cross-sectional view of the shelf part of FIG. 10; FIG.

12 is a side view showing a solution coating device for a dye-sensitized solar cell during the spatula transfer step;

FIG. 13 is an enlarged cross-sectional view of the shelf part of FIG. 12; FIG.

14 is a side view of a substrate on which a solution is applied;

15 is a perspective view of a substrate on which application of a solution is completed;

Description of the Related Art [0002]

10: substrate 100: solution coating device for dye-sensitized solar cell

110: stage 112: table

113: slider 114: first inclined plane

115: upper 116: first vertical transfer unit

118: first horizontal transfer unit 120: shelf

122: holding part 124: slit

130: dispenser 132: spatula

134: second horizontal transfer unit 136: second vertical transfer unit

S10: substrate loading step S20: work position transfer step

S30: coating step S40: conveying position transfer step

S110: substrate mounting step S120: substrate adsorption step

S130: first horizontal transfer step S140: first vertical transfer step

S150: solution injection step S160: spatula descending step

S170: spatula transfer step S180: spatula home position step

S190: table descending step S200: stage home position step

S210: substrate transfer step

Claims (12)

A table on which a substrate coated with a transparent electrode is mounted and fixed, a first horizontal transfer part for moving the table in a horizontal direction, a slider having a first inclined surface inclined at a predetermined angle with respect to a horizontal plane, and an upper portion of the first inclined surface of the slider A stage including an upper vertical moving part which includes an upper which moves upward or downward while moving relative to the slider along the first inclined plane of the slider and moves the table in a vertical direction; A shelf provided on an upper side of the stage and containing a solution applied to a substrate fixed to the stage, the slits being formed at predetermined intervals in a plurality of rows on a bottom thereof so that the solution is supplied to the surface of the substrate; A dispenser for pushing the solution to the slit side such that the solution contained in the shelf is supplied to the lower substrate through the slit; Dye-sensitized solar cell solution coating device comprising a. delete delete The method of claim 1, The shelf, A holding portion containing a solution; A plurality of slits formed at predetermined intervals at positions spaced apart from the holding portion in a direction in which the solution is pushed by the dispenser so that the solution contained in the holding portion is supplied to the substrate; Dye-sensitized solar cell solution coating apparatus comprising a. 5. The method of claim 4, The dispenser, Dye-sensitized solar cell solution coating apparatus comprising a spatula for pushing the solution contained in the holding portion to the slit side. The method of claim 5, The spatula Dye-sensitized solar cell solution coating apparatus characterized in that the slit has a width corresponding to the width formed in a plurality of rows, the slit is moved in the longitudinal direction of the slit. The method of claim 5, The dispenser, A second horizontal moving part for transferring the spatula in a horizontal direction; A second vertical transfer part for transferring the spatula in a vertical direction; Dye-sensitized solar cell solution coating apparatus comprising a. The method of claim 1, The dye-sensitized solar cell solution coating device, characterized in that the solution is a titanium oxide solution. An import step of bringing a substrate into the stage; The horizontal transfer step in which the table on which the substrate is placed is moved horizontally to the lower side of the shelf by moving the first horizontal transfer part of the first stage and the upper of the first vertical transfer part are moved on the first inclined surface of the slider so that the substrate is moved to the bottom of the shelf. And a vertical transfer step in which the table is raised so as to reach the working position, wherein the transferred work position is transferred to a position where a solution is applied; An application step of applying a solution to the substrate transferred to the working position; A conveying position conveying step of conveying the substrate coated with the solution to the conveying position; Dye-sensitized solar cell solution coating apparatus control method comprising a. 10. The method of claim 9, The import step, A substrate seating step of placing a substrate on a table; A substrate adsorption step of adsorbing and fixing a substrate placed on a table; Dye-sensitized solar cell solution coating apparatus control method comprising a. delete 10. The method of claim 9, The application step, Solution injection step of injecting the solution into the shelf; Squeezing the spatula to push the solution so that the solution is supplied to the substrate through the slit; Dye-sensitized solar cell solution coating apparatus control method comprising a.

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