KR20210007213A - Perovskite solar cell module and its encapsulation method - Google Patents

Abstract

The present invention relates to a Perovskite solar cell module and an encapsulation method thereof, wherein the Perovskite solar cell module is encapsulated through PIB and a dehumidifying agent. The Perovskite solar cell module configured by laminating a lower plate, a lower electrode, an electron transfer layer, Perovskite, a positive hole transfer layer, an upper electrode and an upper plate, comprises: the Perovskite coated on the upper of the electron transfer layer; and an encapsulation layer formed to cover the positive hole transfer layer formed on the upper part of the Perovskite and containing a dehumidifying agent to block the Perovskite from moisture, wherein the encapsulation layer is formed by liquefying a solid state PIB sealant with a solvent, mixing the liquefied PIB sealant with the dehumidifying agent, and applying heat to the mixture at a predetermined temperature to remove the solvent. The present invention improves an anti-permeability problem of the Perovskite solar cell, and prevents, in advance, intrusion of moisture due to lowering of PIB density caused by volume increase when temperature rises to increase a life span and enhance reliability of the Perovskite solar cell by laminating/coating the encapsulation layer, resulted from mixing liquefied PIB with zeolite having a dehumidifying function, on the upper part of the Perovskite to form a structure that prevents Perovskite from being exposed to moisture but forms guides fit-coupled to the upper/the lower part plate and side portions of the encapsulation layer.

Description

Perovskite solar cell module and its encapsulation method}

The present invention relates to an encapsulation of a perovskite solar cell and a method of manufacturing the same, and more particularly, a PIB and a dehumidifying agent having a structure that prevents moisture from penetrating due to a lower PIB density due to an increase in volume when the temperature rises. It relates to a perovskite solar cell module encapsulated through and an encapsulation method thereof.

Solar cells using sunlight are devices that convert light energy into electrical energy using the photovoltaic effect, and silicon solar cells are typical, and dye-sensitized solar cells with low manufacturing costs have recently been studied. .

A dye-sensitized solar cell is an electrochemical solar cell driven by adsorbing a dye, which is a light absorbing layer, to a porous metal oxide on one electrode to which light enters, bonding the other electrode to face each other, and charging an electrolyte therebetween.

On the other hand, in the case of solar cells using perovskite dye as the light absorbing layer, compared to silicon solar cells in terms of price and ease of processing, there is a disadvantage that perovskite is vulnerable to moisture, so research to solve this problem Is necessary.

Accordingly, the applicant of the present invention improved the moisture permeability problem of perovskite solar cells by mixing zeolite having a dehumidifying function in the liquefied PIB, and by inserting a guide that seals the side of the encapsulation layer, PIB due to volume increase when the temperature rises. We propose a method of encapsulation of perovskite solar cell modules encapsulated through PIB and dehumidifying agent that prevent moisture from penetrating due to low density.

Republic of Korea Patent Publication No. 10-2017-0060366 (published on January 1, 2017)

An object of the present invention is to improve the reliability of a perovskite solar cell by mixing a zeolite having a dehumidifying function in a liquefied PIB to improve the moisture permeability problem of a perovskite solar cell.

An object of the present invention is to prevent moisture from penetrating due to lowering the PIB density of the encapsulation layer due to an increase in volume when the temperature rises by configuring a guide that is fitted to the upper/lower plate and the side of the encapsulation layer.

An embodiment of the present invention for achieving this technical problem is a perovskite solar cell module, in which a lower plate, a lower electrode, an electron transport layer, a perovskite layer, a hole transport layer, an upper electrode, and an upper plate are stacked. Doedoe consisting of, the perovskite coated on the top of the electron transport layer; And a perovskite and an encapsulation layer formed to cover the hole transport layer and the upper electrode formed on the perovskite, and to block the perovskite from moisture by including a dehumidifying agent, wherein the encapsulation layer It is formed by liquefying the PIB sealant in a solid state with a solvent, mixing a dehumidifying agent, and removing the solvent by applying heat at a preset temperature.

Preferably, the sealing layer is characterized in that formed to a thickness of 0.2mm to 0.4mm.

The perovskite solar cell is characterized in that it has a structure in which an encapsulation layer is laminated/applied on the upper electrode, further including an adhesive applied on the encapsulation layer.

The dehumidifying agent is characterized in that it is composed of any one of zeolite, silica gel, or molecular sieve.

The perovskite solar cell is fitted so as to surround both sides of the lower plate and the upper plate, and the PIB density of the encapsulation layer decreases due to the increase in volume due to temperature increase, thereby providing a guide that prevents moisture from penetrating into the perovskite. It characterized in that it further includes.

According to another aspect for achieving the above object, the present invention is encapsulated by PIB and a dehumidifying agent formed by stacking a lower plate, a lower electrode, an electron transport layer, a perovskite layer, a hole transport layer, an upper electrode, and an upper plate. A method for encapsulation of a perovskite solar cell module, comprising: (a) coating the perovskite on an electron transport layer; (B) forming an encapsulation layer containing a dehumidifying agent on the upper electrode, wherein the step (b) comprises: (b-1) liquefying the PIB sealant in a solid state; (B-2) mixing a dehumidifying agent; (B-3) removing the solvent through heating; And (b-4) forming a lower electrode, a hole blocking layer, an electron transport layer, a perovskite layer, a hole transport layer, and an encapsulation layer to surround the upper electrode.

Preferably, step (a) is characterized in that it is performed through any one of spin coating, spray coating, screen coating, slot die coating, or blade coating.

And, it characterized in that it further comprises (c) step of fitting the guide so as to surround the side of the lower plate and the upper plate after step (b).

According to the present invention as described above, by laminating/applying an encapsulation layer in which zeolite having a dehumidifying function is mixed with liquefied PIB on the upper electrode to form a structure in which perovskite does not come into contact with moisture, perovskite solar There is an effect of improving the lifespan and reliability of perovskite solar cells by improving the moisture permeability problem of the battery.

According to the present invention, by configuring a guide that is fitted to the upper/lower plate and the side of the encapsulation layer, the PIB density of the encapsulation layer decreases due to an increase in volume when the temperature rises, thereby preventing moisture from penetrating.

1 is a schematic configuration diagram of a perovskite solar cell module according to an embodiment of the present invention.
2 is a block diagram showing a guide of a perovskite solar cell module according to an embodiment of the present invention.
3 is a block diagram showing a side encapsulation of a perovskite solar cell module according to an embodiment of the present invention.
4 is a view showing a moisture resistance state over time when the encapsulation layer is made of a conventional material.
5 is a view showing the state of the solar cell according to time for each material content of the perovskite solar cell module encapsulated through PIB and a dehumidifying agent according to an embodiment of the present invention.
6 is a flow chart showing the flow of a method of manufacturing a perovskite solar cell encapsulated through PIB and a dehumidifying agent according to an embodiment of the present invention.
7 is a flow chart showing a step of forming an encapsulation layer in the flow of a method for manufacturing a perovskite solar cell encapsulated through PIB and a dehumidifying agent according to an embodiment of the present invention.
8 is a flow chart showing a step of fitting and coupling a guide during a flow of a method of manufacturing a perovskite solar cell encapsulated through a PIB and a dehumidifying agent according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily implement the embodiments of the present invention. However, the present invention may be implemented in various different forms and is not limited to the embodiments described herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and similar reference numerals are assigned to similar parts throughout the specification.

Referring to FIG. 1, a perovskite solar cell module 100 encapsulated through PIB and a dehumidifying agent according to an embodiment of the present invention includes a lower plate 110, a lower electrode 120, and an electron transfer layer 130. ), perovskite 140, hole transport layer 150, upper electrode 160, encapsulation layer 170, and upper plate 180 are stacked.

First, the lower plate 110 may be made of glass or other transparent material and may have a size of 5mm X 5mm to 32mm X 32mm.

In addition, the lower electrode 120 and the electron transport layer 130 are the same configurations used in the conventional perovskite solar cell, and the structure and effect are the same as those of the conventional perovskite solar cell. , Although it is not described in detail in the present specification, it should be sufficiently understood at the level of those skilled in the art.

In addition, the perovskite 140 is CH ₃ NH ₃ PbI ₃ , which is coated and deposited on the top of the electron transport layer 130, spin coating, spray coating, screen coating, slot die coating, or blade coating. It is applied on the top of the electron transport layer 130 by the coating of.

In addition, the hole transport layer 150 is formed on the perovskite 140 and is configured to transfer holes formed in the perovskite 150 to the electrode.

In addition, since the upper electrode 160 is formed on the hole transport layer 150 and is the same configuration implemented in a conventional perovskite solar cell, the structure and operation of the upper plate 180 are described in detail in this specification. Although not, it should be understood at the level of those skilled in the art.

In addition, the encapsulation layer 170 (Encapsulation) is formed to surround the lower electrode 120, the electron transport layer 130, the perovskite 140, the hole transport layer 150 and the upper electrode 160 With a sealant, the perovskite 140 is protected from moisture. In this case, the encapsulation layer 170 may be compressed in a vacuum or adhered to the upper plate 180 through an adhesive.

In addition, most of the layers including the encapsulation layer 170 may be coated with any one of spin coating, spray coating, screen coating, slot die coating, or blade coating.

At this time, the encapsulation layer 170 may be composed of any one of a dehumidifying agent among zeolite, silica gel, or molecular sieve, and the type and content of the dehumidifying agent are not limited.

Specifically, the encapsulation layer 170 of the perovskite solar cell module 100 encapsulated through PIB and a dehumidifying agent according to an embodiment of the present invention is formed by liquefying a polyisobutylene (PIB) sealant in a solid state with a solvent. After producing the PIB solution, it is prepared including a solution produced by mixing a predetermined ratio of a dehumidifying agent in the PIB solution, and the solvent in which the PIB is liquefied is removed through heating.

In this way, the encapsulation layer 170 coated to contain a dehumidifying agent surrounds the lower electrode 120, the electron transport layer 130, the perovskite 140, the hole transport layer 150, and the upper electrode 160. As it is laminated/applied, it is configured to block contact between the perovskite 140 and external moisture.

Preferably, the dehumidifying agent according to an embodiment of the present invention has stability even at a high temperature, and can easily desorb the adsorbed one through heat treatment and adsorb a new one again. It is composed of zeolite, which is used as a deodorant or absorbent because it can adsorb the molecules of, at this time, the pore size of the zeolite has a size of 0.3nm to 0.5nm.

In addition, the solvent for liquefying the PIB sealant in the solid state is a nonpolar one of benzene, chloroform, carbon tetrachloride, carbon disulfide, toluene, hexane, diethyl ether, diisopropyl ether, or 1,4-dioxane. In addition to the solvent, it may be a material in which PIB is dissolved including any one polar solvent among water, acetone, methanol, ethanol, isopropyl alcohol, dimethyl sulfoxide, or dimethylformamide, but is not limited thereto.

In addition, the solvent for dissolving the PIB sealant according to an embodiment of the present invention may be mixed in a ratio of 1:9 to 5:5 so that the PIB sealant may be dissolved in the solvent, but is not limited thereto.

In addition, the thickness of the encapsulation layer 170 is configured to be 1 mm or less, because when the thickness of the encapsulation layer 170 is thick, the probability of moisture penetration from the side surface increases. Therefore, it is preferable to form the entire thickness of the encapsulation layer 170 covering the perovskite 150 to 0.2mm to 0.4mm or less.

As the encapsulation layer 170 has a structure in which a dehumidifying agent is mixed with a PIB solution, it has better moisture permeability than epoxy or lamination used as an encapsulant in a conventional perovskite solar cell. There is an effect of overcoming the limitations of the lamination of the high-temperature process.

When the dehumidifying agent included in the solution forming the encapsulation layer 170 is zeolite, the mass of the zeolite is mixed between 20% and 60% based on the mass of PIB in the solution. That is, the mass occupied by the zeolite in the dried encapsulation layer 170 may be 20% to 60% of the mass of the PIB.

On the other hand, with reference to [Table 1] and [Table 2], the experimental results for the PIB thickness change according to the temperature and time are shown.

[Table 1]

[Table 2]

As can be seen from the experimental results of the PIB thickness change according to the temperature and time change in [Table 1] and [Table 2], the volume increases with increasing temperature and time, even if the PIB is formed with the highest density of 0.1mm or less in thickness. This can lead to a lower density, resulting in a breathable path.

Accordingly, the perovskite solar cell 100 encapsulated through the PIB and the dehumidifying agent according to an embodiment of the present invention, as shown in FIG. 2, is at both sides of the lower plate 110 and the upper plate 180 The guide 10 is configured to prevent moisture from penetrating into the perovskite 140 because the PIB density of the encapsulation layer 170 is lowered due to an increase in volume due to an increase in temperature due to an increase in volume due to an increase in temperature.

At this time, the guide 10 is composed of a plurality of guides to maintain a density of 0.1 mm or less in thickness, and the lower plate 110, the lower electrode 120, the electron transport layer 130, the perovskite 140, the hole transport layer 150, the upper electrode 160, the encapsulation layer 170, and the upper plate 180 are fitted to each of the stacked sides.

At this time, the dimensions of the guide 10 are the widths of the lower plate 110 and the upper plate 180, the lower plate 110, the lower electrode 120, the electron transport layer 130, and the perovskite 140 , The hole transport layer 150, the upper electrode 160, the encapsulation layer 170, and the upper plate 180 may be varied depending on the stacked height.

In addition, the perovskite solar cell 100 encapsulated through PIB and a dehumidifying agent according to an embodiment according to the present invention is an encapsulation layer 170 coated to contain a dehumidifying agent as shown in FIGS. 1 and 2 In addition to the configuration in which the lower electrode 120, the electron transport layer 130, the perovskite 140, the hole transport layer 150, and the upper electrode 160 are completely covered, as shown in FIG. 3 , The encapsulation layer 170 may be applied to the lower electrode 120, the electron transport layer 130, the perovskite 140, the hole transport layer 150, and the upper electrode 160.

In this way, the encapsulation layer 170 may be applied to the front surface as shown in FIGS. 1 and 2 or applied to the side as shown in FIG. 3 to change the design so as to be Side Encapsulation.

Hereinafter, a process of manufacturing the encapsulation layer 170 of the perovskite solar cell module 100 encapsulated through PIB and a dehumidifying agent according to an embodiment of the present invention is as follows.

First, a PIB solution is produced by mixing a solid PIB sealant with a solvent at a concentration of 30 wt%. At this time, the PIB solution is dissolved for 30 to 50 minutes using a shaker.

Then, zeolite is mixed with the liquefied PIB solution. At this time, the capacity of the zeolite is 30% to 50%, preferably 40%, based on the PIB sealant.

Subsequently, the solution is shaken and mixed for 3 to 10 minutes using a shaker to ensure that the zeolite is evenly dispersed in the PIB solution.

Subsequently, the PIB solution and zeolite dissolved in each other are stacked/applied to surround the lower electrode 120, the electron transport layer 130, the perovskite 140, the hole transport layer 150, and the upper electrode 160, or Laminated/applied in a form that covers the whole.

In addition, the solvent is removed by heating on the hot plate at 60 to 80 degrees, preferably at 70 degrees.

As such, the manufactured encapsulation layer 170 is stacked on the lower plate 110, and the upper plate is stacked on the upper plate.

In addition, the guide 10 is fitted so as to surround both sides of the lower plate 110 and the upper plate 180, and the PIB density of the encapsulation layer 170 decreases due to the increase in volume due to the increase in temperature, preventing moisture from penetrating. Will be prevented.

Hereinafter, the PIB quantification process of the perovskite solar cell module 100 encapsulated through PIB and a dehumidifying agent according to an embodiment of the present invention is as follows.

For example, in the case of a 12mm X 12mm standard, the PIB is 12mm X 12mm in which the lower electrode 120, the electron transport layer 130, the perovskite 140, the hole transport layer 150, and the upper electrode 160 are stacked. It is applied on the top of the standard lower plate 110.

At this time, the mixed density of PIB and the dehumidifying agent is 1.12g/m3, and the PIB sealant is dissolved in a solvent at a concentration of 30wt%, and then applied while mixing with zeolite.

Subsequently, when the PIB blade is working, a PIB solution of 2.2g to 2.4g, preferably 2.3g, at a height of 0.8mm is applied to the lower electrode 120, the electron transport layer 130, the perovskite 140, the hole transport layer ( 150) and the upper electrode 160 are stacked/applied to surround or are stacked/applied to surround the whole.

Subsequently, the solvent is removed by heating to 70 degrees. At this time, the heating is heated so that the laminated/applied PIB is 0.6g to 0.8g, preferably 0.7g, that is, only 30% of the pre-laminated/applied PIB remains.

At this time, the PIB is configured to form a thickness of 0.1mm by [Equation 1] and to have a strength of 7 MPa.

[Equation 1]

Weight of PIB and dehumidifier (0.7g) / (mix density of PIB and dehumidifier (1.12) X sealant area (55.64cm ² )) = 0.1mm

Meanwhile, FIGS. 4 and 5 are photographs showing results of leaving various samples in a high temperature and high humidity environment to evaluate the moisture permeability of the encapsulation layer 170 using PIB and a dehumidifying agent. After the samples were left in a high-temperature, high-humidity environment with a temperature of 85°C and a humidity of 85%, the change in color was periodically photographed to check the date at which the color began to change.

4 are photographs showing moisture resistance in a high-temperature, high-humidity environment when an encapsulation layer is manufactured using a conventional material. For the conventional encapsulant EVA film and olefin (Olefin), cobalt chloride paper was put between the glass plates, and the glass plate was attached using the encapsulant. Cobalt chloride paper has a blue color, but when it comes into contact with moisture, it reacts and turns blue or yellow.

When an EVA film used as a sealing material in a conventional solar cell is used as the sealing layer 170, the cobalt chloride paper on the 0th day has a blue color, but on the 2nd it can be seen that the color changes with a yellow color.

When olefin (olefin), which is used as a sealing material in a conventional solar cell, is used as the sealing layer 170, the color of the cobalt chloride paper changes to yellow on the 8th day, unlike the initial state of the blue cobalt chloride paper on day 0. Can be confirmed.

When Epoxy (epoxy), which is used as a sealing material in a conventional solar cell, is used as the sealing layer 170, it can be seen that the blue color of cobalt chloride paper on day 0 turns yellow on the 11th day.

For epoxy, the same experiment was conducted for perovskite solar cells. In FIG. 4, black on day 0 is perovskite, and yellow is a gold (Au) electrode. In the experiment on perovskite, similar to the experiment on cobalt chloride paper, it can be seen that perovskite reacts with water on the 11th day and the black color becomes pale.

That is, as shown in Fig. 4, when EVA, Olefin, and Epoxy materials are used as encapsulants, the time during which perovskite does not change to moisture is within 10 days, so the encapsulants of the material applied in the experimental results of Fig. 4 are It can be seen that there is a limit to application as an encapsulation layer to perovskite solar cell modules.

Meanwhile, FIG. 5 shows the results of moisture permeability resistance measured by leaving the perovskite solar cell module 100 encapsulated through PIB and a dehumidifying agent according to an embodiment of the present invention in a high temperature and high humidity environment. Black is perovskite, and if it is affected by moisture, the color becomes pale.

When the encapsulation layer 170 was prepared by containing 20% zeolite, discoloration of the perovskite could be observed on the 50th day. In the case of containing 40% zeolite, it was confirmed that the perovskite was discolored on the 80th day. In the case of containing 60% zeolite, the perovskite was discolored on the 100th day.

Perovskite's moisture permeability test was conducted in a high-temperature, high-humidity environment of 85°C and 85%, and if there is no change for more than 1,000 hours (about 42 days), in the actual environment where perovskite solar cells are installed 10 Perovskite solar cells can be used without exposure to moisture for more than a year. Therefore, in the case of manufacturing a perovskite solar cell with an embodiment of the present invention including a dehumidifying agent in the encapsulation layer, such as zeolite, since the perovskite is not exposed to moisture, an effect that can be used for a long life can be expected. .

And, in one example, when the perovskite solar cell module 100 encapsulated through PIB and a dehumidifying agent contains zeolite as a dehumidifying agent of the encapsulation layer 170, the amount of zeolite is 20 of the encapsulation layer 170 It is preferable to include in% to 60%. If the zeolite content is less than 20%, moisture permeability may be insufficient, and if the zeolite content exceeds 60%, the cost of raw materials increases. On the other hand, since the adhesiveness decreases as the amount of zeolite increases, it is more preferable to include a zeolite content of 20% to 40% in order to obtain a perovskite solar cell having sufficient moisture permeability and good adhesion.

As such, as the encapsulation layer 170 is formed in a structure including a dehumidifying agent, the moisture permeability resistance of the perovskite 150 is improved, and thus, the life and reliability of the perovskite solar cell are improved.

At this time, the encapsulation layer 170 includes the lower electrode 120, the electron transport layer 130, the perovskite 140, the hole transport layer 150 and the side of the upper electrode 160 and the upper electrode 160 It is positioned so as to cover all the upper portions of the perovskite 140 to block from moisture.

In addition, the upper plate 180 may be placed on the encapsulation layer 170 and vacuum-pressed and dried, or an adhesive may be applied on the encapsulation layer 170 to adhere the upper plate 180.

At this time, the upper plate 180 is the same configuration implemented in a conventional perovskite solar cell, and in this specification, the structure and operation of the upper plate 180 are not described in detail, but it should be understood at the level of those skilled in the art.

In summary, by the perovskite solar cell module 100 encapsulated through PIB and a dehumidifying agent according to an embodiment of the present invention, perovskite 140 is applied through a coating process, and a dehumidifying agent is included. As the encapsulation layer 170 has a structure positioned above the perovskite 140, the disadvantage of the perovskite 140 being vulnerable to moisture is canceled from the encapsulation layer 170 and thus perovskite There is an effect of improving the stability and reliability of Skyt solar cells.

And, since the perovskite 140 is formed from the coating process, in the conventional perovskite solar cell process, PVD (Physical Vapor Deposition), CVD (Chemical Vapor Deposition) or ALD (Automic Layor Deposition) process is used. Accordingly, there is an effect that can overcome the high cost problem or the problem of high temperature process.

Hereinafter, with reference to FIGS. 6 and 7, the encapsulation method of the perovskite solar cell module encapsulated through PIB and a dehumidifying agent according to an embodiment of the present invention includes forming a lower plate (S100), and a lower electrode. Forming (S200), forming an electron transport layer (S300), coating a perovskite (S400), forming a hole transport layer (S500), forming an upper electrode (S600) ), forming an encapsulation layer (S700), and forming an upper plate (S800).

At this time, the step of forming the lower plate (S100), the step of forming the lower electrode (S200), and the step of forming the electron transport layer (S300) are performed in the same manner as the process of manufacturing a conventional perovskite solar cell. Since it is a step that is performed, how each step is performed is not described in detail in the present specification, but it should be understood at the level of those skilled in the art.

The step of coating perovskite (S400) is a step of coating perovskite on the top of the electron transport layer formed from the step of forming an electron transport layer (S300), and includes spin coating, spray coating, screen coating, and slot It may be performed by either die coating or blade coating.

In this case, in the step of coating the perovskite (S400), the perovskite coating may be applied to only a part of the upper portion of the perovskite 140 of the electron transport layer 130.

In the step of forming the hole transport layer (S500), the hole transport layer 150 is formed on the perovskite 140 coated in the step (S400) of coating the perovskite.

Forming the upper electrode (S600) is a step of forming the upper electrode 160 on the top of the hole transport layer 150, and is performed in the same process as forming the upper electrode in a conventional perovskite solar cell. , Although it is not described in detail in the present specification, it will be understood at the level of those skilled in the art.

Next, the step of forming the encapsulation layer (S700) is a solid PIB sealant using a non-polar solvent that does not affect the perovskite 140 layer, such as benzene, toluene, and hexane, as shown in FIG. Liquefying (S710), mixing a dehumidifying agent (S720), removing a solvent through heating (S730), and the lower electrode 120, the electron transport layer 130, and the perovskite 140 , Stacking/applying the encapsulation layer 170 to surround the hole transport layer 150 and the upper electrode 160 (S740).

At this time, the step of mixing the dehumidifying agent (S720) is a step of mixing the dehumidifying agent with the PIB sealant liquefied in the above step (S710), which is formed as a liquid encapsulant from the above steps (S710 and S720), and the liquid encapsulant is As the encapsulation layer 170, it is formed on the top of the perovskite 140 and the hole transport layer 150.

In addition, the step of forming the upper plate (S800) is a step of forming the upper plate 180 on the upper electrode 160, and is performed in the same process as forming the upper plate in a conventional perovskite solar cell. Therefore, it will not be described in detail in the present specification, but will be understood at the level of those skilled in the art.

And, as shown in Figure 8, the encapsulation method of the perovskite solar cell module encapsulated through PIB and a dehumidifying agent according to an embodiment of the present invention, after step S800, the side of the lower plate and the upper plate It further comprises a step (S9000) of fitting and coupling the guide so as to be enclosed.

As described above, as the encapsulation method using PIB and a dehumidifying agent according to an embodiment of the present invention is performed, it is possible to manufacture a perovskite solar cell with improved reliability due to excellent moisture permeability.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements by those skilled in the art using the basic concept of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

100: Perovskite solar cell module encapsulated through PIB and dehumidifier
110: lower plate 120: lower electrode
130: electron transport layer 140: perovskite
150: hole transport layer 160: upper electrode
170: encapsulation layer 180: upper plate
10: guide

Claims (8)

In the perovskite solar cell configured by stacking a lower plate, a lower electrode, an electron transport layer, a perovskite, a hole transport layer, an upper electrode, and an upper plate,
A perovskite coated on the electron transport layer; And
And an encapsulation layer formed to cover the perovskite and the hole transport layer and the upper electrode formed on the perovskite and contain a dehumidifying agent to block the perovskite from moisture,
The encapsulation layer,
A perovskite solar cell module, characterized in that formed by liquefying a solid PIB sealant with a solvent, mixing a dehumidifying agent, and removing the solvent by applying heat at a preset temperature.
The method of claim 1,
The encapsulation layer,
Perovskite solar cell module, characterized in that formed to a thickness of 0.2mm to 0.4mm. The method of claim 1,
It is configured to further include an adhesive applied to the upper portion of the encapsulation layer,
A perovskite solar cell module, characterized in that it has a structure in which the encapsulation layer is red/applied on the upper electrode. The method of claim 1,
The dehumidifying agent,
Perovskite solar cell module, characterized in that consisting of any one of zeolite, silica gel, or molecular sieve. The method of claim 1,
A guide that is fitted to surround both sides of the lower plate and the upper plate, and the PIB density of the encapsulation layer is lowered due to an increase in volume due to an increase in temperature, thereby preventing moisture from penetrating into the perovskite.
Perovskite solar cell module, characterized in that it further comprises. In the encapsulation method of a perovskite solar cell module configured by stacking a lower plate, a lower electrode, an electron transport layer, a perovskite, a hole transport layer, an upper electrode, and an upper plate,
(a) coating the perovskite on the electron transport layer;
(b) comprising the step of forming an encapsulation layer containing a dehumidifying agent on top of the perovskite,
The step (b),
(b-1) liquefying the PIB sealant in a solid state;
(b-2) mixing a dehumidifying agent;
(b-3) removing the solvent through heating; And
(b-4) forming an encapsulation layer to surround the lower electrode, the electron transport layer, the perovskite, the hole transport layer, and the upper electrode.
Encapsulation method of a perovskite solar cell module, comprising: The method of claim 6,
The step (a),
Encapsulation method of a perovskite solar cell module, characterized in that carried out through any one of spin coating, spray coating, screen coating, slot die coating, or blade coating. The method of claim 6,
After step (b),
(c) fitting and coupling a guide so as to surround the sides of the lower plate and the upper plate
Encapsulation method of a perovskite solar cell module, characterized in that it further comprises.

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