A device for improving the performance of perovskite solar cells

Abstract

An embodiment of the present application discloses a device for improving the performance of a perovskite solar cell, which includes a platform, a sealing cover, and an air inlet assembly. A through hole is provided on the platform, and the through hole is used to discharge the gas between the platform and the perovskite solar cell; the sealing cover is hermetically pressed on the upper surface of the platform through a pressing member, and a sealed space is formed between the sealing cover and the upper surface of the platform; the air inlet assembly supplies high-pressure gas into the sealing cover to make the gas pressure in the sealing cover reach a preset pressure. After the preset pressure is maintained in the sealing cover for a preset time, the sealing cover rises under the action of the pressing member, and the processed perovskite solar cell is taken out. The present application applies pressure to the perovskite solar cell through high-pressure gas with a preset pressure, and it is a non-contact type, so as to achieve the purpose of enhancing the bonding force between the film layers of the perovskite solar cell, reducing the defects at the film layer interface of the perovskite solar cell, and thus improving the power of the perovskite solar cell.

Description

Technical Field

[0001] The present application relates to the field of new energy technology, and in particular to a device for improving the performance of perovskite solar cells. Background Art

[0002] Perovskite solar cells have the advantages of high conversion efficiency, low cost, and environmental friendliness. Perovskite solar cells are stacked in sequence with a glass substrate, a transparent conductive film, a first carrier transport layer, a perovskite wet film layer, a second carrier transport layer, and a metal layer, with the metal layer serving as a conductive electrode.

[0003] In the prior art, the first carrier transport layer, the second carrier transport layer and the metal layer are usually prepared by evaporation. The bonding force between the film layers produced by the evaporation method is weak, which may cause more defects at the film layer interface and reduce the power of the perovskite solar cell.

[0004] Therefore, how to reduce defects at the film interface of perovskite solar cells to improve the power of perovskite solar cells has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] The present application proposes a device for improving the performance of perovskite solar cells, so as to reduce defects at the film interface of the perovskite solar cells and improve the power of the perovskite solar cells.

[0006] In order to achieve the above-mentioned object, the present application provides a device for improving the performance of perovskite solar cells, comprising:

[0007] A platform, wherein a perovskite solar cell can be placed on the upper surface of the platform, and a through hole is provided on the platform corresponding to the position of the perovskite solar cell, and the through hole is used to discharge the gas between the perovskite solar cell and the platform;

[0008] A sealing cover is sealed and pressed on the upper surface of the platform through a pressing member, and the sealing cover is arranged on the perovskite solar cell;

[0009] The air intake assembly is arranged on the sealing cover and can fill the sealing cover with high-pressure gas so that the gas pressure in the sealing cover reaches a preset pressure.

[0010] Preferably, in the above-mentioned device for improving the performance of perovskite solar cells, the pressing member is a telescopic cylinder, and the telescopic cylinder is used to drive the sealing cover to move in a direction perpendicular to the platform.

[0011] Preferably, in the above device for improving the performance of perovskite solar cells, the cylinder block of the telescopic cylinder is connected to the platform, and the telescopic rod of the telescopic cylinder is communicated with the sealing cover.

[0012] Preferably, in the above device for improving the performance of perovskite solar cells, the air inlet assembly includes an air inlet pipe, an air inlet hole and an air inlet valve. The air inlet hole is opened on the sealing cover and communicated with the sealing cover. The air inlet end of the air inlet pipe can be communicated with a gas supply device. The air outlet end of the air inlet pipe is located in the air inlet hole. The air inlet valve is arranged at the air inlet end of the air inlet pipe.

[0013] Preferably, in the above device for improving the performance of perovskite solar cells, a pressure gauge is further included, which is installed on the sealing cover and used to detect the gas pressure in the sealing cover.

[0014] Preferably, in the above device for improving the performance of perovskite solar cells, an air extraction assembly is further included, which is used to extract the gas in the sealing cover. The air extraction assembly includes an air extraction pipe, a gas collecting tank and a fan. One end of the air extraction pipe is communicated with the sealing cover, the other end of the air extraction pipe is communicated with the gas collecting tank, and the fan is arranged on the air extraction pipe.

[0015] Preferably, in the above device for improving the performance of perovskite solar cells, a sealing ring is arranged at one end of the sealing cover connected to the platform, and the sealing ring is used to seal the gap between the sealing cover and the platform.

[0016] Preferably, in the above device for improving the performance of perovskite solar cells, the number of the through holes is multiple.

[0017] Preferably, in the above device for improving the performance of perovskite solar cells, the sealing cover is a cubic cover.

[0018] The device for improving the performance of perovskite solar cells provided by the embodiments of the present application includes a platform, a sealing cover and an air inlet assembly. A through hole is provided on the platform, and the through hole is used to discharge the gas between the platform and the perovskite solar cell; the sealing cover is hermetically pressed on the upper surface of the platform through a pressing member, and a sealed space is formed between the sealing cover and the upper surface of the platform; the air inlet assembly supplies high-pressure gas into the sealing cover to make the gas pressure in the sealing cover reach a preset pressure. After the preset pressure is maintained in the sealing cover for a preset time, the sealing cover rises under the action of the pressing member, and the processed perovskite solar cell is taken out. The device for improving the performance of perovskite solar cells disclosed in the present application applies pressure to the perovskite solar cell through high-pressure gas with a preset pressure, and it is a non-contact type, so as to achieve the purpose of enhancing the bonding force between the film layers of the perovskite solar cell and reducing the defects at the film layer interface of the perovskite solar cell, thereby improving the power of the perovskite solar cell. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some examples or embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings, and the present application can also be applied to other similar scenarios according to the provided drawings. Unless obvious from the language context or otherwise stated, the same reference numerals in the drawings represent the same structure or operation.

[0020] Figure 1 It is a schematic structural diagram of the platform of the device for improving the performance of perovskite solar cells provided by the embodiments of the present application;

[0021] Figure 2 It is a schematic structural diagram before the cover body of the device for improving the performance of perovskite solar cells provided by the embodiments of the present application is attached to the platform;

[0022] Figure 3 It is a schematic structural diagram after the cover body of the device for improving the performance of perovskite solar cells provided by the embodiments of the present application is attached to the platform.

[0023] Wherein:

[0024] 1. Platform, 2. Perovskite solar cell, 3. Sealing cover, 4. Air inlet pipe, 5. Air inlet valve, 6. Sealing ring, 7. Through hole, 8. Pressure gauge. Detailed Embodiments

[0025] The present application will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related application, rather than limiting the application. The described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0026] It should be noted that for the convenience of description, only the parts related to the relevant application are shown in the drawings. Without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0027] It should be understood that the "system", "device", "unit" and / or "module" used in the present application is a method for distinguishing different components, elements, parts, portions or assemblies at different levels. However, if other words can achieve the same purpose, the word can be replaced by other expressions.

[0028] As shown in the present application and the claims, unless the context clearly indicates an exception, words such as "a", "an", "one" and / or "the" are not specifically singular and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of the steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. An element defined by the statement "comprising one..." does not exclude the existence of another identical element in the process, method, commodity or device including the element.

[0029] Among them, in the description of the embodiments of the present application, unless otherwise specified, " / " means "or". For example, A / B may mean A or B; the "and / or" herein is only a description of the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B may mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of the present application, "a plurality" means two or more than two.

[0030] Hereinafter, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0031] In this application, flowcharts are used to illustrate the operations performed by the systems according to the embodiments of this application. It should be understood that the preceding or subsequent operations are not necessarily executed precisely in sequence. On the contrary, the steps can be processed in reverse order or simultaneously. At the same time, other operations can also be added to these processes, or one or several steps can be removed from these processes.

[0032] Please refer to Figures 1 - 3 。

[0033] Some embodiments of this application disclose a device for improving the performance of perovskite solar cells, including a platform 1, a sealing cover 3, and an air inlet assembly.

[0034] Among them, a perovskite solar cell 2 can be placed on the platform 1. As Figures 1 - 3 shown, the platform 1 is a flat platform. The platform 1 can be attached to the perovskite solar cell 2. A through hole 7 is provided at the position of the platform 1 corresponding to the perovskite solar cell 2. The through hole 7 is used to discharge the gas between the platform 1 and the perovskite solar cell 2 to ensure that the perovskite solar cell 2 can be attached to the platform 1.

[0035] The sealing cover 3 is arranged on the platform 1. The sealing cover 3 is hermetically pressed on the platform 1 through a pressing member, and a sealed space is formed between the sealing cover 3 and the platform 1.

[0036] The air inlet assembly is arranged on the sealing cover 3 and can fill high-pressure gas into the sealing cover 3 to make the gas pressure in the sealing cover 3 reach a preset pressure.

[0037] It should be noted here that the preset pressure is the gas pressure preset by those skilled in the art according to processing needs, and the preset gas pressures are different for different processing requirements.

[0038] The device for improving the performance of perovskite solar cells disclosed in this application includes a platform 1, a sealing cover 3, and an air inlet assembly. A through hole 7 is provided on the platform 1, and the through hole 7 is used to discharge the gas between the platform 1 and the perovskite solar cell 2; the sealing cover 3 is hermetically pressed on the platform 1 through a pressing member, and a sealed space is formed between the sealing cover 3 and the platform 1; the air inlet assembly supplies high-pressure gas into the sealing cover 3 to make the gas pressure in the sealing cover 3 reach a preset pressure. After maintaining the preset pressure in the sealing cover 3 for a preset time, the sealing cover 3 rises under the action of the pressing member, and the processed perovskite solar cell 2 is taken out. The device for improving the performance of perovskite solar cells disclosed in this application applies pressure to the perovskite solar cell 2 through high-pressure gas with a preset pressure, and it is a non-contact type, so as to achieve the purpose of enhancing the bonding force between the film layers of the perovskite solar cell 2, reducing the defects at the film layer interface of the perovskite solar cell 2, and thus improving the power of the perovskite solar cell 2.

[0039] Preferably, the number of through holes 7 is multiple, and they are evenly distributed on the platform 1.

[0040] In this application, the gas pressure inside the sealing cover is controlled at 0.1 - 1.0 Mpa

[0041] As shown in the following table,

[0042] Number Pressure Mpa Power before pressurization w Power after pressurization w 1 0.1 7.9w 8.2w 2 0.3 9.8w 19.4w 3 0.5 6.05w 12.0w

[0043] As can be seen from the above table, when the gas pressure increases from 0.1 Mpa to 0.3 Mpa, the performance of the perovskite solar cell 2 is enhanced. When the gas pressure increases from 0.3 Mpa to 0.5 Mpa, the performance of the perovskite solar cell 2 weakens. An inflection point appears in the performance of the perovskite solar cell 2 between 0.3 Mpa - 0.5 Mpa. Preferably, the gas pressure inside the sealing cover 3 is controlled at about 0.3 Mpa, and at this time, the performance of the perovskite solar cell 2 is significantly enhanced.

[0044] In this application, the pressure is applied to the perovskite solar cell 2 by the pressure difference between the high - pressure gas and the atmospheric pressure. It is a non - contact pressure application and will not damage the perovskite solar cell 2. The high - pressure gas is evenly distributed inside the sealing cover 3, and the pressure applied to the perovskite solar cell 2 is uniform, which can effectively enhance the bonding force of each part of the film layer of the perovskite solar cell 2.

[0045] When the air inlet assembly fills the sealed space formed by the sealing cover 3 and the platform 1 with gas, part of the gas will be discharged through the through holes 7. However, the air inlet speed of the air inlet assembly is greater than the gas discharge speed through the through holes 7, and most of the gas still remains in the sealed space. As the amount of gas filled increases, the pressure difference between the upper and lower surfaces of the perovskite solar cell 2 gradually increases, applying pressure to the perovskite solar cell 2.

[0046] The pressing member can apply a pressing force to the sealing cover 3 to ensure the sealing performance between the sealing cover 3 and the platform 1. After the pressing operation of the device for improving the performance of the perovskite solar cell on the perovskite solar cell 2 is completed, the pressing member releases the pressing effect on the sealing cover 3, and the high - pressure gas inside the sealing cover 3 can be discharged through the gap between the sealing cover 3 and the platform 1, or through the end where the sealing cover 3 cooperates with the platform 1.

[0047] As Figure 2 and 3 shown, the end where the sealing cover 3 cooperates with the platform 1 is an open end, and a sealing member is provided at the open end. The parts where the sealing cover 3 is not hermetically connected to the platform 1 are all closed.

[0048] In some embodiments of the present application, the pressing member is a telescopic cylinder, and the telescopic cylinder is used to drive the sealing cover 3 to move in a direction perpendicular to the platform 1. Specifically, the cylinder body of the telescopic cylinder is connected to the platform 1, and the telescopic rod of the telescopic cylinder is connected to the sealing cover 3.

[0049] There are two directions for the telescopic cylinder to drive the sealing cover 3 to move in a direction perpendicular to the platform 1. One is to move towards the direction close to the platform 1, and the other is to move towards the direction away from the platform 1. When the telescopic cylinder drives the sealing cover 3 to move towards the direction close to the platform 1, the sealing cover 3 is sealed with the platform 1; when the telescopic cylinder drives the sealing cover 3 to move towards the direction away from the platform 1, the sealing cover 3 is not sealed with the platform 1. At this time, the perovskite solar cell 2 can be taken and placed and the high-pressure gas can be discharged.

[0050] Preferably, the number of telescopic cylinders is multiple, and the multiple telescopic cylinders are arranged on the top wall of the sealing cover 3.

[0051] The telescopic cylinder can be an air cylinder or an oil cylinder, etc.

[0052] Such as Figure 2 and 3 As shown, the sealing cover 3 is a cubic cover, and the cross-sectional area of the cubic cover in the direction parallel to the platform 1 is larger than the area of the perovskite solar cell 2 and smaller than the area of the platform 1.

[0053] Preferably, pressing members are arranged on the four side walls of the sealing cover 3 perpendicular to the platform 1.

[0054] The sealing cover 3 is not limited to a cubic cover, and can also be a pyramidal cover, a prismatic cover, a hemispherical cover, a semi-ellipsoidal cover, or other shapes, which are not specifically limited herein.

[0055] The sealing cover 3 can be a glass cover, a stainless steel cover, or a plastic cover, or a cover body made of other hard materials, which are not specifically limited herein.

[0056] The sealing cover 3 is sealed with the platform 1 through a sealing ring 6. Specifically, the sealing ring 6 is arranged at the open end of the sealing cover 3, and the sealing ring 6 is used to seal the gap between the platform 1 and the sealing cover 3.

[0057] Such as Figure 2 and 3 As shown, the air inlet assembly includes an air inlet pipe 4, an air inlet hole, and an air inlet valve 5. The air inlet hole is opened on the sealing cover 3 and communicated with the sealing cover 3. The air inlet end of the air inlet pipe 4 can be communicated with a gas supply device, the air outlet end of the air inlet pipe 4 is located in the air inlet hole, and the air inlet valve 5 is arranged at the air inlet end of the air inlet pipe 4.

[0058] When it is necessary to supply gas into the sealing cover 3, the air inlet valve 5 is opened, and the gas supply device supplies gas into the sealing cover 3 through the air inlet pipe 4;

[0059] When the gas supply to the sealing cover 3 is stopped, the intake valve 5 is closed, the gas supply device shuts down, and no gas is supplied to the sealing cover 3 through the intake pipe 4.

[0060] Preferably, the intake valve 5 is a solenoid valve, and the intake valve 5 is communicatively connected to the gas supply device. Specifically, when the intake valve 5 is opened, the gas supply device starts up and supplies gas to the sealing cover 3. When the intake valve 5 is closed, the gas supply device shuts down and does not supply gas to the sealing cover 3.

[0061] The device for improving the performance of perovskite solar cells disclosed in this application further includes a pressure gauge 8. The pressure gauge 8 is installed on the sealing cover 3 and is used to detect the gas pressure inside the sealing cover 3.

[0062] The pressure gauge 8 continuously collects the pressure inside the sealing cover 3. After the gas pressure inside the sealing cover 3 reaches a certain value, the gas supply device stops supplying gas to the sealing cover 3.

[0063] The above operations can be achieved manually, or the pressure gauge 8 can be communicatively connected to the gas supply device to realize the automatic control of shutting down the gas supply device.

[0064] The gas supply device can be a gas cylinder or a compressor.

[0065] The high-pressure gas can be air, or an inert gas. The inert gas can be nitrogen, argon, etc.

[0066] When the high-pressure gas is a gas other than air, an air extraction assembly can be provided on the sealing cover 3 to extract the gas inside the sealing cover 3 to a gas collection tank, reducing the pollution to the air.

[0067] In some embodiments of this application, the air extraction assembly includes an air extraction pipe, a collection tank, and a fan. One end of the air extraction pipe is communicated with the sealing cover 3, the other end of the air extraction pipe is communicated with the collection tank, and a fan is provided on the air extraction pipe. The fan provides power to extract the gas inside the sealing cover 3 into the collection tank, and the collection tank collects the gas inside the sealing cover 3. In this application, the gas inside the sealing cover 3 is collected by the collection tank. On the one hand, if the gas inside the sealing cover 3 is a polluting gas, it can reduce the pollution to the environment. On the other hand, it realizes the reuse of the gas and reduces the cost.

[0068] The above description is only a preferred embodiment of the present application and an explanation of the applied technical principles, and is not intended to limit the present application. For those skilled in the art, various modifications and changes can be made to the present application. The scope of the application involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above application concept. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) disclosed in the present application that have similar functions.

Claims

1. A device for improving the performance of perovskite solar cells, characterized in that, Including: A platform (1), the upper surface of the platform (1) can place a perovskite solar cell (2), and through holes (7) are arranged at positions corresponding to the perovskite solar cell (2) on the platform (1), and the through holes (7) are used to discharge the gas between the perovskite solar cell (2) and the platform (1); A sealing cover (3), which is hermetically pressed on the upper surface of the platform (1) by a pressing member, and the sealing cover (3) covers the perovskite solar cell (2); An air inlet assembly, which is arranged on the sealing cover (3) and can fill high-pressure gas into the sealing cover (3) so that the gas pressure in the sealing cover (3) reaches a preset pressure; The pressing member is a telescopic cylinder, and the telescopic cylinder is used to drive the sealing cover (3) to move in a direction perpendicular to the platform (1); The cylinder body of the telescopic cylinder is connected to the platform (1), and the telescopic rod of the telescopic cylinder is communicated with the sealing cover (3); It further includes an air extraction assembly for extracting the gas in the sealing cover (3). The air extraction assembly includes an air extraction pipe, a gas collecting tank and a fan. One end of the air extraction pipe is communicated with the sealing cover (3), the other end of the air extraction pipe is communicated with the gas collecting tank, and the fan is arranged on the air extraction pipe.

2. The device for improving the performance of perovskite solar cells according to claim 1, characterized in that, The air inlet assembly includes an air inlet pipe (4), an air inlet hole and an air inlet valve (5). The air inlet hole is opened on the sealing cover (3) and communicated with the sealing cover (3). The air inlet end of the air inlet pipe (4) can be communicated with a gas supply device. The air outlet end of the air inlet pipe (4) is located in the air inlet hole, and the air inlet valve (5) is arranged at the air inlet end of the air inlet pipe (4).

3. The device for improving the performance of perovskite solar cells according to claim 1, characterized in that, It further includes a pressure gauge (8), which is installed on the sealing cover (3) and used to detect the gas pressure in the sealing cover (3).

4. The device for improving the performance of perovskite solar cells according to claim 1, characterized in that, A sealing ring (6) is arranged at one end of the sealing cover (3) connected to the platform (1), and the sealing ring (6) is used to seal the gap between the sealing cover (3) and the platform (1).

5. The device for improving the performance of perovskite solar cells according to claim 1, characterized in that, The number of the through holes (7) is multiple.

6. The device for improving the performance of perovskite solar cells according to claim 1, wherein The sealing cover (3) is a cubic cover.

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