Film layer preparation device and film layer preparation method

Abstract

The invention relates to the technical field of semiconductors and photovoltaic cells, in particular to a film layer preparation device and a film layer preparation method, and aims to solve the problems of high cost, low material utilization rate and low production efficiency of the film layer preparation device. The film layer preparation device comprises at least one process roller and a container. The process roller is provided with an attachment face extending in the first direction, and the container is arranged below the process roller. At least part of the attachment surface can be attached to a solution and can be in rolling contact with the first surface, so that at least part of the solution attached to the attachment surface can be attached to the first surface, and a film layer is prepared on the first surface of the product. The film preparation device is simple in structure and low in cost. In addition, the solution attached to the process roller can drop into the container, so that the solution can be reused, and the utilization rate of the solution is improved. In addition, according to the film layer preparation device, the film layer can be prepared on the first surface of the product through rotation of the process roller, and the film layer preparation efficiency is high.

Description

Technical Field

[0001] This application relates to the fields of semiconductor and photovoltaic cell technology, and in particular to a film preparation apparatus and a film preparation method. Background Technology

[0002] Perovskite solar cells possess advantages such as high visible light absorption and rapid improvement in photoelectric conversion efficiency. Fabrication of perovskite solar cells requires the preparation of a perovskite film layer on a silicon wafer. Currently, methods for preparing perovskite films include vapor deposition, blade coating, slot coating, screen printing, spraying, and inkjet printing.

[0003] However, the membrane preparation equipment used in the above membrane preparation methods suffers from problems such as high cost, low material utilization, and low production efficiency. Summary of the Invention

[0004] In view of this, embodiments of this application provide a membrane preparation apparatus and a membrane preparation method to solve the problems of high cost, low material utilization, and low production efficiency of the membrane preparation apparatus.

[0005] In a first aspect, one embodiment of this application provides a film preparation apparatus, comprising: at least one process roller extending along a first direction and having an adhesion surface extending along the first direction, the process roller being rotatable about an axis parallel to the first direction, the adhesion surface being configured to carry the product and contact a first surface of the product; a container disposed below the process roller, the container having a receiving chamber and an upwardly facing opening, the opening communicating with the receiving chamber, the receiving chamber being capable of containing a solution; wherein at least a portion of the adhesion surface extends into the receiving chamber so that at least a portion of the adhesion surface can adhere to the solution; wherein the adhesion surface is capable of rolling contact with the first surface so that at least a portion of the solution adhered to the adhesion surface can adhere to the first surface.

[0006] In conjunction with the first aspect, in some implementations of the first aspect, the process roller includes: a process roller body extending along the first direction and having a side extending along the first direction, the process roller body being rotatable about an axis parallel to the first direction; and a flexible film layer wrapping around the side of the process roller body, the surface of the flexible film layer away from the side of the process roller body forming the adhesion surface.

[0007] In conjunction with the first aspect, in some implementations of the first aspect, the product further has a second surface disposed opposite to the first surface; wherein the film preparation apparatus further includes: at least one pressure roller, the pressure roller being disposed adjacent to the process roller, extending along the first direction, having an extrusion surface extending along the first direction, the pressure roller being rotatable about an axis parallel to the first direction; wherein the product is disposed between the adjacent pressure roller and the process roller, the extrusion surface being capable of rolling contact with the second surface, and applying pressure toward the adhesion surface to the product.

[0008] In conjunction with the first aspect, in some implementations of the first aspect, the number of process rollers is multiple, the multiple process rollers are arranged sequentially along a second direction, and the attachment surfaces of at least two of the multiple process rollers jointly support the product, the second direction being perpendicular to the first direction.

[0009] In conjunction with the first aspect, in some implementations of the first aspect, the film preparation apparatus further includes: a feeding assembly configured to carry the product and transport the product to the process roller; and / or, an unloading assembly configured to carry the product and receive the product carried by the process roller.

[0010] In conjunction with the first aspect, in some implementations of the first aspect, when the film preparation apparatus includes the feeding assembly, the feeding assembly moves the product to the process roller along a third direction; wherein, along the third direction, the vertical height of the surface of the feeding assembly that contacts the product increases, so that the vertical height of one of the products located on the feeding assembly gradually increases along the third direction.

[0011] In conjunction with the first aspect, in some implementations of the first aspect, the feeding assembly includes: a plurality of feeding rollers arranged sequentially along the third direction, the feeding rollers being rotatable and configured to carry the product and transport the product to the process roller by means of rotation; wherein, along the third direction, the vertical height of the geometric centers of the plurality of feeding rollers increases sequentially.

[0012] In conjunction with the first aspect, in some implementations of the first aspect, the feeding assembly further includes: at least one transition roller disposed between the feeding roller and the process roller; wherein the transition roller is located above the container, and the solution on the transition roller can enter the receiving chamber through the opening.

[0013] In conjunction with the first aspect, in some implementations of the first aspect, when the film preparation apparatus includes the feeding assembly, the feeding assembly drives the product to transport the product along a third direction; the feeding assembly includes: a plurality of feeding rollers arranged sequentially along the third direction, the feeding rollers being rotatable and configured to carry the product and transport the product by rotation; wherein the lower surface of the product has a first end and a second end opposite to each other, and the feeding rollers include: two carrying sections, respectively configured to carry the first end and the second end of the product; a connecting section connecting the two carrying sections, the diameter of the connecting section being smaller than the diameter of the carrying sections.

[0014] In conjunction with the first aspect, in some implementations of the first aspect, the two bearing segments respectively make line contact or point contact with the first end and the second end of the product.

[0015] In conjunction with the first aspect, in some implementations of the first aspect, the film preparation apparatus further includes: a drying component, disposed adjacent to the process roller, configured to provide heat energy to the process roller; and / or, the film preparation apparatus further includes: a housing having a receiving space and an air inlet and an air outlet communicating with the receiving space, the process roller being disposed in the receiving space, and the product being able to be placed in the receiving space; wherein impurity gas can flow out of the receiving space from the air outlet, and inert gas can flow into the receiving space from the air inlet; and / or, the film preparation apparatus further includes: a support component, configured to support the process roller, the process roller and the support component being rotatably connected about an axis parallel to the first direction; at least one first drive component, connected to the process roller, configured to drive the process roller to rotate about an axis parallel to the first direction.

[0016] In conjunction with the first aspect, in some implementations of the first aspect, the solution comprises a perovskite solution, which forms a perovskite film after being attached to the first surface.

[0017] In a second aspect, one embodiment of this application provides a method for preparing a film layer, applied to the film layer preparation apparatus described in the first aspect; wherein, the method for preparing the film layer includes: rotating a process roller to allow a solution in a container to adhere to an adhesion surface of the process roller; placing a product on the adhesion surface of the process roller, causing the adhesion surface to roll into contact with a first surface of the product, so that at least a portion of the solution adhering to the adhesion surface can adhere to the first surface.

[0018] The film preparation apparatus provided in this application utilizes the rotation of a process roller to adhere a solution from a container to an adhesion surface. The rotation of the process roller also enables rolling contact with the first surface of the product, thereby adhering at least a portion of the solution from the adhesion surface to the first surface, thus achieving film preparation on the first surface of the product. This film preparation apparatus has a simple structure, low cost, and is easy to maintain. Furthermore, the solution adhering to the process roller can drip back into the container, enabling solution reuse and improving solution utilization. In addition, this film preparation apparatus can achieve film preparation on the first surface of the product simply by rotating the process roller, allowing for continuous production and high film preparation efficiency. Attached Figure Description

[0019] The above and other objects, features, and advantages of this application will become more apparent from the more detailed description of the embodiments of this application in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps.

[0020] Figure 1 The diagram shown is a schematic diagram of the film preparation apparatus provided in one embodiment of this application.

[0021] Figure 2 The diagram shown is a structural schematic of a process roller provided in another embodiment of this application.

[0022] Figure 3 The diagram shown is a schematic cross-section of a process roller provided in one embodiment of this application.

[0023] Figure 4 The diagram shown is a schematic diagram of a film preparation apparatus provided in another embodiment of this application.

[0024] Figure 5 The diagram shown is a structural schematic of a process roller, a pressure roller, and a product provided in an embodiment of this application.

[0025] Figure 6 The diagram shown is a schematic diagram of a film preparation apparatus provided in another embodiment of this application.

[0026] Figure 7 The diagram shown is a schematic diagram of a film preparation apparatus provided in another embodiment of this application.

[0027] Figure 8 The diagram shown is a schematic diagram of a film preparation apparatus provided in another embodiment of this application.

[0028] Figure 9 The diagram shown is a schematic diagram of a film preparation apparatus provided in another embodiment of this application.

[0029] Figure 10 The diagram shown is a structural schematic of a feeding roller provided in an embodiment of this application.

[0030] Figure 11 The diagram shown is a schematic flowchart of a film preparation method provided in an embodiment of this application.

[0031] Figure label:

[0032] 1. Film preparation apparatus; 10. Process roller; 11. Adhesion surface; 110. Process roller body; 120. Flexible film layer; 20. Container; 21. Reception chamber; 22. Opening; 30. Pressure roller; 31. Extrusion surface; 40. Feeding assembly; 41. Feeding roller; 42. Transition roller; 50. Unloading assembly; 51. Unloading roller; 511. Bearing section; 512. Connecting section; 60. Drying assembly; 70. Shell; 71. Reception space; 72. Air inlet; 73. Air outlet; 80. Support assembly; 90. First drive assembly; 2. Product; 201. First surface; 202. Second surface; 203. First end; 204. Second end; 3. Solution; X1. First direction; Y1. Second direction; X2. Third direction. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] Methods for preparing perovskite films include vapor deposition, blade coating, slot coating, screen printing, spraying, and inkjet printing. The disadvantages of vapor deposition are: it is only applicable to dry perovskite preparation, it consumes a lot of energy, the entire cavity is contaminated, cleaning is difficult, material utilization is low, and equipment cost is very high. The disadvantages of blade coating are: it causes significant damage to the battery substrate, low utilization of the perovskite solution, and poor uniformity of the prepared perovskite layer. The disadvantages of slot coating are: low efficiency and high equipment cost. The disadvantages of screen printing are: low material utilization. The disadvantages of spraying are: extremely low material utilization, poor film adhesion, low bonding strength, poor film uniformity, and poor repeatability. The disadvantages of inkjet printing are: high cost and low efficiency. In other words, the main problems with the film preparation equipment used in the above methods are high cost, low material utilization, and low production efficiency.

[0035] This application addresses the main problems existing in the aforementioned membrane preparation apparatus. The membrane preparation apparatus will now be described in detail with reference to the accompanying drawings.

[0036] Figure 1 The diagram shown is a schematic diagram of the film preparation apparatus provided in one embodiment of this application. Figure 2 The diagram shown is a structural schematic of a process roller provided in another embodiment of this application. Figure 3 The diagram shown is a schematic cross-section of a process roller provided in one embodiment of this application. Figure 4 The diagram shown is a schematic diagram of a film preparation apparatus provided in another embodiment of this application. Figure 5 The diagram shown is a structural schematic of a process roller, a pressure roller, and a product provided in an embodiment of this application. Figures 1 to 5 As shown, the film preparation apparatus 1 includes at least one process roller 10 and a container 20.

[0037] The process roller 10 extends along a first direction X1. Exemplarily, the process roller 10 may include a cylindrical structure, a rod-shaped structure, or the like. The process roller 10 is provided with an attachment surface 11 extending along the first direction X1. Exemplarily, such as... Figure 2 As shown, the process roller 10 has a cylindrical structure, and the adhesion surface 11 is the side surface of the cylindrical structure. The process roller 10 is rotatable about an axis parallel to the first direction X1, and the adhesion surface 11 is configured to carry the product 2 and contact the first surface 201 of the product 2.

[0038] The container 20 is positioned below the process roller 10. The container 20 has a receiving chamber 21 and an upward-facing opening 22, which communicates with the receiving chamber 21. The receiving chamber 21 can hold the solution 3. The container 20 can be a solution pool, solution box, or any other container that can hold the solution 3.

[0039] Exemplarily, product 2 can be a substrate for fabricating perovskite solar cells. Exemplarily, product 2 can be a sheet-like structure, such as a silicon wafer, glass substrate, or crystal wafer. Exemplarily, the size of product 2 can be 210 mm x 210 mm. Product 2 can also be a block structure or a strip structure; this application does not specifically limit this. In some embodiments, solution 3 can be a perovskite solution, which forms a perovskite film layer after being attached to the first surface 201. The viscosity and concentration of the perovskite solution can be adjusted as needed to facilitate the attachment of the perovskite solution to the first surface 201 of product 2 and improve the uniformity of the prepared film layer.

[0040] At least a portion of the adhesion surface 11 extends into the receiving chamber 21 so that at least a portion of the adhesion surface 11 can adhere to the solution 3. The adhesion surface 11 can roll into contact with the first surface 201 so that at least a portion of the solution 3 adhered to the adhesion surface 11 can adhere to the first surface 201, thereby realizing the preparation of a film layer on the first surface 201 of the product 2. This film layer preparation apparatus 1 has a simple structure and low cost.

[0041] Exemplarily, the adhesion surface 11 extends into the receiving chamber 21 through the opening 22. As the process roller 10 rotates, the adhesion surface 11 can be coated with the solution 3. Exemplarily, the first surface 201 is located on the lower surface of the product 2. Exemplarily, the adhesion surface 11 is a cylindrical surface that carries the product 2. As the process roller 10 rotates, the adhesion surface 11 rolls on the first surface 201, causing the product 2 to move along the second direction Y1, thereby coating the first surface 201 of the product 2 with the solution 3 while transporting the product 2, forming a film layer and improving the film layer preparation efficiency.

[0042] For example, the solution 3 adhering to the process roller 10 can also drip into the container 20, realizing the reuse of solution 3 and improving the utilization rate of solution 3.

[0043] In some embodiments, there are multiple process rollers 10, which are arranged sequentially along a second direction Y1. At least two of the process rollers 10 have their respective attachment surfaces 11 bearing the product 2. The second direction Y1 is perpendicular to the first direction X1. Exemplarily, both the first direction X1 and the second direction Y1 are horizontal directions.

[0044] By having the product 2 carried by the adhesion surfaces 11 of the multiple process rollers 10, the first surface 201 of the product 2 can contact the adhesion surfaces 11 of the multiple process rollers 10, thereby allowing the first surface 201 of the product 2 to contact the adhesion surfaces 11 of the process rollers 10 multiple times. This results in the solution 3 being applied to the first surface 201 of the product 2 multiple times, preventing some areas of the first surface 201 from being missed in coating, and further improving the uniformity of the film layer prepared on the first surface 201 of the product 2.

[0045] In addition, by having multiple process rollers 10 jointly support the product 2, multi-point support for the product 2 is achieved, which improves the stability of the product 2.

[0046] In some embodiments, such as Figure 3 As shown, the process roller 10 includes a process roller body 110 and a flexible film layer 120. The process roller body 110 can be a cylindrical structure, a rod-shaped structure, or the like. The flexible film layer 120 can be made of elastic materials such as rubber or sponge.

[0047] The process roller body 110 extends along a first direction X1 and has a side extending along the first direction X1. The process roller body 110 is rotatable about an axis parallel to the first direction X1.

[0048] The flexible film layer 120 wraps around the side of the process roller body 110, and the surface of the flexible film layer 120 away from the side of the process roller body 110 forms an adhesion surface 11.

[0049] By setting a flexible film layer 120, the adhesion surface 11 can elastically contact the first surface 201 of the product 2, which facilitates better adhesion between the adhesion surface 11 and the first surface 201 of the product 2, thereby improving the uniformity of the solution 3 adhering to the first surface 201, and further improving the uniformity of the film layer prepared on the first surface 201.

[0050] In some embodiments, the attachment surface 11 of the process roller 10 can be a rough surface, a mirror surface, or a surface with micro-pits. The process roller 10 can be a rigid roller or a flexible roller.

[0051] In some embodiments, such as Figure 5 As shown, product 2 also has a second surface 202 disposed opposite to the first surface 201. The film preparation apparatus 1 also includes at least one pressure roller 30. The pressure roller 30 may include a cylindrical structure, a rod-shaped structure, or the like.

[0052] The pressure roller 30 is arranged adjacent to the process roller 10 and extends along the first direction X1. It has an extrusion surface 31 extending along the first direction X1. The pressure roller 30 can rotate about an axis parallel to the first direction X1.

[0053] Product 2 can be disposed between adjacent pressure roller 30 and process roller 10, and extrusion surface 31 can roll contact with second surface 202 and apply pressure to product 2 toward adhesion surface 11.

[0054] For example, the pressure roller 30 and the process roller 10 are arranged at a distance in the vertical direction. The process roller 10 is located below the product 2, and the pressure roller 30 is located above the product 2.

[0055] By setting up the pressure roller 30, the extrusion surface 31 of the pressure roller 30 applies pressure to the product 2 toward the adhesion surface 11, which improves the adhesion between the process roller 10 and the product 2, thereby further improving the uniformity of film preparation.

[0056] In some embodiments, the film preparation apparatus 1 further includes a feeding assembly 40. The feeding assembly 40 is configured to carry the product 2 and transport the product 2 to the process roller 10, thereby realizing automatic feeding of the process roller 10 and improving the automation level of the film preparation apparatus 1.

[0057] For example, the feeding assembly 40 can be a belt drive assembly that supports and transports the product 2 via a conveyor belt. For example, the feeding assembly 40 can be a combination of a chain drive assembly and rollers, where the chain drive drives the rollers to rotate, and then the rollers support and transport the product 2. For example, the feeding assembly 40 can also be a linear module that supports and transports the product 2 via sliders on the linear module. The specific structure of the feeding assembly 40 can be selected according to actual needs, and this application does not impose specific limitations.

[0058] Figure 6 The diagram shown is a schematic diagram of a film preparation apparatus provided in another embodiment of this application. Figure 7 The diagram shown is a schematic diagram of a film preparation apparatus provided in another embodiment of this application. Figure 8 The diagram shown is a schematic diagram of a film preparation apparatus provided in another embodiment of this application. Figure 9 The diagram shown is a schematic representation of a film preparation apparatus provided in another embodiment of this application. In some embodiments, such as Figures 6 to 9 As shown, the feeding assembly 40 moves the product 2 along the third direction X2 to the process roller 10. Along the third direction X2, the vertical height of the surface of the feeding assembly 40 that contacts the product 2 increases, so that the vertical height of one of the products 2 located on the feeding assembly 40 gradually increases along the third direction X2, thereby causing the product 2 to first move to the top of the process roller 10. As the product 2 moves along the third direction X2, the product 2 falls from the top of the process roller 10 onto the upper surface of the process roller 10, so that the lower surface of the product 2 directly contacts the solution 3 on the upper surface of the process roller 10, thereby avoiding contamination of the side of the product 2 by the solution 3 on the process roller 10, and thus avoiding contamination of the upper surface of the product 2 by the solution 3 on the process roller 10.

[0059] In some embodiments, the feeding assembly 40 includes a plurality of feeding rollers 41. The plurality of feeding rollers 41 are arranged sequentially along a third direction X2. The feeding rollers 41 are capable of rotation, configured to carry the product 2, and transport the product 2 to the process roller 10 by rotation. Along the third direction X2, the vertical height of the geometric center of the plurality of feeding rollers 41 increases sequentially.

[0060] For example, such as Figures 6 to 9 As shown, three feeding rollers 41 are illustrated. The vertical height of the geometric center of the three feeding rollers 41 increases sequentially along the third direction X2, so that the vertical height of the product 2 located on the three feeding rollers 41 gradually increases along the third direction X2, thereby avoiding contamination of the side and top surfaces of the product 2 by the solution 3 on the process roller 10.

[0061] In some embodiments, the feeding assembly 40 further includes at least one transition roller 42. The transition roller 42 is disposed between the feeding roller 41 and the process roller 10. The transition roller 42 is located above the container 20, and the solution 3 on the transition roller 42 can enter the receiving chamber 21 through the opening 22.

[0062] In practical applications, when product 2 is supported by both transition roller 42 and process roller 10, after solution 3 adheres to the first surface 201 of product 2, solution 3 may flow back to transition roller 42 along the first surface 201. Solution 3 on transition roller 42 can drip into container 20, thereby recovering solution 3 and further improving the utilization rate of solution 3.

[0063] For example, the height of the upper surface of the transition roller 42 is greater than or equal to the height of the upper surface of the feed roller 41 adjacent to the transition roller 42.

[0064] For example, such as Figures 6 to 9 The diagram illustrates the feeding process and film preparation process for Product 2. For example, as shown... Figure 6 As shown, product 2 is supported by three feeding rollers 41, the center of gravity of product 2 is located on the three feeding rollers 41, and the front end of product 2 in the direction of movement is located above the transition roller 42. Figure 7 As shown, product 2 is supported by two feeding rollers 41 and one transition roller 42. The center of gravity of product 2 is located on the two feeding rollers 41, and the front end of product 2 in the direction of movement is located above the process roller 10. Figure 8 As shown, product 2 is supported by two feeding rollers 41, a transition roller 42, and a process roller 10. The center of gravity of product 2 is located between the feeding rollers 41 and the transition roller 42. The front end of product 2 falls onto the process roller 10 in the direction of movement, thereby preventing the sides and top surface of product 2 from being contaminated by the solution 3 on the transition roller 42 and the process roller 10. Figure 9 As shown, product 2 is supported by transition roller 42 and multiple process rollers 10, the center of gravity of product 2 is located on the process rollers 10, and a film layer is prepared on the first surface 201 of product 2.

[0065] In some embodiments, such as Figure 4 As shown, the film preparation apparatus 1 also includes a feeding assembly 50. The feeding assembly 50 is configured to carry the product 2 and receive the product 2 carried by the process roller 10, thereby realizing automatic feeding of the process roller 10 and further improving the automation level of the film preparation apparatus 1.

[0066] In some embodiments, the feeding assembly 50 drives the product 2 to transport the product 2 along a third direction X2. The feeding assembly 50 includes a plurality of feeding rollers 51. The plurality of feeding rollers 51 are arranged sequentially along the third direction X2. The feeding rollers 51 are rotatable, configured to carry the product 2, and transport the product 2 by rotation.

[0067] Figure 10 The diagram shown is a structural schematic of a feeding roller provided in one embodiment of this application. Exemplarily, as... Figure 10As shown, the lower surface of product 2 has a first end 203 and a second end 204 facing each other. The feed roller 51 includes two carrying sections 511 and a connecting section 512. The two carrying sections 511 are respectively configured to carry the first end 203 and the second end 204 of product 2. The connecting section 512 connects the two carrying sections 511, and the diameter of the connecting section 512 is smaller than the diameter of the carrying sections 511. Thus, by carrying product 2 through the two carrying sections 511, contact between the feed roller 51 and the area between the first end 203 and the second end 204 of product 2 is avoided, thereby reducing the impact of the feed roller 51 on the film layer of the first surface 201 of product 2.

[0068] In some embodiments, the two carrier segments 511 make line contact or point contact with the first end 203 and the second end 204 of the product 2, respectively, thereby further reducing the contact area between the carrier segments 511 and the first end 203 and the second end 204 of the product 2, thereby further reducing the damage to the film layer on the lower surface of the product 2 by the feed roller 51.

[0069] In some embodiments, the diameter of the support section 511 gradually decreases along the direction from the support section 511 to the connecting section 512. In other words, the support section 511 can be a frustum, and the side of the frustum forms point contact with the product 2, further reducing the contact area between the support section 511 and the product 2, thereby further reducing the impact of the feed roller 51 on the film layer of the first surface 201 of the product 2.

[0070] In some embodiments, the film preparation apparatus 1 further includes a drying assembly 60. The drying assembly 60 is disposed adjacent to the process roller 10 and is configured to provide heat energy to the process roller 10, thereby accelerating the formation of a film layer from the solution 3 on the first surface 201 of the product 2.

[0071] For example, the drying assembly 60 may be a hot air blower that provides heat to the process roller 10 by blowing hot air onto the process roller 10. For example, the drying assembly 60 may be a heating wire or heating tube that provides heat to the process roller 10 by heating the gas surrounding the process roller 10.

[0072] In some embodiments, the film preparation apparatus 1 further includes a housing 70. The housing 70 has a receiving space 71 and an air inlet 72 and an air outlet 73 communicating with the receiving space 71. The process roller 10 is disposed in the receiving space 71, and the product 2 can be placed in the receiving space 71. Impurity gas can flow out of the receiving space 71 from the air outlet 73, and inert gas can flow into the receiving space 71 from the air inlet 72, thereby filling the receiving space 71 with inert gas and preventing the solution 3 from reacting with the impurity gas.

[0073] For example, the feeding roller 41, the transition roller 42, and the unloading roller 51 may also be disposed in the receiving space 71. For example, the drying assembly 60 may also be disposed in the receiving space 71.

[0074] For example, solution 3 is a perovskite solution. Perovskite solutions are highly radioactive and easily volatilize. By providing the housing 70, the volatilization of solution 3 can be reduced, thereby reducing the impact of the radiation from solution 3 on the user.

[0075] In some embodiments, such as Figure 4 and Figures 6 to 9 As shown, the film preparation apparatus 1 further includes a support assembly 80 and at least one first drive assembly 90. The support assembly 80 is configured to support the process roller 10, and the process roller 10 is rotatably connected to the support assembly 80 about an axis parallel to the first direction X1. The first drive assembly 90 is connected to the process roller 10 and is configured to drive the process roller 10 to rotate about an axis parallel to the first direction X1.

[0076] For example, the support assembly 80 may be a support column, bracket, support plate, or other structure. The support assembly 80 may also support the feed roller 41, the transition roller 42, and the discharge roller 51. For example, the support assembly 80 and the first drive assembly 90 may also be disposed in the receiving space 71.

[0077] The first drive component 90 can be a combination of a motor and a transmission structure. The transmission structure can be a belt drive, chain drive, gear drive, screw and nut drive, etc., and this application does not make specific limitations. For example, the motor can be a servo motor, which reduces the energy consumption of the film preparation apparatus 1.

[0078] This application also provides a method for preparing a film layer, which is applied to the film layer preparation apparatus of any of the above embodiments. Figure 11 The diagram shown is a schematic flow chart of a film preparation method provided in an embodiment of this application. Figure 11 As shown, the film preparation method includes the following steps.

[0079] Step 1110: Rotate the process roller so that the solution in the container adheres to the adhesion surface of the process roller.

[0080] Step 1120: Place the product on the adhesion surface of the process roller, so that the adhesion surface rolls into contact with the first surface of the product, so that at least a portion of the solution adhering to the adhesion surface can adhere to the first surface.

[0081] For example, the product can be transported from the loading assembly to the process roller, and then from the process roller to the unloading assembly.

[0082] By utilizing the rotation of a process roller, a solution in a container is adhered to an adhesion surface. The rotation of the process roller also achieves rolling contact with the first surface of the product, thereby adhering at least a portion of the solution from the adhesion surface to the first surface, thus forming a film layer on the first surface of the product. This film layer preparation method is simple and low-cost. Furthermore, the solution adhering to the process roller can drip back into the container, enabling solution reuse and improving solution utilization. In addition, the film layer can be formed on the first surface of the product simply by rotating the process roller, resulting in high film layer preparation efficiency.

[0083] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0084] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0085] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0086] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0087] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A membrane preparation apparatus, characterized in that, include: At least one process roller extends along a first direction and has an attachment surface extending along the first direction. The process roller is rotatable about an axis parallel to the first direction. The attachment surface is configured to carry a product and contact a first surface of the product. A container is disposed below the process roller. The container has a receiving chamber and an upward-facing opening, the opening communicating with the receiving chamber, the receiving chamber being capable of holding a solution. Wherein, at least a portion of the attachment surface extends into the receiving chamber so that at least a portion of the attachment surface can adhere to the solution; wherein, the attachment surface is capable of rolling contact with the first surface so that at least a portion of the solution attached to the attachment surface can adhere to the first surface.

2. The film preparation apparatus according to claim 1, characterized in that, The process roller includes: The process roller body extends along the first direction and has a side extending along the first direction. The process roller body is rotatable about an axis parallel to the first direction. A flexible film layer is wrapped around the side of the process roller body, and the surface of the flexible film layer away from the side of the process roller body forms the adhesion surface.

3. The film preparation apparatus according to claim 1, characterized in that, The product also has a second surface disposed opposite to the first surface; The film preparation apparatus further includes: At least one pressure roller is disposed adjacent to the process roller, extends along the first direction, and has an extrusion surface extending along the first direction. The pressure roller is rotatable about an axis parallel to the first direction. The product can be disposed between the adjacent pressure roller and the process roller, the extrusion surface can roll contact with the second surface, and apply pressure to the product toward the adhesion surface.

4. The film preparation apparatus according to claim 1, characterized in that, The number of process rollers is multiple, and the multiple process rollers are arranged sequentially along the second direction. The attachment surfaces of at least two of the multiple process rollers jointly support the product. The second direction is perpendicular to the first direction.

5. The film preparation apparatus according to any one of claims 1 to 4, characterized in that, Also includes: A feeding assembly is configured to carry the product and transport the product to the process roller; And / or, The feeding assembly is configured to carry the product and receive the product carried by the process roller.

6. The film preparation apparatus according to claim 5, characterized in that, When the film preparation apparatus includes the feeding assembly, the feeding assembly drives the product to move along a third direction to the process roller; Along the third direction, the vertical height of the surface of the feeding assembly that contacts the product increases, so that the vertical height of one of the products located on the feeding assembly gradually increases along the third direction.

7. The film preparation apparatus according to claim 6, characterized in that, The feeding assembly includes: Multiple feeding rollers are arranged sequentially along the third direction. The feeding rollers are capable of rotation and are configured to carry the product and transport the product to the process rollers through rotation. Along the third direction, the vertical height of the geometric centers of the plurality of feeding rollers increases sequentially.

8. The film preparation apparatus according to claim 7, characterized in that, The feeding assembly also includes: At least one transition roller is disposed between the feeding roller and the process roller; The transition roller is located above the container, and the solution on the transition roller can enter the containment chamber through the opening.

9. The film preparation apparatus according to claim 5, characterized in that, When the film preparation apparatus includes the feeding assembly, the feeding assembly carries the product along a third direction; The feeding assembly includes: Multiple feeding rollers are arranged sequentially along the third direction. The feeding rollers are capable of rotation and are configured to carry the product and transport the product by rotation. The lower surface of the product has a first end and a second end opposite to each other, and the feeding roller includes: Two bearing sections are respectively configured to bear the first end of the product and the second end of the product; A connecting segment connects the two load-bearing segments, wherein the diameter of the connecting segment is smaller than the diameter of the load-bearing segments.

10. The film preparation apparatus according to claim 9, characterized in that, The two bearing segments are in line contact or point contact with the first end and the second end of the product, respectively.

11. The membrane preparation apparatus according to any one of claims 1 to 4, characterized in that, The film preparation apparatus further includes: A drying assembly, disposed adjacent to the process roller, is configured to provide heat energy to the process roller; And / or, The film preparation apparatus further includes: The housing has a receiving space and an air inlet and an air outlet communicating with the receiving space. The process roller is disposed in the receiving space, and the product can be placed in the receiving space. Impurity gas can flow out of the receiving space from the air outlet, and inert gas can flow into the receiving space from the air inlet. And / or, The film preparation apparatus further includes: A support assembly is configured to support the process roller, and the process roller is rotatably connected to the support assembly about an axis parallel to the first direction; At least one first drive component, connected to the process roller, is configured to drive the process roller to rotate about an axis parallel to the first direction.

12. The membrane preparation apparatus according to any one of claims 1 to 4, characterized in that, The solution includes a perovskite solution, which forms a perovskite film after being attached to the first surface.

13. A method for preparing a film layer, characterized in that, Applied to the film preparation apparatus according to any one of claims 1 to 12; wherein, the film preparation method comprises: The process roller is rotated so that the solution in the container adheres to the adhesion surface of the process roller; The product is placed on the adhesion surface of the process roller, and the adhesion surface rolls into contact with the first surface of the product, so that at least a portion of the solution adhering to the adhesion surface can adhere to the first surface.

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