Purification device and purification method

Abstract

The invention provides a purification device and a purification method. The purification device comprises a shell, the shell is internally provided with a containing cavity, the first side of the shell is provided with a first opening, and the first opening communicates with the containing cavity; the purification assembly is located on one side of the shell and used for purifying the first liquid flowing out of the first opening; the first storage assembly is used for storing second liquid which flows out after being purified by the purification assembly; the carrying platform is used for carrying the first storage assembly. The perovskite precursor solution can be automatically or mechanically purified, and the risk of throwing and dripping when the perovskite precursor solution is manually filtered can be avoided, so that the health is prevented from being harmed. And meanwhile, the platform deck can receive the scattered second liquid, so that the harm of the second liquid to the environment is avoided.

Description

Technical Field

[0001] This application relates to the field of purification technology, specifically to purification devices and purification methods. Background Technology

[0002] The development of semiconductor technology plays a crucial role in the advancement of the electronics industry. Perovskite, as a novel semiconductor, possesses numerous advantages, including long carrier diffusion lengths, high defect tolerance, tunable band gaps, and large absorption coefficients. Compared to traditional organic and inorganic semiconductors, perovskite preparation processes are simpler and less expensive, giving it a significant advantage in the semiconductor field. To date, the efficiency of perovskite solar cells has exceeded 26%, and the time to energy (T95) has surpassed 1,000 hours. As an emerging semiconductor material, perovskite has demonstrated enormous potential. However, current solar cells still face some challenges. Summary of the Invention

[0003] In view of this, embodiments of this application provide a purification device and a purification method.

[0004] The first aspect of this application provides a purification device, comprising: The housing has a receiving cavity, and a first opening on a first side of the housing is connected to the receiving cavity. A purification component, located on one side of the housing, is used to purify the first liquid flowing out from the first opening; The first storage component is used to store the second liquid that flows out after being purified by the purification component; Platform, used to support the first storage component.

[0005] In one embodiment, during use, the platform is located on the side of the first storage component away from the purification component; Preferably, the material of the stage near the first storage component includes Teflon; Preferably, the stage includes a first support platform and a protective layer, the protective layer being located on the side of the first support platform near the first storage component, and the material of the protective layer including Teflon; Preferably, during use, the first storage component and the purification component are located on the same side of the housing; Preferably, during use, the first storage component is located on the side of the purification component away from the housing.

[0006] In one embodiment, the first liquid comprises a perovskite precursor solution; Preferably, the perovskite precursor solution includes a solvent, which includes at least one of N,N-dimethylformamide, dimethyl sulfoxide, and N-methylpyrrolidone; Preferably, the material of the housing near the cavity surface includes Teflon.

[0007] In one embodiment, it further includes: a support member located on the same side of the housing as the purification component; Preferably, the support member includes a first sub-support member and a second sub-support member, the second sub-support member being located on at least a portion of the periphery of the first sub-support member and extending in a direction away from the housing; and / or, the second sub-support member being located on the side of the first sub-support member opposite to the housing and extending in a direction away from the housing. Preferably, the second sub-support member and the first sub-support member enclose a receiving space. In use, the platform is located within the receiving space, and the end of the second sub-support member facing away from the shell is flush with the end of the platform facing away from the shell. Preferably, at least one end of the platform near the second sub-support extends toward the first sub-support; Preferably, at least a portion of the periphery of the stage is in contact with the surface of the second sub-support near the stage.

[0008] In one embodiment, the first sub-support member has a through groove in which the purification component is located; Preferably, the purification component includes a filter element and a liquid outlet, with the liquid outlet located on the side of the filter element away from the housing, from which the second liquid flows out; Preferably, the filter element includes at least one of needle filter element, pleated filter element and depth filter element; Preferably, the filter element is made of at least one of nylon, polytetrafluoroethylene, polyethersulfone, mixed cellulose esters, and polypropylene; Preferably, the pore size of the filter element is greater than or equal to 0.01 μm and less than or equal to 1 μm.

[0009] In one embodiment, it further includes: a second storage component for storing the liquid to be purified and / or the washing liquid, the second storage component being connected to the housing; Preferably, the purification device further includes a first pump, and the second storage component is connected to the housing via the first pump; Preferably, the second side of the housing has a second opening, the first side and the second side are disposed opposite to each other, the second opening is connected to the receiving cavity, and the first pump is connected to the second opening; Preferably, the purification device further includes a support member located on the same side of the housing as the purification component; The first pump and the housing are located on the same side of the support, and / or the second storage assembly and the housing are located on the same side of the support; Preferably, the first pump is located on the side of the second storage component away from the support.

[0010] In one embodiment, it further includes: a second pump, the second pump including a sliding assembly adapted to slide in a receiving cavity to push the first liquid toward the purification assembly; Preferably, the purification device further includes a support member located on the same side of the housing as the purification component; The second pump also includes a drive assembly located on the side of the support near the housing; the drive assembly is used to drive the sliding assembly to slide within the receiving cavity; Preferably, the second pump is a down-pressure pump.

[0011] In one embodiment, it further includes: a vibration generating assembly located on at least a portion of the periphery of the housing, the vibration generating assembly being used to clean the sidewall of the housing near the receiving cavity; Preferably, the vibration generating component surrounds the housing; Preferably, the vibration generating component is an ultrasonic oscillator.

[0012] A second aspect of this application provides a purification method using the aforementioned purification device, comprising: The first liquid inside the housing cavity flows out through the first opening; The first liquid flowing out of the first opening is purified using a purification component; The first storage component is used to store the second liquid that flows out after being purified by the purification component. The first storage component is located on the side of the platform close to the purification component.

[0013] In one embodiment, the step of the first liquid flowing out of the housing cavity through the first opening includes: The sliding assembly of the second pump is used to push the first liquid out through the first opening; Preferably, the step of using the sliding assembly of the second pump to push the first liquid out through the first opening includes: The sliding assembly is driven by the second pump to slide within the receiving cavity, and the sliding assembly pushes the first liquid out through the first opening; Preferably, before the first liquid in the housing cavity flows out through the first opening, the process further includes: The first pump is used to deliver the liquid to be purified, stored in the second storage component, into the housing cavity; Preferably, after the liquid to be purified in the second storage component has been filtered, it further includes: The side walls of the housing near the receiving cavity and the purification components are washed; Preferably, the step of washing the sidewalls of the housing near the receiving cavity and the purification components includes: The first pump is used to deliver the washing liquid stored in the second storage component to the receiving cavity of the housing; Turn on the vibration generator; The sliding component is driven by a drive component to slide, pushing the washing liquid out through the outlet.

[0014] The purification device provided in the embodiments of this application can purify a first liquid, such as a perovskite precursor solution, facilitating automated or mechanized purification of the perovskite precursor solution. This avoids the risk of spillage and leakage during manual filtration of the perovskite precursor solution, thereby preventing health hazards. Simultaneously, the platform can catch any spilled second liquid, preventing it from harming the environment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the purification device in one embodiment of this application.

[0016] Figure 2 This is a schematic diagram of the purification device in another embodiment of this application.

[0017] Figure 3 This is a schematic diagram of the purification device in another embodiment of this application.

[0018] Figure 4 This is a top view of the housing structure in one embodiment of this application.

[0019] Figure 5 This is a schematic diagram of the purification device in another embodiment of this application.

[0020] Figure 6 This is a schematic diagram of the purification device in another embodiment of this application.

[0021] Figure 7 This is a schematic diagram of the purification device in another embodiment of this application.

[0022] Figure 8 This is a schematic diagram of the purification device in another embodiment of this application.

[0023] Figure 9 This is a schematic diagram of the purification device in another embodiment of this application.

[0024] Figure 10 This is a schematic diagram of the purification device in another embodiment of this application.

[0025] Figure 11 This is a schematic diagram of the purification device in another embodiment of this application.

[0026] Figure 12 This is a top view of the housing and vibration generating assembly in one embodiment of this application.

[0027] Figure 13 This is a schematic diagram of a purification method using a purification device in one embodiment of this application. Detailed Implementation

[0028] 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.

[0029] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented even without certain specific details. In some instances, methods and means well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0032] The inventors of this application have discovered that in existing perovskite industry technologies, lead-based perovskite precursor solutions need to be filtered to remove impurities before use. This filtration is typically done manually, often using syringe filters. Operators are easily pricked by the needles. Furthermore, the solvents in lead-based perovskite precursor solutions are often N,N-dimethylformamide, dimethyl sulfoxide, or N-methylpyrrolidone, which are volatile, have a pungent odor, damage the respiratory tract, and seriously harm human health.

[0033] In view of this, the first aspect of this application provides a purification device, referring to Figure 1 The schematic diagram of the purification device shown includes: a housing 100, a purification component 200, a first storage component 300, and a platform 400.

[0034] Optionally, the housing 100 is provided with a receiving cavity 110, and the first side of the housing 100 has a first opening 101, which is connected to the receiving cavity 110.

[0035] For example, the housing 100 can be cylindrical or rectangular, and those skilled in the art can make a flexible choice according to actual needs, as long as the requirements are met. For example, the housing 100 can be cylindrical.

[0036] Understandably, the containment cavity 110 can contain the lead-based perovskite precursor solution to facilitate subsequent purification of the lead-based perovskite precursor solution.

[0037] Optionally, the purification component 200 is located on one side of the housing 100 and is used to purify the first liquid flowing out from the first opening 101. For example, the first liquid may be a lead-based perovskite precursor solution to be filtered.

[0038] For example, the purification component 200 can be located on any side of the housing 100, such as the lower side of the housing 100 (see details). Figure 1 It can also be located on the left side of the housing 100 (see details). Figure 2 (It can also be located on the right side of the housing 100, etc.)

[0039] For example, a perovskite precursor solution may include the following components: a metal halide salt, a solvent, and optionally, additives. The metal halide salt is a key component of the perovskite precursor solution. Common examples include lead iodide (PbI₂) and lead bromide (PbBr₂), which provide the metal cations (Pb) in the perovskite structure. 2+ In organic-inorganic hybrid perovskites, there is also methylammonium (MA). + CH3NH3 + ), formamidin (FA) + HC (NH2)2 + Metal halide salts, such as methylammonium iodide (CH3NH3I) and formamidinium bromide (HC(NH2)2Br), are the corresponding halide salts of organic cations. These components are the basic materials for forming the perovskite crystal structure, and their proportions and interactions in solution have a significant impact on the final structure and properties of the perovskite. To ensure that the metal halide salts can be uniformly mixed and participate in the reaction, a suitable solvent is required. Commonly used solvents include N,N-dimethylformamide (DMF), dimethyl sulfoxide (DMSO), and N-methylpyrrolidone (NMP). These solvents can dissolve metal halide salts and play a certain role in regulating the crystallization process of perovskite. For example, DMF can regulate the crystallization rate by forming coordination compounds with metal halide salts, which is beneficial for forming high-quality perovskite films. To improve the performance of perovskite films, additives are sometimes added. For example, some small organic molecule additives, such as chlorobenzene (CB), can act as antisolvents during the perovskite crystallization process, promoting rapid crystallization of the perovskite film, reducing defects, and improving the film coverage and crystallinity. There are also some additives that can modulate the energy level structure of perovskites and enhance their photoelectric properties.

[0040] For example, impurities in perovskite precursor solutions mainly include metal ion impurities, organic impurities, and particulate impurities. Other metal ion impurities may be introduced during the acquisition or preparation of raw materials. For instance, the lead salt raw material may contain small amounts of calcium (Ca). 2+ ), iron (Fe)3+ ), copper (Cu) 2+ Impurity ions such as lead (Pb) may replace lead ions (Pb) in the perovskite structure. 2+ Impurities can alter the crystal structure and electrical properties of perovskite. For example, the introduction of impurity ions can change the band gap of perovskite, affecting its light absorption and charge transport, thereby reducing the photoelectric conversion efficiency of perovskite solar cells. Organic impurities include unreacted organic reagents, such as residual methylamine (CH3NH2) that may remain during the synthesis of methylammonium iodide (CH3NH3I). These organic impurities can affect the crystallization process of perovskite, leading to an increase in crystal defects. For example, the presence of moisture may promote hydrolysis of perovskite, destroying its crystal structure, and may increase defects such as pinholes and pores in the perovskite film during the preparation process. Particulate impurities include foreign particulate impurities such as dust. These particulate impurities may become nucleation centers during the perovskite film preparation process, leading to uneven film growth, or may be encapsulated inside the perovskite film, increasing defects and affecting its photoelectric performance and stability. Exemplarily, impurities that can be filtered out include particulate impurities and undissolved macromolecular raw materials.

[0041] Optionally, the first storage component 300 is used to store the second liquid that flows out after purification by the purification component 200. For example, in use, the first storage component 300 is located on the side of the purification component 200 away from the housing 100, and is used to store the second liquid that flows out after purification by the purification component 200. For example, the second liquid may be the liquid after removing impurities from the perovskite precursor solution.

[0042] For example, refer to Figure 1 The purification component 200 is located below the housing 100, and the first storage component 300 is located on the side of the purification component 200 away from the housing 100.

[0043] For example, refer to Figure 2 The purification component 200 is located on the side of the housing 100, the first storage component 300 is located on the same side of the housing 100 as the purification component 200, and the first storage component 300 is located below the purification component 200.

[0044] In a preferred embodiment, the purification component 200 is located below the housing 100, and the first storage component 300 is located on the side of the purification component 200 away from the housing 100. Under the action of gravity, the first liquid is more likely to flow out of the first opening, saving energy.

[0045] Optionally, the platform 400 is used to support the first storage component 300. For example, in use, the platform 400 is located on the side of the first storage component 300 opposite to the purification component 200.

[0046] For example, the platform 400 is located below the first storage component 300. In addition to supporting the first storage component 300, the platform 400 can also catch second liquids spilled from the first storage component 300, or catch second liquids that flow out of the purification component 200 but were not collected by the first storage component 300, preventing the second liquids from dripping directly onto the ground or onto people, and avoiding corrosion of the ground or harm to human health.

[0047] The purification device provided in the embodiments of this application can purify a first liquid, such as a perovskite precursor solution. This facilitates automated or mechanized purification of the perovskite precursor solution, avoiding the risk of spillage and leakage during manual filtration of the perovskite precursor solution, and thus preventing harm to health.

[0048] In one embodiment, the material of the end of the platform 400 near the first storage component 300 includes Teflon. Since the second liquid is corrosive, when the second liquid drips or spills onto the surface of the platform 400, it helps to prevent corrosive halides from corroding the platform 400, thus extending the service life of the purification device.

[0049] Optionally, refer to Figure 3 The schematic diagram of the purification device shown illustrates that the platform 400 includes a first support platform 410 and a protective layer 420. The protective layer 420 is located on the side of the first support platform 410 near the first storage component 300, and the material of the protective layer 420 includes Teflon. Therefore, the protective layer 420 has excellent corrosion resistance and helps reduce the cost of the purification device.

[0050] Optionally, the material of the housing 100 near the receiving cavity surface includes Teflon. For example, see reference... Figure 4 The diagram shows a top view of the housing 100, which includes an inner liner 120 and an outer shell 130. The inner liner 120 encloses a receiving cavity 110, and the outer shell 130 is located on the outer periphery of the inner liner 120 to protect it. The inner liner 120 is made of Teflon. A first opening 101 is formed in the inner liner 120. This reduces the damage to the housing caused by corrosive halides in the perovskite material, extending the service life of the equipment.

[0051] In one embodiment, refer to Figure 5 and Figure 6 The schematic diagram of the purification device shown includes a support member 500, which is located on the same side of the housing 100 as the purification component 200.

[0052] Optionally, refer to Figure 5The support member 500 includes a first sub-support member 510 and a second sub-support member 520, the second sub-support member 520 being located on at least a portion of the periphery of the first sub-support member 510 and extending in a direction away from the housing 100.

[0053] Optionally, refer to Figure 6 The second sub-support 520 is located on the side of the first sub-support 510 away from the housing, and the second sub-support 520 extends in a direction away from the housing 100.

[0054] Optionally, refer to Figure 7 A portion of the second sub-support 520 is located on a portion of the periphery of the first sub-support 510, and a portion of the second sub-support 520 is located on the side of the first sub-support 510 away from the housing. The second sub-support 520 extends in a direction away from the housing 100.

[0055] It is understandable that the aforementioned support 500 can support the shell 100, which facilitates the flow of the first liquid under the action of gravity, helps to save energy consumption, and rationally optimizes the spatial position between various components.

[0056] Optionally, the second sub-support 520 and the first sub-support 510 enclose a receiving space 501. In use, the platform 400 is located within the receiving space 501, and the end of the second sub-support 520 facing away from the housing 100 is flush with the end of the platform 400 facing away from the housing 100. This facilitates the rational optimization of space, allowing the second liquid to flow into the first storage component 300 under the action of gravity, thus saving energy.

[0057] Optionally, refer to Figure 8 The platform 400 extends towards the first sub-support 510 from at least one end near the second sub-support 520. Therefore, since the second liquid may splash when dripping, or inevitably during the transport of the first storage component 300, the extension of the platform 400 towards the first sub-support 510 increases the contact area with the second liquid, reducing the possibility of corrosion of the support 500 by the second liquid.

[0058] Optionally, at least a portion of the periphery of the stage 400 contacts the surface of the second sub-support 520 adjacent to the stage 400. For example, the stage 400 and the second sub-support 520 can be fixed together, for example by welding or nailing, to reduce the size of the equipment.

[0059] In one embodiment, refer to Figure 8 The first sub-support member 510 has a through groove 511, in which the purification assembly 200 is located. This facilitates full utilization of each component and reduces the size of the equipment.

[0060] Optionally, refer to Figure 9 The purification component 200 includes a filter element 210 and a liquid outlet 220. The liquid outlet 220 is located on the side of the filter element 210 away from the housing 100, and the second liquid flows out from the liquid outlet 220.

[0061] Optionally, filter element 210 includes at least one of needle filter element, pleated filter element and depth filter element.

[0062] Optionally, the material of filter element 210 includes at least one of nylon, polytetrafluoroethylene, polyethersulfone, mixed cellulose ester and polypropylene.

[0063] Optionally, the pore size of the filter element 210 is greater than or equal to 0.01 μm and less than or equal to 1 μm, for example, it can be 0.01 μm, 0.1 μm, 0.2 μm, 0.4 μm, 0.6 μm, 0.8 μm or 1 μm, etc. This facilitates the thorough removal of impurities from the first liquid.

[0064] In one embodiment, refer to Figure 10 The schematic diagram of the purification device shown illustrates that the device further includes a second storage component 600 for storing the liquid to be purified and / or washing liquid. The second storage component 600 is connected to the housing 100. For example, the connection between the second storage component 600 and the housing 100 may include, but is not limited to, a connection via a conduit. The connection can be direct via a conduit or via a conduit connected by another device. For example, the purification device also includes a first pump 700, through which the second storage component 600 is connected to the housing 100. Thus, both ends of the first pump 700 are connected to conduits, and the two conduits are respectively connected to the second storage component 600 and the housing 100. The first pump 700 delivers the second storage component 600 into the receiving cavity 110 of the housing 100.

[0065] It is understandable that the liquid to be purified stored in the second storage component 600 has the same composition as the first liquid.

[0066] It is understandable that after the liquid to be purified in the second storage component 600 has been filtered, washing liquid can be added to the second storage component to facilitate the washing of the side wall of the housing 100 near the receiving cavity 110 and the purification component 200.

[0067] Optionally, the second side of the housing 100 has a second opening 102, the first side and the second side are disposed opposite to each other, the second opening 102 is connected to the receiving cavity 110, and the first pump 700 is connected to the second opening 102.

[0068] Optionally, the first pump 700 and the housing 100 are located on the same side of the support 500, and the second storage component 600 and the housing 100 are also located on the same side of the support 500. For example, the first pump 700 is located on the side of the second storage component 600 away from the support 500. This helps to reduce the size of the equipment and the height difference between the housing 100, the first pump 700, and the second storage component 600, facilitating the transport of the liquid to be purified and saving energy.

[0069] In one embodiment, the purification device further includes a second pump 800, which includes a sliding assembly 810 adapted to slide within the receiving cavity 110 to push the first liquid toward the purification assembly 200. This eliminates the need for manual delivery of the first liquid directly to the purification assembly 200, facilitating fully mechanical operation and reducing the potential harm of the liquid to be purified to human health.

[0070] Optionally, the second pump 800 further includes a drive assembly 820 located on the side of the support 500 near the housing 100. The drive assembly 820 is used to drive the sliding assembly 810 to slide within the receiving cavity 110. This helps to reduce the size of the equipment and the height difference between the drive assembly 820 and the sliding assembly 810, thus saving energy.

[0071] Optionally, the second pump 800 is a downpressure pump. For example, the pressure of gas can be used to drive the sliding assembly 810 to slide within the receiving cavity 110.

[0072] In one embodiment, refer to Figure 11 The schematic diagram of the purification device shown includes a vibration generating assembly 900 located on at least a portion of the periphery of the housing 100. The vibration generating assembly 900 is used to clean the sidewalls of the housing 100 near the receiving cavity 110. It is understood that some residual first liquid may remain on the sidewalls of the receiving cavity 110; cleaning the sidewalls of the receiving cavity 110 removes this first liquid, reducing the risk of contamination during secondary use. The vibration generated by the vibration generating assembly 900 facilitates the efficient removal of residual liquid from the tank.

[0073] For example, refer to Figure 12 The diagram shows a top view of the housing and vibration generating assembly 900, with the vibration generating assembly 900 surrounding the housing 100. For example, the housing 100 includes an inner liner 120 and an outer shell 130. The inner liner 120 encloses a receiving cavity 110. The vibration generating assembly 900 is located on the outer periphery of the inner liner 120, and the outer shell 130 is located on the outer periphery of the vibration generating assembly 900, serving to protect the inner liner 120. A first opening 101 is formed in the inner liner 120.

[0074] Optionally, the vibration generating component 900 is an ultrasonic oscillator. The ultrasonic waves generated by the vibration generating component 900 facilitate efficient cleaning of the sidewalls of the housing 100 near the receiving cavity 110.

[0075] For example, the housing 130, the support 500, and the first support platform 410 may be made of stainless steel.

[0076] The second aspect of this application provides a purification method using the aforementioned purification device, referring to... Figure 13 The diagram shows a purification method process, which includes the following steps.

[0077] S100: The first liquid in the housing cavity flows out through the first opening.

[0078] It should be noted that the shell, the receiving cavity, the first liquid, and the first opening are consistent with the previous description, and will not be repeated here.

[0079] In one embodiment, the step of the first liquid in the housing cavity flowing out through the first opening includes: using the sliding assembly of the second pump to push the first liquid out through the first opening.

[0080] Optionally, the step of using the sliding assembly of the second pump to push the first liquid out through the first opening includes: using the driving assembly of the second pump to drive the sliding assembly to slide within the receiving cavity, and the sliding assembly pushing the first liquid out through the first opening.

[0081] In one embodiment, before the first liquid in the housing cavity flows out through the first opening, the method further includes: using a first pump to deliver the liquid to be purified stored in the second storage component into the housing cavity.

[0082] S200: The first liquid flowing out from the first opening is purified using a purification component.

[0083] It should be noted that the purification components are the same as described above, and will not be repeated here.

[0084] S300: A first storage component is used to store the second liquid that flows out after being purified by the purification component. The first storage component is located on the side of the platform close to the purification component.

[0085] It should be noted that the second liquid, the first storage component, and the stage are the same as described above, and will not be repeated here.

[0086] Optionally, after the liquid to be purified in the second storage component has been filtered, the process further includes washing the side wall of the housing near the receiving cavity and the purification component.

[0087] For example, the step of washing the side wall of the housing near the receiving cavity and the purification component includes: using a first pump to deliver the washing liquid stored in the second storage component to the receiving cavity of the housing; activating the vibration generating component, using a drive component to drive the sliding component to slide, and pushing the washing liquid out through the outlet.

[0088] In one specific embodiment, the purification method comprises the following steps: 1. The perovskite precursor solution to be filtered in the second storage component is delivered to the housing cavity by the first pump. The driving component of the second pump (downward pump) applies downward pressure to the sliding component, causing the first liquid in the housing cavity to be filtered through the filter element and then flow out through the outlet. The first storage component collects the second liquid flowing out of the outlet. The filter element can be replaced by unscrewing the outlet mechanism. A platform is laid at the bottom of the housing space enclosed by the support. To avoid corrosion of the platform, Teflon material is selected as the material for the platform.

[0089] 2. After the perovskite precursor solution is filtered, the purification device can be automatically cleaned. The washing solvent is introduced into the second storage component, and the washing solvent is delivered to the containment chamber by the first pump. The surround ultrasonic oscillator is turned on and oscillated for 10-20 minutes. Then the filter element is removed, and the waste solvent after cleaning is discharged through the outlet by the pressure pump. The cycle is repeated 2-3 times, and the tank is cleaned without causing contamination of the filtered solution.

[0090] 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.

[0091] 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 purification device, characterized in that, include: A housing having a receiving cavity, and a first opening on a first side of the housing communicating with the receiving cavity; A purification component, located on one side of the housing, is used to purify the first liquid flowing out from the first opening; A first storage component is used to store the second liquid that flows out after being purified by the purification component; A platform for supporting the first storage component.

2. The purification device according to claim 1, characterized in that, In use, the platform is located on the side of the first storage component away from the purification component; Preferably, the material of the stage near the end of the first storage component includes Teflon; Preferably, the platform includes a first support platform and a protective layer, the protective layer being located on the side of the first support platform near the first storage component, and the material of the protective layer including Teflon; Preferably, during use, the first storage component and the purification component are located on the same side of the housing; Preferably, in use, the first storage component is located on the side of the purification component away from the housing.

3. The purification device according to claim 1, characterized in that, The first liquid comprises a perovskite precursor solution; Preferably, the perovskite precursor solution includes a solvent, the solvent including at least one of N,N-dimethylformamide, dimethyl sulfoxide and N-methylpyrrolidone; Preferably, the material of the housing near the surface of the receiving cavity includes Teflon.

4. The purification device according to claim 1, characterized in that, Also includes: The support member is located on the same side of the housing as the purification component; Preferably, the support member includes a first sub-support member and a second sub-support member, the second sub-support member being located on at least a portion of the periphery of the first sub-support member and extending in a direction away from the housing; and / or, the second sub-support member being located on the side of the first sub-support member opposite to the housing and extending in a direction away from the housing; Preferably, the second sub-support member and the first sub-support member enclose a receiving space. In use, the platform is located within the receiving space, and the end of the second sub-support member facing away from the housing is flush with the end of the platform facing away from the housing. Preferably, at least one end of the platform near the second sub-support extends toward the first sub-support; Preferably, at least a portion of the periphery of the platform is in contact with the surface of the second sub-support near the platform.

5. The purification device according to claim 4, characterized in that, The first sub-support has a through groove, and the purification component is located in the through groove; Preferably, the purification assembly includes a filter element and a liquid outlet, the liquid outlet being located on the side of the filter element opposite to the housing, and the second liquid flowing out from the liquid outlet; Preferably, the filter element includes at least one of needle filter element, pleated filter element and depth filter element; Preferably, the material of the filter element includes at least one selected from nylon, polytetrafluoroethylene, polyethersulfone, mixed cellulose esters, and polypropylene; Preferably, the pore size of the filter element is greater than or equal to 0.01 μm and less than or equal to 1 μm.

6. The purification device according to claim 1, characterized in that, It also includes: a second storage component for storing the liquid to be purified and / or the washing liquid, the second storage component being connected to the housing; Preferably, the purification device further includes a first pump, and the second storage component is connected to the housing via the first pump; Preferably, the second side of the housing has a second opening, the first side and the second side are disposed opposite to each other, the second opening is connected to the receiving cavity, and the first pump is connected to the second opening; Preferably, the purification device further includes a support member located on the same side of the housing as the purification component; The first pump and the housing are located on the same side of the support, and / or the second storage assembly and the housing are located on the same side of the support; Preferably, the first pump is located on the side of the second storage component away from the support.

7. The purification device according to claim 1, characterized in that, Also includes: A second pump, the second pump including a sliding assembly adapted to slide within the receiving cavity to push the first liquid toward the purification assembly; Preferably, the purification device further includes a support member located on the same side of the housing as the purification component; The second pump further includes a drive assembly located on the side of the support member near the housing; the drive assembly is used to drive the sliding assembly to slide within the receiving cavity; Preferably, the second pump is a down-pressure pump.

8. The purification device according to claim 1, characterized in that, Also includes: A vibration generating assembly is located on at least a portion of the periphery of the housing, the vibration generating assembly being used to clean the sidewall of the housing near the receiving cavity; Preferably, the vibration generating assembly surrounds the housing; Preferably, the vibration generating component is an ultrasonic oscillator.

9. A purification method using the purification device according to any one of claims 1 to 8, characterized in that, include: The first liquid inside the housing cavity flows out through the first opening; The first liquid flowing out of the first opening is purified using a purification component; A first storage component is used to store the second liquid that flows out after being purified by the purification component. The first storage component is located on the side of the platform close to the purification component.

10. The purification method according to claim 9, characterized in that, The step of the first liquid flowing out of the housing cavity through the first opening includes: The sliding assembly of the second pump is used to push the first liquid out through the first opening; Preferably, the step of using the sliding assembly of the second pump to push the first liquid out through the first opening includes: The sliding assembly is driven by the second pump to slide within the receiving cavity, and the sliding assembly pushes the first liquid out through the first opening; Preferably, before the first liquid in the receiving cavity of the housing flows out through the first opening, the method further includes: The first pump is used to deliver the liquid to be purified, stored in the second storage component, into the receiving cavity of the housing; Preferably, after the liquid to be purified in the second storage component has been filtered, the process further includes: The side wall of the housing near the receiving cavity and the purification assembly are washed; Preferably, the step of washing the sidewall of the housing near the receiving cavity and the purification assembly includes: A first pump is used to deliver the washing liquid stored in the second storage component to the receiving cavity of the housing; Turn on the vibration generator; The sliding component is driven by a drive component to slide, pushing the washing liquid out through the outlet.

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