Perovskite single crystal crystallization device

Abstract

The utility model relates to a perovskite single crystal crystallization device belongs to perovskite preparation technical field, including crystallization platform, the top of crystallization platform places the crystallization pot, the top flange of crystallization pot is connected with the fairing, the fairing is the conical shape of inside diameter gradually reduces, the inside of fairing is provided with the stirring subassembly, the stirring subassembly includes the installation net board of fixed mounting in the inside wall of fairing, the bottom rotatory mounting of installation net board has the stirring shaft. This perovskite single crystal crystallization device, through setting up stirring subassembly in the inside of fairing, through worm drive worm gear rotation, drive stirring shaft rotation, drive stirring vane rotation, after fairing is installed to the top of crystallization pot, stirring vane extends to the inside of crystallization pot, carries out stirring to solution, makes solute distribution even, promotes crystallization effect, and fairing and crystallization pot split design, after crystallization is completed, it is convenient to clean up crystallization pot and stirring vane.

Description

Technical Field

[0001] This utility model relates to the field of perovskite preparation technology, specifically a perovskite single crystal crystallization device. Background Technology

[0002] Perovskite single crystals are perovskite materials composed of a single crystal, free of crystal defects and grain boundaries, with atoms arranged in a long-range order. Compared to thin film materials, they exhibit higher light absorption coefficients, wider light absorption ranges, higher carrier mobility, and longer carrier lifetimes, as well as superior thermal and humidity stability. Their structure is typically ABX3, where A and B are metal ions and X is a halide ion. Preparation methods include the vertical Bridgman process and anti-solvent diffusion. Perovskite single crystals show great potential in photovoltaics, medical imaging, and displays, such as improving solar cell efficiency, reducing CT radiation dose, and enabling direct growth of full-color display units.

[0003] Utility model patent CN217173938U discloses a perovskite single crystal crystallization device. The device includes a crystallization dish for containing a perovskite solution, with an opening at the upper end; a lid for sealing the opening at the upper end of the crystallization dish, with a condensate collection tank circumferentially arranged on the lower inner wall of the lid; a heating mechanism for heating the perovskite solution in the crystallization dish; and a heat preservation mechanism covering at least the lid and the outer wall of the crystallization dish. This utility model provides a perovskite single crystal crystallization device with a heat preservation mechanism and a condensate collection tank, which prevents the lower-temperature solvent after condensation from dripping back into the crystallization solution, ensuring a stable temperature of the crystallization solution and effectively preventing the formation of multiple crystal forms in temperature-sensitive perovskite.

[0004] However, in this perovskite single crystal crystallization device, the solution gradually decreases during the crystallization process, and the solute distribution in the solution is uneven, which reduces the crystallization efficiency. Therefore, a perovskite single crystallization device is proposed to solve the problems mentioned above. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a perovskite single crystal crystallization device that maintains uniformity of solutes in the solution, thus solving the problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A perovskite single crystal crystallization apparatus includes a crystallization platform, a crystallization pot placed on top of the crystallization platform, a flow guide shroud connected to the top flange of the crystallization pot, the flow guide shroud being a cone shape with a gradually decreasing inner diameter, and a stirring assembly being arranged inside the flow guide shroud.

[0008] The stirring assembly includes a mounting mesh plate fixedly installed on the inner wall of the flow guide shroud. A stirring shaft is rotatably mounted on the bottom of the mounting mesh plate. Stirring blades are fixedly mounted on the surface of the stirring shaft and extend into the crystallization pot. A worm gear is rotatably mounted on the top of the mounting mesh plate and is fixedly connected to the top of the stirring shaft. A worm is rotatably mounted on the inner wall of the flow guide shroud and meshes with the worm gear.

[0009] Furthermore, a mounting block is fixedly installed on one side of the flow guide, and a drive motor is fixedly installed on one side of the mounting block. The output shaft of the drive motor is fixedly connected to one end of the worm gear.

[0010] Furthermore, an outlet ring plate is fixedly installed on the inner wall of the flow guide, and a solvent outlet pipe is fixedly installed on one side of the flow guide.

[0011] Furthermore, the top flange of the flow guide is connected to a steam discharge pipe, and a condensation chamber is fixedly installed at one end of the steam discharge pipe.

[0012] Furthermore, a condenser tube is fixedly installed on the inner wall of the condensation chamber, with both the input and output ends of the condenser tube extending to the outside of the condensation chamber.

[0013] Furthermore, support legs are fixedly installed at the four corners of the bottom of the crystallization platform, and a limit ring is fixedly installed at the top of the crystallization platform, the limit ring being compatible with the crystallization pot.

[0014] Furthermore, a heater is fixedly installed at the bottom of the crystallization platform, a heating plate is embedded at the top of the crystallization platform, the heating plate is located inside the limiting ring, and a control panel is fixedly installed at the top of the crystallization platform.

[0015] Compared with the prior art, this utility model provides a perovskite single crystal crystallization device, which has the following beneficial effects:

[0016] This perovskite single crystal crystallization device incorporates a stirring assembly inside a flow guide shroud. A worm gear drives a worm wheel, which in turn rotates the stirring shaft and stirring blades. After the flow guide shroud is installed on top of the crystallization pot, the stirring blades extend into the pot to agitate the solution, ensuring uniform solute distribution and improving crystallization efficiency. The separate design of the flow guide shroud and crystallization pot facilitates cleaning of both after crystallization. This design solves the problem in common perovskite single crystallization devices where the solution gradually decreases and the solute distribution becomes uneven, leading to reduced crystallization efficiency. Attached Figure Description

[0017] Figure 1 This is a frontal sectional view of the structure of this utility model;

[0018] Figure 2This is a front view of the structure of this utility model;

[0019] Figure 3 This is a front sectional view of the air guide shield of this utility model;

[0020] Figure 4 This is a three-dimensional view of the stirring component of this utility model.

[0021] In the diagram: 1. Crystallization platform; 2. Crystallization pot; 3. Flow guide hood; 4. Mounting mesh plate; 5. Stirring shaft; 6. Stirring blades; 7. Worm gear; 8. Worm; 9. Mounting block; 10. Drive motor; 11. Outlet ring plate; 12. Solvent outlet pipe; 13. Steam outlet pipe; 14. Condensation chamber; 15. Condensation pipe; 16. Support leg; 17. Limiting ring; 18. Heater; 19. Heating plate; 20. Control panel. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1 to 4 The perovskite single crystal crystallization device in this embodiment includes a crystallization platform 1, a crystallization pot 2 placed on the top of the crystallization platform 1, and a flow guide 3 connected to the top flange of the crystallization pot 2. The flow guide 3 is a cone with a gradually decreasing inner diameter, and a stirring assembly is provided inside the flow guide 3.

[0024] The stirring assembly includes a mounting mesh plate 4 fixedly installed on the inner wall of the flow guide shroud 3. A stirring shaft 5 is rotatably mounted on the bottom of the mounting mesh plate 4, and stirring blades 6 are fixedly mounted on the surface of the stirring shaft 5, extending into the crystallization pot 2. A worm gear 7 is rotatably mounted on the top of the mounting mesh plate 4, and the worm gear 7 is fixedly connected to the top of the stirring shaft 5. A worm 8 is rotatably mounted on the inner wall of the flow guide shroud 3, meshing with the worm gear 7. The flange of the flow guide shroud 3 is connected to the top of the crystallization pot 2, and the stirring blades 6 extend into the crystallization pot 2. Rotation of the worm gear 8 drives the worm gear 7 to rotate, which in turn drives the stirring shaft 5 and the stirring blades 6, thus stirring the solution inside the crystallization pot 2.

[0025] Secondly, a mounting block 9 is fixedly installed on one side of the deflector 3, and a drive motor 10 is fixedly installed on one side of the mounting block 9. The output shaft of the drive motor 10 is fixedly connected to one end of the worm gear 8. The drive motor 10 drives the worm gear 8 to rotate.

[0026] Specifically, the drive motor 10 drives the worm gear 8 to rotate, which in turn drives the worm wheel 7 to rotate, which in turn drives the stirring shaft 5 to rotate, which in turn drives the stirring blades 6 to rotate, thereby stirring the solution inside the crystallization pot 2, so that the solute is evenly distributed and the crystallization effect is improved.

[0027] Please see Figure 1 and Figure 3 In this embodiment, an outlet ring plate 11 is fixedly installed on the inner wall of the flow guide shroud 3, and a solvent outlet pipe 12 is fixedly installed on one side of the flow guide shroud 3. After the solution vapor condenses on the inner wall of the flow guide shroud 3, it flows down from the inner wall of the flow guide shroud 3 and is discharged from the solvent outlet pipe 12.

[0028] Please see Figure 1 and Figure 2 In this embodiment, the top flange of the flow guide shroud 3 is connected to a steam discharge pipe 13, and a condensation chamber 14 is fixedly installed at one end of the steam discharge pipe 13.

[0029] A condenser tube 15 is fixedly installed on the inner wall of the condensing chamber 14, with both the inlet and outlet ends of the condenser tube 15 extending to the outside of the condensing chamber 14. Water vapor is discharged from the steam discharge pipe 13, and condensate is introduced into the condenser tube 15. The water vapor undergoes heat exchange and condensation in the condensing chamber 14 and is discharged from the bottom end of the condensing chamber 14.

[0030] Meanwhile, support legs 16 are fixedly installed at the four corners of the bottom of the crystallization platform 1, and a limit ring 17 is fixedly installed on the top of the crystallization platform 1. The limit ring 17 is compatible with the crystallization pot 2.

[0031] An electromagnetic heater 18 is fixedly installed at the bottom of the crystallization platform 1, and a heating plate 19 is embedded at the top of the crystallization platform 1. The heating plate 19 is located inside the limiting ring 17, and a control panel 20 is fixedly installed at the top of the crystallization platform 1. The control panel 20 controls the output power of the electromagnetic heater 18, and the electromagnetic heater 18 controls the heating of the heating plate 19.

[0032] The working principle of the above embodiment is as follows: the guide shroud 3 is connected to the top of the crystallization pot 2, the stirring blade 6 extends into the crystallization pot 2, the drive motor 10 drives the worm gear 8 to rotate, drives the worm wheel 7 to rotate, drives the stirring shaft 5 to rotate, drives the stirring blade 6 to rotate, and stirs the solution inside the crystallization pot 2, so that the solute is evenly distributed and the crystallization effect is improved.

[0033] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods, and any method that achieves the desired beneficial effect can be implemented. Furthermore, all electrical components in this embodiment are electrically connected to the main controller and power supply. The main controller can be a conventional, known device such as a computer that performs control functions. Those skilled in the art can control the electrical components through simple programming, and the existing disclosed power connection technologies are common knowledge in the field. Therefore, this embodiment will not elaborate further on their specific structural composition and working principles.

[0034] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A perovskite single crystal crystallization apparatus, comprising a crystallization platform (1), characterized in that: The crystallization platform (1) is topped with a crystallization pot (2), and the top flange of the crystallization pot (2) is connected to a flow guide (3). The flow guide (3) is a cone with a gradually decreasing inner diameter, and a stirring assembly is provided inside the flow guide (3). The stirring assembly includes a mounting mesh plate (4) fixedly installed on the inner wall of the flow guide shroud (3). A stirring shaft (5) is rotatably installed on the bottom of the mounting mesh plate (4). A stirring blade (6) is fixedly installed on the surface of the stirring shaft (5). The stirring blade (6) extends into the crystallization pot (2). A worm gear (7) is rotatably installed on the top of the mounting mesh plate (4). The worm gear (7) is fixedly connected to the top of the stirring shaft (5). A worm (8) is rotatably installed on the inner wall of the flow guide shroud (3). The worm gear (8) meshes with the worm gear (7).

2. The perovskite single crystal crystallization apparatus according to claim 1, characterized in that: A mounting block (9) is fixedly installed on one side of the flow guide (3), and a drive motor (10) is fixedly installed on one side of the mounting block (9). The output shaft of the drive motor (10) is fixedly connected to one end of the worm (8).

3. The perovskite single crystal crystallization apparatus according to claim 1, characterized in that: The inner wall of the flow guide (3) is fixedly installed with an outlet ring plate (11), and a solvent outlet pipe (12) is fixedly installed on one side of the flow guide (3).

4. The perovskite single crystal crystallization apparatus according to claim 1, characterized in that: The top flange of the guide shroud (3) is connected to a steam discharge pipe (13), and a condensation chamber (14) is fixedly installed at one end of the steam discharge pipe (13).

5. The perovskite single crystal crystallization apparatus according to claim 4, characterized in that: A condenser tube (15) is fixedly installed on the inner wall of the condensing chamber (14), and both the input and output ends of the condenser tube (15) extend to the outside of the condensing chamber (14).

6. The perovskite single crystal crystallization apparatus according to claim 1, characterized in that: The crystallization platform (1) is fixedly installed with support legs (16) at the four corners of its bottom, and a limiting ring (17) is fixedly installed on the top of the crystallization platform (1). The limiting ring (17) is compatible with the crystallization pot (2).

7. The perovskite single crystal crystallization apparatus according to claim 6, characterized in that: A heater (18) is fixedly installed at the bottom of the crystallization platform (1), and a heating plate (19) is embedded at the top of the crystallization platform (1). The heating plate (19) is located inside the limiting ring (17), and a control panel (20) is fixedly installed at the top of the crystallization platform (1).

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