Low-temperature flash evaporation film making machine

Abstract

The utility model discloses a low-temperature flash evaporation film making machine in the technical field of film making machine equipment, which comprises a processing base, the upper end of the processing base is fixedly connected with a vacuum bin, the upper end of the vacuum bin is hinged with a sealing cover, the center of the sealing cover is fixedly provided with an observation window, the interior of the vacuum bin is fixedly connected with a low-temperature plate, and the lower end of the low-temperature plate is fixedly connected with an air inlet. A containing groove is fixedly formed in the bottom of the low-temperature plate, a cooling copper pipe is fixedly connected into the containing groove, water inlets and outlets are formed in the two ends of the cooling copper pipe, and the water inlet and outlet in one end is fixedly connected with a temperature controller. According to the device, water flow cooling treatment is adopted, meanwhile, the temperature control system is adopted for low-temperature adjustment, the low temperature of the thin film can be controlled and adjusted, meanwhile, the low-temperature state is good, and the thin film machining quality is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of film-making machine equipment, in particular to a low-temperature flash evaporation film-making machine. Background Art

[0002] Perovskite, a synthetic material, was first used in the photovoltaic power generation field in 2009. Due to its excellent photoelectric conversion efficiency, low raw material cost and high energy density, it has become a high-potential choice to replace silicon cells in the new generation of photovoltaic materials. The quality of perovskite film is an important factor affecting the performance of perovskite solar cells. Therefore, improving the film formation quality of perovskite film is the top priority.

[0003] During the flash evaporation process of existing perovskite films, the perovskite wet film sample is placed at a low temperature to slow down the nucleation and crystallization rate, thereby obtaining a perovskite intermediate phase with high crystallization quality and insensitive to ambient temperature. Conventional processing tables have poor temperature control effects, which can easily affect the formation of the intermediate phase and thus affect the quality of the film, and have certain limitations. Utility Model Content

[0004] The purpose of the present utility model is to provide a low-temperature flash evaporation film-making machine to solve the problem raised in the above background technology that the existing perovskite film places the perovskite wet film sample at a low temperature during the flash evaporation process to slow down the nucleation and crystallization rate, and obtain a perovskite intermediate phase with high crystallization quality and insensitive to the ambient temperature. The conventional processing table has a poor temperature control effect, which easily affects the formation of the intermediate phase and thus affects the quality of the film, and has certain limitations.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a low-temperature flash evaporation film making machine, comprising a processing base, the upper end of the processing base is fixedly connected to a vacuum chamber, the upper end of the vacuum chamber is hinged with a sealing cover, the center of the sealing cover is fixedly provided with an observation window, one side of the upper end of the sealing cover is fixedly connected to a pulling handle, the interior of the vacuum chamber is fixedly connected to a low-temperature plate, the bottom of the low-temperature plate is fixedly provided with a placement groove, the interior of the placement groove is fixedly connected to a cooling copper tube, both ends of the cooling copper tube are provided with water inlets and outlets, and one end of the water inlet and outlet is fixedly connected to a temperature controller through a fluid control solenoid valve.

[0006] Preferably, the lower end of the vacuum chamber is connected to a three-way valve through an air guide pipe, one end of the three-way valve is connected to a vacuum pump, and the other end of the three-way valve is connected to a pneumatic valve.

[0007] Preferably, a PLC controller is fixedly connected to one side of the interior of the processing base, and a power supply device is fixedly connected to the other side of the interior of the processing base.

[0008] Preferably, a temperature measuring slot is provided on one side of the vacuum chamber, and a vacuum gauge slot is fixedly provided on the other side of the vacuum chamber.

[0009] Compared with the prior art, the beneficial effects of the present invention are:

[0010] 1. The utility model adopts water flow cooling treatment and a temperature control system for low-temperature regulation, so that the low temperature of the film can be controlled and adjusted, and the low-temperature state is good, thereby improving the quality of film processing.

[0011] 2. The utility model can make the interior of the vacuum chamber in a vacuum state. At this time, the solvent in the sample is extracted, which is conducive to the formation of the intermediate phase. The use of vacuum to form the intermediate phase makes the formation effect of the intermediate phase better. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the utility model;

[0013] Figure 2 This is a schematic diagram of the internal structure of the vacuum chamber of the utility model;

[0014] Figure 3 This is a structural diagram of the cryopanel of the utility model.

[0015] In the figure: 1. Processing base; 2. Vacuum chamber; 3. Sealing cover; 4. Observation window; 5. Cryogenic plate; 6. Placement slot; 7. Cooling copper tube; 8. Water inlet and outlet; 9. Temperature controller; 10. Three-way valve; 11. Vacuum pump; 12. Pneumatic valve; 13. PLC controller; 14. Power supply unit; 15. Air guide tube; 16. Thermometer slot; 17. Vacuum gauge slot; 18. Pull handle. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] See also Figure 1-3The utility model provides a technical solution: a low-temperature flash film making machine, including a processing base 1, a vacuum chamber 2 is fixedly connected to the upper end of the processing base 1, a sealing cover 3 is hinged on the upper end of the vacuum chamber 2, an observation window 4 is fixedly provided in the center of the sealing cover 3, a pulling handle 18 is fixedly connected to one side of the upper end of the sealing cover 3, a low-temperature plate 5 is fixedly connected to the inside of the vacuum chamber 2, a placement groove 6 is fixedly opened at the bottom of the low-temperature plate 5, a cooling copper tube 7 is fixedly connected to the inside of the placement groove 6, and water inlet and outlet 8 are provided at both ends of the cooling copper tube 7, and the water inlet and outlet 8 at one end is fixedly connected to a temperature controller 9 through a fluid control solenoid valve.

[0018] In this embodiment, a film is placed on the upper end of the cryopanel 5 for low-temperature treatment. At this time, the sealing cover 3 is closed to form a sealed state. During the low-temperature treatment, one water inlet and one water outlet are provided through the water inlet and outlet 8. A temperature measuring thermocouple is installed on the cryopanel 5. After the temperature is set by the temperature controller 9, the water flow control solenoid valve is opened, and water enters the copper tube and flows out through the cryopanel 5, thereby realizing low-temperature control. This design method adopts water flow cooling treatment and a temperature control system for low-temperature adjustment, which can make the low temperature of the film controllable and adjustable, and at the same time, the low-temperature state is good, thereby improving the quality of film processing.

[0019] Specifically, the lower end of the vacuum chamber 2 is connected to a three-way valve 10 through an air guide pipe 15 , one end of the three-way valve 10 is connected to a vacuum pump 11 , and the other end of the three-way valve 10 is connected to a pneumatic valve 12 .

[0020] In this embodiment, a three-way valve 10 is set, and pneumatic baffle valves and air extraction / intake pipes are installed at the other two ends of the three-way valve 10. The vacuum extraction / vacuum breaking operation is achieved by triggering the opening and closing of the pneumatic baffle valve. This design method can make the interior of the vacuum chamber 2 in a vacuum state. At this time, the solvent in the sample is extracted, which is conducive to the formation of the intermediate phase. The use of vacuum to form the intermediate phase makes the formation effect of the intermediate phase better.

[0021] Specifically, a PLC controller 13 is fixedly connected to one side of the interior of the processing base 1 , and a power supply device 14 is fixedly connected to the other side of the interior of the processing base 1 .

[0022] In this embodiment, the power supply device 14 can provide power for the whole, and the PLC controller 13 can control the vacuum pump 11 and monitor the temperature of the cryopanel 5 and the vacuum state inside the vacuum chamber 2.

[0023] Specifically, a temperature measuring groove 16 is provided on one side of the vacuum chamber 2 , and a vacuum gauge groove 17 is fixedly provided on the other side of the vacuum chamber 2 .

[0024] In this embodiment, the thermometer slot 16 and the vacuum gauge slot 17 are provided and flange connection is adopted to ensure good sealing. The vacuum gauge and the thermometer are respectively connected to the thermometer slot 16 and the vacuum gauge slot 17 to obtain monitoring data. The start and stop of the vacuum pump 11 and the water flow temperature can be controlled through the internal PLC controller 13.

[0025] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-temperature flash film-making machine, comprising a processing base (1), characterized in that: The upper end of the processing base (1) is fixedly connected to a vacuum chamber (2), the upper end of the vacuum chamber (2) is hinged with a sealing cover (3), the center of the sealing cover (3) is fixedly provided with an observation window (4), one side of the upper end of the sealing cover (3) is fixedly connected to a pulling handle (18), the interior of the vacuum chamber (2) is fixedly connected to a low-temperature plate (5), the bottom of the low-temperature plate (5) is fixedly provided with a placement groove (6), the interior of the placement groove (6) is fixedly connected to a cooling copper tube (7), both ends of the cooling copper tube (7) are provided with water inlet and outlet ports (8), and the water inlet and outlet port (8) at one end is fixedly connected to a temperature controller (9) through a fluid control solenoid valve.

2. The low-temperature flash film making machine according to claim 1, characterized in that: The lower end of the vacuum chamber (2) is connected to a three-way valve (10) via an air guide pipe (15), one end of the three-way valve (10) is connected to a vacuum pump (11), and the other end of the three-way valve (10) is connected to a pneumatic valve (12).

3. The low-temperature flash film making machine according to claim 1, characterized in that: A PLC controller (13) is fixedly connected to one side of the interior of the processing base (1), and a power supply device (14) is fixedly connected to the other side of the interior of the processing base (1).

4. The low-temperature flash film making machine according to claim 1, characterized in that: A temperature measuring groove (16) is provided on one side of the vacuum chamber (2), and a vacuum gauge groove (17) is fixedly provided on the other side of the vacuum chamber (2).

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