Perovskite solar cell scribing device and application thereof
By combining chemical etching and mechanical etching technology in the perovskite solar cell scoring process, the corrosion liquid reacts with the film layer and erases the reactants by mechanical devices, the problem of leakage or over-etching is solved, and the performance of the battery module is improved.
Patent Information
- Application Number
- CN202510338435.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2025-06-20
AI Technical Summary
Existing perovskite solar cells are prone to leakage or over-etching problems during the scoring process, resulting in increased series resistance, reduced filling factor and reduced power.
Using a device including a chemical scribing device and a mechanical scribing device, the chemical scribing device uses a corrosive liquid to react with the perovskite film layer, and then the reacted substance is wiped off by the mechanical scribing device, avoiding mechanical damage to the bottom film layer by metal scribing.
The accuracy of etching is achieved, the problems of missed or over-etching are avoided, and the filling factor and power output of the components are improved.
Smart Images
Figure CN120187259A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the field of etching technology, and particularly relates to a device for scribing perovskite solar cells and its application. Background Art
[0002] For large-area perovskite solar cell modules, in order to obtain appropriate voltage and current outputs, P1, P2, and P3 scribing can be performed by laser or mechanical scribing methods (as shown in Figure 1 ), to achieve "segmentation" and "series connection" of the battery. The process flow is as follows: deposit a conductive electrode layer on the substrate, scribe lines by laser or mechanical means for preliminary sub-cell segmentation; deposit optoelectronic functional layers (including perovskite light absorption layer, electron transport layer, hole transport layer, etc.), and then scribe the P2 line by laser or mechanical means, remove the optoelectronic functional layer at the P2 line and retain the conductive electrode layer to complete the series connection channel of the sub-cells; deposit the top electrode film layer, and finally scribe P3 by laser or mechanical means, remove the optoelectronic functional layer and the top electrode film layer and retain the conductive electrode layer to complete the segmentation of the front electrode. Among them, under-scribing or over-scribing of P2 and P3 may both lead to an increase in series resistance, a decrease in the fill factor of the module, and a reduction in the module power.
[0003] However, scribing by laser usually makes it difficult to control the laser energy and focal position, which easily leads to over-scribing or under-scribing. The thermal effect of the laser will also cause damage to the perovskite film layer at adjacent positions. Mechanical scribing is carried out by controlling the pressure of the scribe needle, but this method is also difficult to control. The pressure fluctuation during the scribing process will also cause over-scribing or under-scribing. In addition, mechanical wear during the scribing process will reduce the life of the scribe needle and increase the production cost. Summary of the Invention
[0004] The first aspect of the present application provides a device for scribing perovskite solar cells and its application, aiming to solve the problem of under-scribing or over-scribing that occurs during the scribing of existing perovskite solar cells.
[0005] The present application provides a device for scribing perovskite solar cells, including a chemical scribing device, a mechanical scribing device, and a motor. The chemical scribing device and the mechanical scribing device are located on the same straight line;
[0006] The chemical scribing device includes a chemical scribe needle and a liquid injection pump. A storage chamber is provided inside the chemical scribe needle. The storage chamber is connected to the air through the tip of the chemical scribe needle. The liquid injection pump and the storage chamber are connected through a pipeline;
[0007] The mechanical scribing device includes a mechanical scribe needle and a buffer film. The buffer film is wrapped around the tip of the mechanical scribe needle;
[0008] The motor provides power for the chemical scribing device and the mechanical scribing device.
[0009] In some embodiments of the device for scribing perovskite solar cells according to the present application, an etching solution is stored in the storage chamber.
[0010] In some embodiments of the device for scribing perovskite solar cells according to the present application, the etching solution includes one or more of N,N-dimethylformamide, dimethyl sulfoxide, 1,3-dimethylpropyleneurea, N-methylpyrrolidone, γ-butyrolactone, and N,N-dimethylacetamide.
[0011] In some embodiments of the device for scribing perovskite solar cells according to the present application, the buffer film includes a rubber film.
[0012] In some embodiments of the device for scribing perovskite solar cells according to the present application, the motor is a linear motor.
[0013] In some embodiments of the device for scribing perovskite solar cells according to the present application, the distance between the chemical scribing device and the mechanical scribing device is 5 - 20 cm.
[0014] The second aspect of the present application provides a method for scribing perovskite solar cells, which is implemented by using the device for scribing perovskite solar cells in the first aspect of the present application.
[0015] In some embodiments of the method for scribing perovskite solar cells according to the present application, the method includes the following steps:
[0016] During the preparation process of the perovskite solar cell, scribing is sequentially performed at the position where scribing is required by using a chemical scribing device and a mechanical scribing device.
[0017] In some embodiments of the method for scribing perovskite solar cells according to the present application, during the scribing process, the pressure of the chemical scribing device on the film layer is 0.01 - 0.1 MPa.
[0018] In some embodiments of the method for scribing perovskite solar cells according to the present application, the moving rate of the chemical scribing device is 200 - 800 mm / s.
[0019] In some embodiments of the method for scribing perovskite solar cells according to the present application, the outflow rate of the etching solution is 0.01 - 0.04 μl / s.
[0020] In some embodiments of the method for scribing perovskite solar cells according to the present application, during the scribing process, the pressure of the mechanical scribing device on the film layer is 0.1 - 0.5 MPa.
[0021] The beneficial effects of the present application include: The device for scribing perovskite solar cells according to the present application reacts the etching solution with the perovskite film layer, and then uses mechanical etching to wipe off the reacted substances. The substances after the chemical reaction are extremely easy to be wiped off, and then a soft scribing needle can be used for wiping, avoiding the mechanical damage to the bottom film layer caused by the original metal scribing needle, ensuring the accuracy of scribing, and avoiding the problems of missed scribing or over-scribing. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a schematic structural diagram of a perovskite solar cell component to be scribed;
[0023] Figure 2 It is a schematic structural diagram of the device for scribing perovskite solar cells according to the present application;
[0024] In the figure: 1. Substrate; 2. Conductive electrode layer; 3. Photoelectric functional layer; 4. Electrode film layer; 5. Chemical scribing needle; 6. Storage chamber; 7. Liquid injection pump; 8. Mechanical scribing needle; 9. Rubber film. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0025] The embodiments of the present invention will be described in detail below. The examples of the embodiments are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.
[0026] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.
[0027] The embodiment of the present application provides a device for scribing perovskite solar cells, including a chemical scribing device, a mechanical scribing device, and a motor. The chemical scribing device and the mechanical scribing device are located on the same straight line;
[0028] The chemical scribing device includes a chemical scribing needle and a liquid injection pump. A storage chamber is arranged inside the chemical scribing needle, and the storage chamber is communicated with the air through the needle tip of the chemical scribing needle. The liquid injection pump and the storage chamber are communicated through a pipeline;
[0029] The mechanical scribing device includes a mechanical scribing needle and a buffer film. The buffer film is wrapped around the needle tip of the mechanical scribing needle;
[0030] The motor provides power for the chemical scribing device and the mechanical scribing device.
[0031] In some embodiments of the present application, an etching solution is stored in the storage chamber. By reacting the etching solution with the perovskite film layer, and then using a mechanical etching method to wipe off the reacted substances, the substances after the chemical reaction are extremely easy to be wiped off. Subsequently, a soft scribing needle can be used for wiping, avoiding mechanical damage to the bottom film layer caused by the original metal scribing needle.
[0032] In some embodiments of the present application, the etching solution includes one or more of N,N-dimethylformamide, dimethyl sulfoxide, 1,3-dimethylpropyleneurea, N-methylpyrrolidone, γ-butyrolactone, and N,N-dimethylacetamide.
[0033] In some embodiments of the present application, the buffer film includes a rubber film. The buffer film functions to wipe off the chemical reaction substances during chemical scribing, and using the buffer film can avoid mechanical damage to the film layer caused by the mechanical scribing of metal.
[0034] In some embodiments of the present application, the motor is a linear motor. The linear motor provides power for the chemical scribing device and the mechanical scribing device, enabling them to move linearly to scribe the perovskite film.
[0035] In some embodiments of the present application, the distance between the chemical scribing device and the mechanical scribing device is 5 - 20 cm, such as 5 cm, 8 cm, 10 cm, 12 cm, 15 cm, 20 cm, etc.
[0036] The embodiments of the present application further provide a method for scribing a perovskite solar cell, which is implemented by using the device for scribing a perovskite solar cell described in the first aspect of the present application.
[0037] In some embodiments of the present application, it includes the following steps: during the preparation process of the perovskite solar cell, the chemical scribing device and the mechanical scribing device are sequentially used for scribing at the position where scribing is required.
[0038] In some embodiments of the present application, the pressure of the chemical scribing device on the film layer is 0.01 - 0.1 MPa, such as 0.01 MPa, 0.05 MPa, 0.08 MPa, 0.1 MPa, etc.
[0039] In some embodiments of the present application, the moving rate of the chemical scribing device is 200 - 800 mm / s, such as 200 mm / s, 260 mm / s, 300 mm / s, 380 mm / s, 430 mm / s, 590 mm / s, 630 mm / s, 720 mm / s, 800 mm / s, etc.
[0040] In some embodiments of the present application, the outflow rate of the etching solution is 0.01 - 0.04 ul / s, such as 0.01 ul / s, 0.02 ul / s, 0.03 ul / s, 0.04 ul / s, etc.
[0041] In some embodiments of the present application, during the scribing process, the pressure of the mechanical scribing device on the film layer is 0.1 - 0.5 MPa, such as 0.1 MPa, 0.2 MPa, 0.3 MPa, 0.5 MPa, etc.
[0042] The technical solution of the present application will be further described below in conjunction with specific embodiments.
[0043] Example 1
[0044] A device for scribing a perovskite solar cell includes a chemical scribing device, a mechanical scribing device, and a linear motor. The chemical scribing device and the mechanical scribing device are located on the same straight line; the linear motor drives the chemical scribing device and the mechanical scribing device to move along a straight line.
[0045] The chemical scribing device in this embodiment includes a chemical scribing needle 5 and a liquid injection pump 7. A storage chamber 6 is provided inside the chemical scribing needle 5, and an etching solution is stored in the storage chamber 6. The etching solution used in this embodiment is N,N-dimethylformamide. The storage chamber 6 is connected to the air through the needle tip of the chemical scribing needle 5, that is, the etching solution can flow out through the needle tip of the chemical scribing needle 5 and drip onto the film constituting the perovskite solar cell. The liquid injection pump 7 and the storage chamber 6 are connected through a pipeline. The setting of the liquid injection pump 7 provides power for the flow of the etching solution and can supplement the etching solution through the liquid injection pump 7.
[0046] A mechanical scribing device is provided 10 cm away from the chemical scribing device. The mechanical scribing device in this embodiment includes a mechanical scribing needle 8 and a rubber film 9. The rubber film 9 is wrapped around the needle tip of the mechanical scribing needle 8, which plays a role in protecting the needle tip of the mechanical scribing needle and the film layer of the solar cell.
[0047] Example 2
[0048] The difference between the device for scribing a perovskite solar cell described in Example 2 and that in Example 1 is only that, in the device for scribing a perovskite solar cell described in Example 2, the distance between the chemical scribing device and the mechanical scribing device is 20 cm.
[0049] Specifically:
[0050] A device for scribing a perovskite solar cell includes a chemical scribing device, a mechanical scribing device, and a linear motor. The chemical scribing device and the mechanical scribing device are located on the same straight line; the linear motor drives the chemical scribing device and the mechanical scribing device to move along a straight line.
[0051] The chemical scribing device in this embodiment includes a chemical scriber 5 and a liquid injection pump 7. A storage chamber 6 is provided inside the chemical scriber 5, and a corrosive liquid is stored in the storage chamber 6. The corrosive liquid used in this embodiment is N,N-dimethylformamide. The storage chamber 6 is connected to the air through the tip of the chemical scriber 5, that is, the corrosive liquid can flow out through the tip of the chemical scriber 5 and drip onto the film forming the perovskite solar cell. The liquid injection pump 7 and the storage chamber 6 are connected through a pipeline. The setting of the liquid injection pump 7 provides power for the flow of the corrosive liquid, and the corrosive liquid can be replenished through the liquid injection pump 7.
[0052] A mechanical scribing device is provided 20 cm away from the chemical scribing device. The mechanical scribing device in this embodiment includes a mechanical scriber 8 and a rubber film 9. The rubber film 9 wraps around the tip of the mechanical scriber 8, playing a role in protecting the tip of the mechanical scriber and the solar cell film layer.
[0053] Example 3
[0054] A method for scribing a perovskite solar cell includes the following steps:
[0055] Deposit a conductive electrode layer 2 on a substrate 1, and sequentially scribe lines (denoted as P1 line) along the places where scribing is required on the conductive electrode layer 2 with the chemical scribing device and the mechanical scribing device of the device for scribing a perovskite solar cell described in Embodiment 1 of the present application. During the scribing process of the P1 line, control the pressure of the chemical scribing device on the film layer to be 0.05 MPa, the moving speed to be 300 mm / s, and the outflow rate of the corrosive liquid to be 0.02 ul / s; and adjust the pressure of the mechanical scribing device on the film layer to be 0.2 MPa to complete the preliminary sub-cell segmentation; then deposit an optoelectronic functional layer 3. After the deposition of the optoelectronic functional layer 3 is completed, sequentially scribe lines (denoted as P2 line) along the places where scribing is required on the optoelectronic functional layer 3 with the chemical scribing device and the mechanical scribing device of the device described in Embodiment 1. During the scribing process of the P2 line, control the pressure of the chemical scribing device on the film layer to be 0.02 MPa, the moving speed to be 300 mm / s, and the outflow rate of the corrosive liquid to be 0.02 ul / s; and adjust the pressure of the mechanical scribing device on the film layer to be 0.2 MPa to remove the optoelectronic functional layer 3 at the P2 line and retain the conductive electrode layer 2 to complete the sub-cell series connection channel; then deposit a top electrode film layer 4. After the deposition of the top electrode film layer 4 is completed, sequentially scribe lines (denoted as P3 line) along the places where scribing is required on the electrode film layer 4 with the chemical scribing device and the mechanical scribing device of the device described in Embodiment 1. During the scribing process of the P3 line, control the pressure of the chemical scribing device on the film layer to be 0.05 MPa, the moving speed to be 500 mm / s, and the outflow rate of the corrosive liquid to be 0.02 ul / s; and adjust the pressure of the mechanical scribing device on the film layer to be 0.3 MPa; remove the optoelectronic functional layer 3 and the top electrode film layer 4 and retain the conductive electrode layer 2 to complete the segmentation of the front electrode.
[0056] Example 4
[0057] A method for scribing a perovskite solar cell, comprising the following steps:
[0058] Deposit a conductive electrode layer 2 on a substrate 1, and sequentially scribe a chemical scribing device and a mechanical scribing device of the device for scribing a perovskite solar cell described in Embodiment 1 of the present application along the scribing position of the conductive electrode layer 2 (denoted as P1 line). During the scribing process of the P1 line, control the pressure of the chemical scribing device on the film layer to be 0.05 MPa, the moving speed to be 500 mm / s, and the outflow rate of the etching solution to be 0.02 ul / s; and adjust the pressure of the mechanical scribing device on the film layer to be 0.2 MPa to preliminarily divide the sub-cells; then deposit an optoelectronic functional layer 3. After the deposition of the optoelectronic functional layer 3 is completed, sequentially scribe a chemical scribing device and a mechanical scribing device of the device described in Embodiment 1 along the scribing position of the optoelectronic functional layer 3 (denoted as P2 line). During the scribing process of the P2 line, control the pressure of the chemical scribing device on the film layer to be 0.05 MPa, the moving speed to be 500 mm / s, and the outflow rate of the etching solution to be 0.02 ul / s; and adjust the pressure of the mechanical scribing device on the film layer to be 0.2 MPa to remove the optoelectronic functional layer 3 at the P2 line and retain the conductive electrode layer 2 to complete the series connection channel of the sub-cells; then deposit a top electrode film layer 4. After the deposition of the top electrode film layer 4 is completed, sequentially scribe a chemical scribing device and a mechanical scribing device of the device described in Embodiment 1 along the scribing position of the electrode film layer 4 (denoted as P3 line). During the scribing process of the P3 line, control the pressure of the chemical scribing device on the film layer to be 0.05 MPa, the moving speed to be 500 mm / s, and the outflow rate of the etching solution to be 0.02 ul / s; and adjust the pressure of the mechanical scribing device on the film layer to be 0.2 MPa; remove the optoelectronic functional layer 3 and the top electrode film layer 4 and retain the conductive electrode layer 2 to complete the division of the front electrode.
[0059] Although the above embodiments have been shown and described, it can be understood that the above embodiments are exemplary and should not be construed as limitations on the present invention. Any changes, modifications, substitutions, and variations made by those of ordinary skill in the art to the above embodiments are within the protection scope of the present invention.
Claims
1. A device for scribing a perovskite solar cell, characterized in that: It comprises a chemical scribing device, a mechanical scribing device and a motor, wherein the chemical scribing device and the mechanical scribing device are located in the same straight line; The chemical scoring device comprises a chemical scoring needle and an injection pump, wherein a storage chamber is arranged inside the chemical scoring needle, the storage chamber is connected to the air through the needle of the chemical scoring needle, and the injection pump and the storage chamber are connected through a pipeline; The mechanical scribing device comprises a mechanical scribing needle and a buffer film, wherein the buffer film is wrapped around the needle head of the mechanical scribing needle; The motor provides power to the chemical scribing device and the mechanical scribing device.
2. The device for scribing a perovskite solar cell according to claim 1, characterized in that: The storage chamber stores a corrosive liquid.
3. The device for scribing a perovskite solar cell according to claim 2, characterized in that: The etching solution includes one or more of N,N-dimethylformamide, dimethyl sulfoxide, 1,3-dimethylpropyleneurea, N-methylpyrrolidone, gamma-butyrolactone and N,N-dimethylacetamide.
4. The device for scribing a perovskite solar cell according to claim 1, characterized in that: The buffer film includes a rubber film; And / or, the electric motor is a linear motor.
5. The device for scribing a perovskite solar cell according to claim 1, characterized in that: The distance between the chemical scribing device and the mechanical scribing device is 5-20 cm.
6. A method for scratching a perovskite solar cell, characterized in that: The method is implemented by using the device for scribing a perovskite solar cell as described in any one of claims 1 to 4.
7. The method for scratching a perovskite solar cell according to claim 6, characterized in that: The following steps are involved: During the preparation process of perovskite solar cells, chemical scribing devices and mechanical scribing devices are used in turn to scribing where scribing is required.
8. The method for scratching a perovskite solar cell according to claim 7, characterized in that: During the scribing process, the pressure of the chemical scribing device on the film layer is 0.01-0.1 MPa.
9. The method for scratching a perovskite solar cell according to claim 7, characterized in that: The movement rate of the chemical scribing device is 200-800 mm / s; And / or, the outflow rate of the corrosive liquid is 0.01-0.04ul / s.
10. The method for scribing a perovskite solar cell according to claim 7, characterized in that: During the scribing process, the pressure of the mechanical scribing device on the film layer is 0.1-0.5 MPa.