Perovskite type solar cell with electrode isolation structure

Abstract

The utility model provides a perovskite type solar cell with an electrode isolation structure, which comprises a cell substrate, a bus electrode wire and a switching isolation wire, and adopts a perovskite type organic metal halide semiconductor as a substrate material. The high light absorption coefficient and the long carrier diffusion length can significantly improve the photoelectric conversion efficiency, and the direct contact between a silver paste bus electrode and a perovskite substrate is physically blocked through a conductive nickel paste transfer isolation wire, thereby effectively avoiding the generation of a reaction between silver and halogen, solving the industrial pain point of corrosion failure of a silver electrode in a traditional perovskite cell, and improving the photoelectric conversion efficiency. The width of the switching isolation wire is larger than that of the bus electrode wire, a space is reserved for the silver paste printing process, direct contact between the electrode and the base body caused by paste spreading is prevented, and the service life of the battery piece can be prolonged.

Description

Technical Field

[0001] This utility model relates to a solar cell, and more particularly to a perovskite solar cell with an electrode isolation structure. Background Technology

[0002] Perovskite solar cells utilize perovskite-type organometal halide semiconductors as light-absorbing materials. They typically consist of a transparent conductive substrate, a carrier transport layer (including an electron transport layer and a hole transport layer), a perovskite layer, and metal electrodes. In one type of perovskite solar panel, conductive silver paste is used to fabricate the electrodes for collecting and extracting current, exhibiting strong conductivity. However, the halogens in the perovskite material readily react with the conductive silver paste to form silver halides, causing the electrodes to gradually fail and affecting the lifespan of the solar cell. Therefore, it is necessary to optimize the structure of this type of solar cell to overcome these defects. Utility Model Content

[0003] The purpose of this invention is to provide a perovskite solar cell with an electrode isolation structure to extend its service life.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A perovskite solar cell with an electrode isolation structure includes:

[0006] A solar cell substrate, which is used to absorb light energy and convert it into electrical energy;

[0007] Busbar electrode wire, which is used to extract the current generated by the conversion of the battery cell substrate;

[0008] Also includes:

[0009] The adapter isolation line is formed on the surface of the cell substrate and is electrically connected to the cell substrate. The bus electrode line is formed on the surface of the adapter isolation line and is electrically connected to the cell substrate through the adapter isolation line. The adapter isolation line isolates the bus electrode line from the cell substrate to prevent the bus electrode line from reacting with the cell substrate and failing.

[0010] Specifically, the cell substrate is made of perovskite-type organometal halide semiconductor.

[0011] The transfer isolation line is formed by printing conductive nickel paste on the surface of the cell substrate. It is electrically connected to the surface of the cell substrate, and the current generated on the cell substrate can be output to the outside through the transfer isolation line.

[0012] The bus electrode wires are formed by printing conductive silver paste on the surface of the adapter isolation wire.

[0013] In one embodiment of this utility model, the width of the transition isolation line is greater than the width of the bus electrode line, and its thickness is less than the thickness of the bus electrode line, leaving space for the printing process of the bus electrode line and avoiding the local width of the bus electrode line being too wide and contacting the surface of the battery cell substrate.

[0014] The top edge of the adapter isolation line has an outwardly convex chamfer to improve the structural stability of the adapter isolation line, and the top edge of the bus electrode line has an outwardly convex chamfer to improve the structural stability of the bus electrode line.

[0015] The junction between the transfer isolation line and the cell substrate has a concave chamfer to improve the bonding strength between the transfer isolation line and the cell substrate. The junction between the bus electrode line and the transfer isolation line has a concave chamfer to improve the bonding strength between the bus electrode line and the transfer isolation line.

[0016] The advantages of this utility model are:

[0017] This solar cell uses perovskite-type organometal halide semiconductors as the substrate material. Its high light absorption coefficient and long carrier diffusion length can significantly improve photoelectric conversion efficiency. Through conductive nickel paste transfer isolation lines, direct contact between the silver paste bus electrode and the perovskite substrate is physically blocked, effectively avoiding the reaction between silver and halogens. This solves the industry pain point of silver electrode corrosion failure in traditional perovskite solar cells. The width of the transfer isolation line is greater than the width of the bus electrode line, leaving space for the silver paste printing process and preventing direct contact between the electrode and the substrate due to paste spreading, which can extend the service life of the solar cell. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the perovskite solar cell with electrode isolation structure proposed in this utility model;

[0019] Figure 2 yes Figure 1 A magnified close-up of point A in the middle. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0021] like Figure 1 , Figure 2 As shown, the perovskite solar cell with electrode isolation structure proposed in this utility model includes a cell substrate 100, a busbar electrode 200, and a transfer isolation line 300. The cell substrate is used to absorb light energy and convert it into electrical energy. The busbar electrode is used to lead out the current generated by the cell substrate. The transfer isolation line is formed on the surface of the cell substrate and is electrically connected to the cell substrate. The busbar electrode is formed on the surface of the transfer isolation line and is electrically connected to the cell substrate through the transfer isolation line. The transfer isolation line isolates the busbar electrode from the cell substrate to prevent the busbar electrode from reacting with the cell substrate and failing.

[0022] In this embodiment, the battery cell substrate is made of perovskite-type organometal halide semiconductor.

[0023] The transfer isolation line is formed by printing conductive nickel paste on the surface of the cell substrate. It is electrically connected to the surface of the cell substrate, and the current generated in the cell substrate can be output to the outside through the transfer isolation line.

[0024] The bus electrode wires are formed by printing conductive silver paste on the surface of the adapter isolation wire.

[0025] Several transfer isolation lines and bus electrode lines are respectively set and evenly distributed on the cell substrate to lead out the current generated by the cell substrate.

[0026] In this embodiment, the width of the transition isolation line is greater than the width of the bus electrode line, and its thickness is less than the thickness of the bus electrode line, leaving space for the printing process of the bus electrode line and avoiding the local width of the bus electrode line being too wide and contacting the surface of the battery cell substrate.

[0027] The top edge of the adapter isolation line has an outwardly convex chamfer 310 to improve the structural stability of the adapter isolation line, and the top edge of the bus electrode line 210 has a bus outwardly convex chamfer to improve the structural stability of the bus electrode line.

[0028] The junction between the transfer isolation line and the cell substrate has a 320° concave chamfer to improve the bonding strength between the transfer isolation line and the cell substrate. The junction between the bus electrode line and the transfer isolation line has a 220° concave chamfer to improve the bonding strength between the bus electrode line and the transfer isolation line.

[0029] In the description of this utility model, it should be noted that when terms such as "upper," "lower," "inner," "outer," "left," and "right" appear to indicate orientation or positional relationships, they should be understood as being based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product of this utility model is in use, or the orientation or positional relationships commonly understood by those skilled in the art. These terms are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, when terms such as "first" and "second" appear, they are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, it should also be noted that unless otherwise explicitly specified and limited, terms such as "installation," "setting," and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A perovskite solar cell with an electrode isolation structure, comprising: A solar cell substrate, which is used to absorb light energy and convert it into electrical energy; Busbar electrode wire, which is used to extract the current generated by the conversion of the battery cell substrate; Its characteristic is that it further includes: The adapter isolation line is formed on the surface of the cell substrate and is electrically connected to the cell substrate. The bus electrode line is formed on the surface of the adapter isolation line and is electrically connected to the cell substrate through the adapter isolation line. The adapter isolation line isolates the bus electrode line from the cell substrate to prevent the bus electrode line from reacting with the cell substrate and failing.

2. A perovskite solar cell with an electrode isolation structure according to claim 1, characterized in that: The battery cell substrate is made of perovskite-type organometal halide semiconductor.

3. A perovskite solar cell with an electrode isolation structure according to claim 1, characterized in that: The transfer isolation line is formed by printing conductive nickel paste on the surface of the cell substrate. It is electrically connected to the surface of the cell substrate, and the current generated on the cell substrate can be output to the outside through the transfer isolation line.

4. A perovskite solar cell with an electrode isolation structure according to claim 3, characterized in that: The bus electrode wires are formed by printing conductive silver paste on the surface of the adapter isolation wire.

5. A perovskite solar cell with an electrode isolation structure according to claim 4, characterized in that: The width of the transition isolation line is greater than the width of the bus electrode line, while its thickness is less than the thickness of the bus electrode line. This allows space for the printing process of the bus electrode line and prevents the local width of the bus electrode line from becoming too wide and contacting the surface of the battery cell substrate.

6. A perovskite solar cell with an electrode isolation structure according to claim 5, characterized in that: The top edge of the adapter isolation line has an outwardly convex chamfer to improve the structural stability of the adapter isolation line, and the top edge of the bus electrode line has an outwardly convex chamfer to improve the structural stability of the bus electrode line.

7. A perovskite solar cell with an electrode isolation structure according to claim 5, characterized in that: The junction between the transfer isolation line and the cell substrate has a concave chamfer to improve the bonding strength between the transfer isolation line and the cell substrate. The junction between the bus electrode line and the transfer isolation line has a concave chamfer to improve the bonding strength between the bus electrode line and the transfer isolation line.

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