A perovskite solar cell with a light-guiding structure

Abstract

This invention proposes a perovskite solar cell with a light-guiding structure, comprising a cell substrate, busbars, and a switching isolation line. A light-guiding bevel is formed on the side of the busbar, with its top edge angled inwards. This guides light to reflect and guide it into the space between adjacent busbars, allowing more light to reach the surface of the cell substrate. This increases the absorption of light energy by the cell substrate and improves photoelectric conversion efficiency. A switching isolation line is provided on the surface of the cell substrate. The busbars are formed on the surface of the switching isolation line and are electrically connected to the cell substrate through the switching isolation line. The switching isolation line isolates the busbars from the cell substrate, preventing them from reacting and failing, thereby improving the stability and lifespan of the cell.

Description

Technical Field

[0001] This utility model relates to a solar cell, and more particularly to a perovskite solar cell with a light-guiding 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. The metal electrodes, formed on the cell surface, collect and extract current. However, these metal electrodes inevitably occupy the cell's surface area, reducing the amount of sunlight received and affecting photoelectric conversion efficiency. Therefore, it is necessary to optimize the structure of these solar cells to overcome these drawbacks. Utility Model Content

[0003] The purpose of this invention is to provide a perovskite solar cell with a light-guiding structure to improve its photoelectric conversion efficiency.

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

[0005] A perovskite solar cell with a light-guiding structure, comprising:

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

[0007] The current-collecting electrode line is provided in several parts, and each current-collecting electrode line is formed on the surface of the solar cell substrate. It is used to draw out the current generated by the solar cell substrate. There is a clearance space between adjacent current-collecting electrode lines so that light can reach the surface of the solar cell substrate.

[0008] Among them, a light guide slope is provided on the side of the busbar electrode line. The top edge of the light guide slope is inclined inward towards the busbar electrode line, which can reflect and guide the light to the clearance space between adjacent return electrode lines, so that more light can reach the surface of the cell substrate.

[0009] In one embodiment of this utility model, the battery cell further includes:

[0010] 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.

[0011] In one embodiment of this utility model, light guide bevels are formed on both sides of the bus electrode line and are symmetrically distributed on both sides of the bus electrode line, so that the cross-section of the bus electrode line is a trapezoidal structure.

[0012] In one embodiment of this invention, the battery cell substrate is made of perovskite-type organometal halide semiconductor.

[0013] In one embodiment of this utility model, the transfer isolation line is formed by printing conductive nickel paste on the surface of the battery cell substrate. It is electrically connected to the surface of the battery cell substrate, and the current generated on the battery cell substrate can be output to the outside through the transfer isolation line.

[0014] In one embodiment of this utility model, the bus electrode wire is formed by printing conductive silver paste on the surface of the adapter isolation wire.

[0015] 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.

[0016] In one embodiment of this utility model, 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 a bus outwardly convex chamfer to improve the structural stability of the bus electrode line.

[0017] The advantages of this utility model are:

[0018] The solar cell has a light-guiding bevel on the side of the busbar electrode line, with its top edge angled inwards towards the inside of the busbar electrode line. This guides light to be reflected and directed into the space between adjacent busbar electrode lines, allowing more light to reach the surface of the solar cell substrate. This increases the absorption of light energy by the solar cell substrate and improves the photoelectric conversion efficiency. A transfer isolation line is set on the surface of the solar cell substrate. The busbar electrode line is formed on the surface of the transfer isolation line and is electrically connected to the solar cell substrate through the transfer isolation line. The transfer isolation line isolates the busbar electrode line from the solar cell substrate, preventing the busbar electrode line from reacting with the solar cell substrate and failing, thereby improving the stability and lifespan of the solar cell. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the perovskite solar cell with a light-guiding structure proposed in this utility model;

[0020] Figure 2 yes Figure 1 A magnified close-up of point A in the middle. Detailed Implementation

[0021] 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.

[0022] like Figure 1 , Figure 2 As shown, the perovskite solar cell with a light-guiding structure proposed in this invention includes a cell substrate 100, current-collecting electrode lines 200, and a transition isolation line 300. The cell substrate absorbs light energy and converts it into electrical energy. Several current-collecting electrode lines are provided, each formed on the surface of the cell substrate, for leading out the current converted by the cell substrate. A clearance space is left between adjacent current-collecting electrode lines to allow light to reach the surface of the cell substrate. The transition isolation line is formed on the surface of the cell substrate and is connected to the cell substrate. The cell substrate is electrically connected, and the busbar electrode is formed on the surface of the transfer isolation line. It is electrically connected to the cell substrate through the transfer isolation line, which isolates the busbar electrode from the cell substrate to prevent reaction and failure. A light-guiding bevel 210 is provided on the side of the busbar electrode. The top edge of this bevel is angled inwards towards the inside of the busbar electrode, reflecting and guiding light into the clearance space between adjacent return electrode lines, allowing more light to reach the surface of the cell substrate. The light reflection path is as follows: Figure 2 As shown.

[0023] In this embodiment, the light guide bevels are formed on both sides of the bus electrode line and are symmetrically distributed on both sides of the bus electrode line, so that the cross-section of the bus electrode line is a trapezoidal structure.

[0024] In this embodiment, the battery cell substrate is made of perovskite-type organometal halide semiconductor.

[0025] In this embodiment, 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.

[0026] In this embodiment, the bus electrode wire is formed by printing conductive silver paste on the surface of the adapter isolation wire.

[0027] 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.

[0028] In this embodiment, 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 has a bus outwardly convex chamfer 220 to improve the structural stability of the bus electrode 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 a light-guiding structure, comprising: A solar cell substrate, which is used to absorb light energy and convert it into electrical energy; The current-collecting electrode line is provided in several parts, and each current-collecting electrode line is formed on the surface of the solar cell substrate. It is used to draw out the current generated by the solar cell substrate. There is a clearance space between adjacent current-collecting electrode lines so that light can reach the surface of the solar cell substrate. Its features are: A light-guiding slope is provided on the side of the busbar electrode line. The top edge of the light-guiding slope is inclined inward towards the busbar electrode line, which can reflect and guide the light to the clearance space between adjacent return electrode lines, so that more light can reach the surface of the cell substrate.

2. A perovskite solar cell with a light-guiding structure according to claim 1, characterized in that, Also 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.

3. A perovskite solar cell with a light-guiding structure according to claim 1, characterized in that: The light guide bevels are formed on both sides of the bus electrode line and are symmetrically distributed on both sides of the bus electrode line, so that the cross-section of the bus electrode line is a trapezoidal structure.

4. A perovskite solar cell with a light-guiding structure according to claim 1, characterized in that: The battery cell substrate is made of perovskite-type organometal halide semiconductor.

5. A perovskite solar cell with a light-guiding 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.

6. A perovskite solar cell with a light-guiding structure according to claim 5, characterized in that: The bus electrode wires are formed by printing conductive silver paste on the surface of the adapter isolation wire.

7. A perovskite solar cell with a light-guiding structure according to claim 6, 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.

8. A perovskite solar cell with a light-guiding structure according to claim 1, 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.

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