Flexible perovskite battery

Abstract

The utility model discloses a flexible perovskite cell which comprises a first transparent substrate, a first conductive layer, a perovskite layer, a hole transport layer, a second conductive layer and a second transparent substrate. The first transparent base material and the second transparent base material are both flexible materials, the first conductive layer is prepared on the surface of the first transparent base material, the second conductive layer is prepared on the surface of the second base material, and the first conductive layer and the second conductive layer are oppositely arranged; the perovskite layer and the hole transport layer are arranged between the first conductive layer and the second conductive layer; according to the utility model, the first transparent base material and the second transparent base material which are made of flexible materials are adopted, and the first conductive layer and the second conductive layer are respectively manufactured on the first transparent base material and the second transparent base material, so that the perovskite cell has the characteristics of flexibility and transparency through the structural design, and the application range of the perovskite cell is expanded; and the service life and the photoelectric conversion rate of the perovskite cell can be improved.

Description

Technical Field

[0001] The utility model relates to the field of photovoltaic technology, and more specifically, to a flexible perovskite battery. Background Art

[0002] Photovoltaic solar energy is one of the most important clean energy sources today and is the most critical high-tech solution for humanity as a whole to address climate change and achieve its "carbon goals." Perovskite photovoltaic cells are the third generation of photovoltaic solar technology. Compared to previous generations of technologies, namely silicon cells and thin-film cells, photovoltaic cells have a series of advantages, such as high conversion rate, low cost, low energy consumption, and low pollution. They are considered to be the key industrial technology with the greatest industrial potential. In current perovskite cells, transparent conductive materials such as ITO are mainly used as the electron or hole transport electrode of the perovskite cell. This is the component with the highest material cost in the perovskite cell, exceeding 30% of the total material cost. Due to the brittle nature of transparent conductive materials such as ITO, their application scenarios are limited to flat surfaces. Utility Model Content

[0003] The present invention provides a flexible perovskite battery to solve the problems raised in the above background technology. To achieve the above purpose, the present invention provides the following technical solutions: a flexible perovskite battery, comprising a first transparent substrate, a first conductive layer, a perovskite layer, a hole transport layer, a second conductive layer, and a second transparent substrate; the first transparent substrate and the second transparent substrate are both flexible materials, the first conductive layer is prepared on the surface of the first transparent substrate, the second conductive layer is prepared on the surface of the second substrate, and the first conductive layer and the second conductive layer are arranged opposite each other; the perovskite layer and the hole transport layer are arranged between the first conductive layer and the second conductive layer.

[0004] Preferably, the first transparent substrate and the second transparent substrate are both polymer transparent substrates.

[0005] Preferably, the first transparent substrate and the second transparent substrate include, but are not limited to, PET film, cycloolefin polymer film and transparent polyimide film.

[0006] Preferably, the first conductive layer and the second conductive layer are both metal electrode layers with a grid structure; the first conductive layer is formed on the surface of the first transparent substrate by yellow light etching technology, embossing technology or chemical addition technology, and the second conductive layer is formed on the surface of the second transparent substrate by yellow light etching technology, embossing technology or chemical addition technology.

[0007] Preferably, the material of the metal electrode layer includes but is not limited to gold, silver and copper.

[0008] Preferably, the visible light transmittance of the metal electrode layer is greater than 90%, and the thickness is 2-10 μm; the grid structure is composed of a plurality of thin wires, the width of the thin wires is less than 15 μm, and the distance between adjacent thin wires is greater than 100 μm.

[0009] Preferably, the perovskite layer is coated on the surface of the first conductive layer and fills the grooves of the grid structure of the first conductive layer; the hole transport layer is coated on the surface of the second conductive layer and fills the grooves of the grid structure of the second conductive layer; the outer side surface of the perovskite layer is in contact with the outer side surface of the hole transport layer.

[0010] Preferably, the perovskite layer and the hole transport layer are prepared sequentially by dry coating technology or wet coating technology.

[0011] Preferably, the material of the hole transport layer is TiO2.

[0012] Preferably, the thickness of the perovskite layer is 200-300 nm, and the thickness of the hole transport layer is 300-400 nm.

[0013] Compared with the existing technology, the beneficial effects of the present invention are: the present invention adopts a first transparent substrate and a second transparent substrate made of flexible materials, and respectively makes a first conductive layer and a second conductive layer on them. Through the above-mentioned structural design, the perovskite battery has flexible and transparent characteristics, expands the application range of the perovskite battery, and helps to improve the service life and photoelectric conversion rate of the perovskite battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of a flexible perovskite battery according to an embodiment of the present invention;

[0015] exist Figure 1 , the corresponding relationship between the names of the components and the numbers in the accompanying drawings is: 1—first transparent substrate, 2—first conductive layer, 3—perovskite layer, 4—hole transport layer, 5—second conductive layer, 6—second transparent substrate. DETAILED DESCRIPTION

[0016] The following embodiments of the present invention are further described in detail with reference to the accompanying drawings and examples. The accompanying drawings are for reference only and are not intended to limit the scope of the present invention. The following examples are intended to illustrate the present invention but are not intended to limit the scope of the present invention.

[0017] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0019] Please refer to Figure 1 The utility model provides a flexible perovskite battery, including a first transparent substrate 1, a first conductive layer 2, a perovskite layer 3, a hole transport layer 4, a second conductive layer 5 and a second transparent substrate 6; the first transparent substrate 1 and the second transparent substrate 6 are both flexible materials, the first conductive layer 2 is prepared on the surface of the first transparent substrate 1, the second conductive layer 5 is prepared on the surface of the second substrate, and the first conductive layer 2 and the second conductive layer 5 are arranged opposite to each other; the perovskite layer 3 and the hole transport layer 4 are arranged between the first conductive layer 2 and the second conductive layer 5.

[0020] In the embodiment of the present invention, the first transparent substrate 1 layer and the second transparent substrate 6 layer are both made of flexible materials. By preparing the first conductive layer 2 and the second conductive layer 5 on the flexible material and controlling the line width and spacing of the first conductive layer 2 and the second conductive layer 5, the entire battery has flexible and transparent characteristics, which greatly increases its scope of use and can be arranged on some curved surfaces, such as automobile glass.

[0021] Preferably, the first transparent substrate 1 and the second transparent substrate 6 are both polymer transparent substrates.

[0022] Preferably, the first transparent substrate 1 and the second transparent substrate 6 include, but are not limited to, PET film, cycloolefin polymer film and transparent polyimide film.

[0023] Preferably, the first conductive layer 2 and the second conductive layer 5 are both metal electrode layers with a grid structure; the first conductive layer 2 is formed on the surface of the first transparent substrate 1 by yellow light etching technology, embossing technology or chemical addition technology, and the second conductive layer 5 is formed on the surface of the second transparent substrate 6 by yellow light etching technology, embossing technology or chemical addition technology.

[0024] In this embodiment, in order to increase the transparency of the battery, the first conductive layer 2 and the second conductive layer 5 use a metal electrode layer with a grid structure, and the metal electrode layer can be directly prepared on the first transparent substrate 1 or the second transparent substrate 6 by using precision processing techniques such as yellow light etching technology, imprinting technology or chemical addition technology. The line width and spacing of the metal electrode layer can be controlled within an appropriate range, and the direct preparation method reduces the transfer process and improves the processing yield.

[0025] In addition, the structure of the metal electrode layer is a grid structure, which adopts a grid shape that is almost invisible to the naked eye, so that a conductive layer with good transparency and dielectric properties is formed on the first transparent substrate 1 and the second transparent substrate 6.

[0026] Preferably, the material of the metal electrode layer includes but is not limited to gold, silver and copper.

[0027] Preferably, the metal electrode layer has a visible light transmittance greater than 90% and a thickness of 2 to 10 μm. The grid structure is composed of multiple fine wires, each less than 15 μm wide and with a distance between adjacent wires greater than 100 μm. In this embodiment, the width and spacing of the metal wires are controlled within a certain range to enhance the invisibility of the metal electrode layer, enabling the perovskite cell to be installed on media such as windows, glass panels, and windshields without obstructing vision.

[0028] Preferably, the perovskite layer 3 is coated on the surface of the first conductive layer 2 and fills the grooves of the grid structure of the first conductive layer 2; the hole transport layer 4 is coated on the surface of the second conductive layer 5 and fills the grooves of the grid structure of the second conductive layer 5; the outer side surface of the perovskite layer 3 is in contact with the outer side surface of the hole transport layer 4.

[0029] Preferably, the perovskite layer 3 and the hole transport layer 4 are prepared sequentially by dry coating technology or wet coating technology.

[0030] Preferably, the hole transport layer 4 is made of TiO2.

[0031] Preferably, the thickness of the perovskite layer 3 is 200-300 nm, and the thickness of the hole transport layer 4 is 300-400 nm.

[0032] Compared with the existing technology, the beneficial effects of the present invention are: the present invention adopts a first transparent substrate and a second transparent substrate made of flexible materials, and respectively makes a first conductive layer and a second conductive layer on them. Through the above-mentioned structural design, the perovskite battery has flexible and transparent characteristics, expands the application range of the perovskite battery, and helps to improve the service life and photoelectric conversion rate of the perovskite battery.

[0033] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. A flexible perovskite battery, characterized in that: The invention comprises a first transparent substrate (1), a first conductive layer (2), a perovskite layer (3), a hole transport layer (4), a second conductive layer (5) and a second transparent substrate (6); the first transparent substrate and the second transparent substrate are both made of flexible materials, the first conductive layer is prepared on the surface of the first transparent substrate, the second conductive layer is prepared on the surface of the second transparent substrate, and the first conductive layer and the second conductive layer are arranged opposite to each other; the perovskite layer and the hole transport layer are arranged between the first conductive layer and the second conductive layer.

2. The flexible perovskite battery according to claim 1, characterized in that The first transparent substrate and the second transparent substrate are both polymer transparent substrates.

3. The flexible perovskite battery according to claim 2, characterized in that: The first transparent substrate and the second transparent substrate include, but are not limited to, a PET film, a cycloolefin polymer film, and a transparent polyimide film.

4. The flexible perovskite battery according to claim 1, characterized in that The first conductive layer and the second conductive layer are both metal electrode layers with a grid structure; the first conductive layer is formed on the surface of the first transparent substrate by yellow light etching technology, embossing technology or chemical addition technology, and the second conductive layer is formed on the surface of the second transparent substrate by yellow light etching technology, embossing technology or chemical addition technology.

5. The flexible perovskite battery according to claim 4, characterized in that: The material of the metal electrode layer includes but is not limited to gold, silver and copper.

6. The flexible perovskite battery according to claim 4, characterized in that The metal electrode layer has a visible light transmittance greater than 90% and a thickness of 2-10 μm. The grid structure is composed of a plurality of thin wires, the width of the thin wires is less than 15 μm, and the distance between adjacent thin wires is greater than 100 μm.

7. The flexible perovskite battery according to claim 4, characterized in that: The perovskite layer is coated on the surface of the first conductive layer and fills the grooves of the grid structure of the first conductive layer; the hole transport layer is coated on the surface of the second conductive layer and fills the grooves of the grid structure of the second conductive layer; the outer side surface of the perovskite layer is in contact with the outer side surface of the hole transport layer.

8. The flexible perovskite battery according to claim 7, characterized in that: The perovskite layer and the hole transport layer are prepared sequentially by dry coating technology or wet coating technology.

9. The flexible perovskite battery according to any one of claims 1 to 8, characterized in that The material of the hole transport layer is TiO2.

10. The flexible perovskite battery according to claim 9, characterized in that: The thickness of the perovskite layer is 200-300 nm, and the thickness of the hole transport layer is 300-400 nm.

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