Perovskite solar cell device based on vacuum silicone grease packaging

Abstract

The utility model provides a perovskite solar cell device based on vacuum silicone grease packaging. The perovskite solar cell device sequentially comprises an ITO glass substrate, an ETL layer, a Perovskite layer, an HTL layer, an Au electrode layer and a vacuum silicone grease layer from bottom to top. And the vacuum silicone grease layer is used as a packaging layer. According to the utility model, the vacuum silicone grease is selected, so that bubbles and other byproducts cannot be generated in the packaging process. On the basis of isolating water and oxygen, the performance of the device can be improved. The operation is simple, the cost is low, and repeated use can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of perovskite solar cells, in particular to a perovskite solar cell device based on vacuum silicone grease packaging. Background Art

[0002] Perovskite solar cells (PSCs) have attracted considerable attention due to their low cost and high efficiency. However, they face challenges such as poor device stability, which remains a key issue on the road to commercialization. To overcome this issue, a robust encapsulation technology must be developed, utilizing suitable materials and structures with high barrier properties to external environments such as water and oxygen to protect the PSC. This primarily involves gap encapsulation and gapless encapsulation. Gap encapsulation can generate bubbles, dust, or moisture over long-term use, leading to degradation of the encapsulation material and affecting the performance and lifespan of the cell. Furthermore, the presence of gaps makes the encapsulation material difficult to control, potentially affecting light transmission and reducing photoelectric conversion efficiency. In the event of a gapless encapsulation failure, repairing or replacing the encapsulation material is difficult and may damage the device, increasing maintenance costs. Utility Model Content

[0003] In view of this, the purpose of the present invention is to provide a perovskite solar cell device encapsulated based on vacuum silicone grease. The selected vacuum silicone grease will not produce bubbles during the encapsulation process, that is, it isolates water and oxygen, and will not produce by-products. It is also simple to operate, low in cost, and reusable.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a perovskite solar cell device based on vacuum silicone grease encapsulation, which includes, from bottom to top, an ITO glass substrate, an ETL layer, a Perovskite layer, a HTL layer, an Au electrode layer and a vacuum silicone grease layer; the vacuum silicone grease layer serves as an encapsulation layer.

[0005] In a preferred embodiment, the ITO glass substrate is specifically ITO conductive glass.

[0006] In a preferred embodiment, the ITO conductive glass is divided into a hole transport layer, a perovskite, an electron transport layer and an electrode.

[0007] In a preferred embodiment, the vacuum silicone grease layer is applied on a smaller glass sheet and then covers a portion of the Au electrode layer.

[0008] In a preferred embodiment, the smaller glass is a 1 cm×2 cm transparent glass.

[0009] Compared with the prior art, the present invention has the following beneficial effects: The present invention utilizes a gapless packaging method, which can better seal solar cell components, improve insulation performance, and reduce interference from external factors on the battery. It can also effectively prevent the penetration of harmful substances such as gas and moisture, thereby extending the life of the battery. Because vacuum silicone grease is used, it does not generate bubbles during the packaging process, and when components need to be repaired or replaced, they can be easily disassembled without damaging the device. In addition to ensuring stability, the performance of perovskite solar devices encapsulated using this method also significantly improves efficiency, open-circuit voltage, and fill. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the structure of a perovskite device according to a preferred embodiment of the present invention;

[0011] Figure 2 This is a schematic top view of the perovskite device structure according to a preferred embodiment of the present invention;

[0012] Figure 3 This is a front view schematic diagram of the perovskite device structure according to a preferred embodiment of the present invention;

[0013] Figure 4 This is a schematic diagram of the structure of a perovskite device according to a preferred embodiment of the present invention;

[0014] Figure 5 This is a schematic diagram of the structure and operation of a perovskite device according to a preferred embodiment of the present invention;

[0015] Figure 6 This is a schematic diagram of conducting photovoltaic testing on packaged and unpackaged devices in a glove box filled with N2 according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present application belongs.

[0018] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application; as used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form, and it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations.

[0019] A perovskite solar cell device based on vacuum silicone grease packaging, reference Figure 1-6 , from bottom to top, it includes an ITO glass substrate, an ETL layer, a Perovskite layer, a HTL layer, an Au electrode layer and a vacuum silicone grease layer; the vacuum silicone grease layer serves as a packaging layer. The technical solution adopted by the utility model to solve its technical problems is: First, vacuum silicone grease is used as a packaging material, which is resistant to high temperatures, aging, ozone, and hydrophobic, and has excellent waterproof, moisture-proof and vacuum sealing properties, and can prevent dust and pollutants from entering the sealing parts. Second, a gapless packaging method is adopted, in which silicone grease is applied to a smaller glass sheet, and then covered on the device, with the leaked electrode for easy testing. However, due to the lubricating effect of the vacuum silicone grease, it is very convenient to disassemble after packaging and will not damage the device.

[0020] This vacuum silicone grease is a non-curing silicone lubricant suitable for electronic and electrical components, connectors, and joints. It seals, protects, and maintains these components. Designed specifically for the automotive, electronics, and other industrial applications, it boasts a white, clear, and transparent appearance, high dielectric strength (i.e., excellent insulation properties), and compatibility with a wide variety of plastics and rubber materials and products.

[0021] The above-mentioned device is 2cm×2cm ITO conductive glass, which is used as the substrate to prepare a perovskite solar cell, which is divided into a hole transport layer, perovskite, electron transport layer and electrode.

[0022] The smaller glass mentioned above is a 1cm x 2cm transparent glass. Apply silicone grease evenly to the transparent glass. Then, directly cover the prepared device except for the electrodes, isolating it from water and air. Finally, wipe off any excess silicone grease.

[0023] Perovskite solar cells are made on a transparent ITO glass substrate. After the glass sheet is treated with UV ozone for 30 minutes, a SnO2 colloidal dispersion solution is spin-coated on the ITO, and then annealed. In an N2 atmosphere, the PCBA solution is spin-coated on the annealed SnO2 layer. Using CB as an anti-solvent (with the addition of silicone grease), the perovskite film is spin-coated using an anti-solvent one-step method. Spiro-OMeTAD is then spin-coated on the perovskite film. Finally, the Au electrode is deposited by thermal evaporation. The structure is as follows Figure 1 shown.

[0024] Place the prepared perovskite device (after steaming the electrode) into a glove box filled with N2, prepare a 1cm×2cm glass, and evenly spread vacuum silicone grease on it. Figure 5 Press it onto the battery, and the final device is as follows Figure 2-Figure 4 shown

[0025] The packaged and unpackaged devices were tested for photovoltaic performance in a glove box filled with N2. The main test was the photoelectric conversion efficiency of the device under standard sunlight. We can see that under the condition of isolating water and oxygen, the performance of the device was significantly improved. Figure 6 shown.

Claims

1. A perovskite solar cell device based on vacuum silicone grease packaging, characterized in that: From bottom to top, it includes an ITO glass substrate, an ETL layer, a Perovskite layer, a HTL layer, an Au electrode layer and a vacuum silicone grease layer; the vacuum silicone grease layer serves as a packaging layer.

2. A perovskite solar cell device based on vacuum silicone grease encapsulation according to claim 1, characterized in that: The ITO glass substrate is specifically ITO conductive glass.

3. A perovskite solar cell device based on vacuum silicone grease encapsulation according to claim 2, characterized in that: The ITO conductive glass is divided into a hole transport layer, a perovskite, an electron transport layer and an electrode.

4. A perovskite solar cell device based on vacuum silicone grease encapsulation according to claim 3, characterized in that: The vacuum silicone grease layer is applied on a smaller glass sheet and then covers a portion of the Au electrode layer.

5. The perovskite solar cell device based on vacuum silicone grease encapsulation according to claim 4, characterized in that: The smaller glass is a transparent glass of 1 cm×2 cm.

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