Method for Manufacturing Perovskite/Silicon Tandem Solar Cells

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This invention describes a method for manufacturing high-efficiency tandem solar cells composed of perovskite and silicon layers. The process involves creating a special front surface on a silicon wafer featuring regular arrays of inverted pyramids (micrometer-sized indentations), which reduces light reflection and allows a perovskite layer to be deposited in a structure-conforming manner using spin coating. This results in improved light absorption and the potential for greater solar cell efficiency.

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• Production of high-efficiency perovskite/silicon tandem solar panels for residential, commercial, or utility-scale photovoltaic (PV) installations.
• Development of more efficient solar modules for integration into building facades, windows, or rooftops.
• Manufacturing of lightweight, efficient solar cells for portable or off-grid energy solutions.
• Industrial-scale fabrication of tandem solar cells using cost-effective and scalable processes (e.g., spin coating, nanoimprint lithography).

BenefitsContent extracted from patent full text and abstract with AI.

• Significantly reduced light reflection from the silicon surface, leading to better light absorption and higher power conversion efficiency.
• Ability to produce structure-conforming perovskite layers by spin coating, allowing for uniform and high-quality layers even on textured surfaces.
• Improved scalability and lower manufacturing costs, as the process is compatible with mass production techniques like nanoimprint lithography and spin coating.
• Enhanced overall efficiency of tandem solar cells compared to conventional silicon cells, enabling more electricity generation from the same sunlight.
• Potential for customizing surface texturing to optimize light management for various application needs.

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Patent Abstract

The invention relates to a method for producing perovskite/silicon tandem solar cells, characterised by the production of a frontal structure on a silicon wafer, the structure being formed from inverted pyramids, with edge lengths from 1.5 µm to 6 µm for a base of the pyramids and 1 µm to 4 µm for the depth of the pyramids with a spacing from 1.5 µm to 6 µm, which allows a perovskite layer to be applied with structural conformity by means of spin coating.