Micro-nano heterojunction high-efficiency inorganic thin film solar cell and preparation method thereof

Abstract

The invention belongs to the technical field of thin film cells, particularly relates to a micro-nano heterojunction high-efficiency inorganic thin film solar cell and a preparation method thereof, and provides the following scheme aiming at the problem of low energy conversion rate. The micro-nano heterojunction high-efficiency inorganic thin film solar cell comprises a light absorption layer and an FTO conductive glass layer, the light absorption layer is composed of a light absorption base layer and multiple nanometer channels, the material of the light absorption base layer is antimony trioxide, the existence form of the material of the light absorption base layer is a crystal form, the multiple nano channels are evenly arranged in the light absorption base layer in a cutting mode in a rectangular array mode, the nano channels are in vertical orientation, the nano channels adopt ZnO nano arrays and TiO2 nano arrays, the ZnO nano arrays and the TiO2 nano arrays form linear inorganic BHJs, and the light absorption layer is installed on the surface of the FTO conductive glass layer. The solar cell has high energy conversion efficiency, can be used as an ideal electron acceptor material and transmission material, and is simple in preparation process.

Description

technical field [0001] The invention relates to the technical field of thin-film batteries, in particular to a micro-nano heterojunction high-efficiency inorganic thin-film solar cell and a preparation method thereof. Background technique [0002] Thin-film solar cell, as the name implies, is to prepare a thin film into a solar cell. It uses very little silicon, which makes it easier to reduce costs. At the same time, it is not only a high-efficiency energy product, but also a new type of building material, which is easier to perfectly integrate with buildings. Thin-film solar cells have attracted much attention due to their cheap substrate materials (such as glass, stainless steel, polyester film), flexibility, adjustable material band gap, and low temperature coefficient of components. The application scale in the photovoltaic market is gradually expanding. Under the background of continuous shortage of silicon raw materials in the international market, thin-film solar cel...

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Problems solved by technology

[0004] Existing thin-film solar cells lack direct transmission channels for electrons, which results in energy loss during the conversion process due to a long transmission distance, resulting in low energy conversion efficiency; and the existing thin-film solar cells are in The process of preparation is more complicated, resulting in higher production costs

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