Solar cell based on III-V group compound semiconductor/silicon nanometer bore column array and preparation method thereof

Abstract

The invention discloses a solar cell based on an III-V group compound semiconductor/silicon nanometer bore column array, which comprises an upper contact electrode, a lower contact electrode, a transparent conductive film, an n-type III-V group compound semiconductor, a p-type silicon nanometer bore column array, a p-type monocrystalline silicon layer and a metal conductive film layer, wherein the p-type silicon nanometer bore column array is covered on the top surface of the p-type monocrystalline silicon layer; the n-type III-V group compound semiconductor and the p-type silicon nanometer bore column array form heterojunction; the transparent conductive film is deposited on the surface of the n-type III-V group compound semiconductor; and a layer of metal conductive film serving as a back electrode is deposited on the bottom surface of the p-type monocrystalline silicon layer. In the solar cell, silicon nanoparticles and an III-V group compound semiconductor nanometer unit have continuous particle size distribution, so spectra can be absorbed continuously within a certain range, photons positioned in different frequency spectra in sun light can efficiently excite photon-generated carriers, and the photoelectric conversion efficiency of the cell is improved effectively.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials and new energy, and in particular relates to a solar cell based on a III-V compound semiconductor / silicon nanohole column array and a preparation method thereof. Background technique [0002] At present, under the background of the intensifying world energy crisis, with the continuous innovation of traditional silicon cells and the emergence of new solar cells, new concepts have begun to appear in solar cell technology. In a sense, it heralds the development of solar cells Technology trends. At present, the solar cells on the market are mainly silicon-based solar cells with mature technology, but the manufacturing cost of the cells is high and the conversion efficiency is low. New solar cells are mainly developed in the direction of thin film, laminated and new concept solar cells, especially the introduction of nanotechnology, which provides a new way to improve the efficiency of solar cel...

AI Technical Summary

Problems solved by technology

At present, the solar cells on the market are mainly silicon-based solar cells with mature technology, but the manufacturing cost of the cells is high and the conversion efficiency is low.

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