Multi-energy level silicon based thin-film solar cell

Abstract

The invention discloses a multi-energy level silicon-based thin film solar cell, comprising a substrate, a transparent conductive film, a P-typed semiconductor layer, an intrinsic semiconductor layer, an N-typed semiconductor layer, and an electrode; one side of the substrate is used for lighting; the transparent conductive film is formed on the substrate and used for taking out power and upgrading the photoelectric conversion efficiency; the P-typed semiconductor layer is formed on the transparent conductive film and used for generating a cavity; the intrinsic semiconductor layer is formed above the P-typed semiconductor layer and used for improving the electrical characteristics of the solar cell; the N-typed semiconductor layer is formed above the intrinsic semiconductor layer and used for generating an electron; and the electrode is formed above the N-typed semiconductor layer and used for taking out power and upgrading the photoelectric conversion efficiency. The multi-energy level silicon-based thin film solar cell uses the thin films of different materials so as to improve the light wavelength absorption range thereof and enhance the photovoltaic conversion efficiency of the solar cell.

Description

technical field [0001] The invention relates to a silicon-based thin-film solar cell, in particular to a P-i-N silicon-based thin-film solar cell with different energy levels. Different thin-film materials are used to increase the absorption range of light wavelength and increase the photoelectric conversion efficiency of the solar cell. Background technique [0002] At present, due to the international energy shortage, countries all over the world have been continuously researching and developing various alternative energy sources, among which solar cells that generate electricity from solar energy have attracted the most attention. Solar cells are easy to use, inexhaustible, inexhaustible, no waste, no pollution, no rotating parts, no noise, can block radiant heat, long service life, size can be changed at will, and interact with buildings Combined with the advantages of popularity and popularization, it uses solar cells as energy sources. [0003] In the 1970s, silicon s...

AI Technical Summary

Problems solved by technology

However, there has been no silicon-based thin-film solar cell with multiple energy levels in a single P-i-N structure in the past.

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