A solar cell based on oxygen-doped zinc telluride nanowire array and its preparation method

Abstract

The invention discloses a solar cell based on an oxygen-doping zinc telluride nanowire array. The solar cell comprises an n-type AZO transparent conducting thin film coaxially coated with a zinc oxide layer, an oxygen-doping zinc telluride layer and a zinc telluride layer at the top end of the nanowire array, the nanowire array coaxially coated with the zinc oxide layer, the oxygen-doping zinc telluride layer and the zinc telluride layer, a PMDS supporting layer coated at the bottom end of the nanowire and a p-type doping high-conductivity monocrystalline silicon layer substrate from top to bottom in sequence; the nanowire array coaxially coated with the zinc oxide layer, the oxygen-doping zinc telluride layer and the zinc telluride layer with intermediate area characteristics are used as a photoelectric absorption layer; and electrodes are led out on the AZO transparent conducting thin film and the p-type doping high-conductivity monocrystalline silicon layer respectively.

Description

technical field [0001] The invention relates to a solar cell structure with a nanowire absorbing layer and a preparation method thereof, belonging to the technical field of solar cells. Background technique [0002] Solar cells are photoelectric devices that convert solar energy into electrical energy by using the photovoltaic effect of photovoltaic semiconductor materials, and have been widely used in production and life. Existing solar cells are generally made of ultra-pure single-crystal silicon wafers, and the thickness of this very expensive material is required to be about 200um in order to absorb as much sunlight as possible, which makes the manufacturing process of silicon-based flat-panel solar cells very difficult. It is complicated, consumes a lot of energy, and costs high. Compared with traditional solar cells, intermediate-band solar cells achieve high-efficiency photoelectric conversion with a relatively simple structure, and the nanowire absorption layer with...

AI Technical Summary

Problems solved by technology

Existing solar cells are generally made of ultra-pure single-crystal silicon wafers, and the thickness of this very expensive material is required to be about 200um in order to absorb as much sunlight as possible, which makes the manufacturing process of silicon-based flat-panel solar cells very difficult. complex, high energy consumption and high cost

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