Stannous sulfide solar battery and preparation method thereof

Abstract

The invention relates to a stannous sulfide solar battery and a preparation method of the stannous sulfide solar battery. The stannous sulfide solar battery is provided with a glass substrate, wherein the glass substrate is prepared with a P electrode and an N electrode which are in insert finger shapes; a P type stannous sulfide film is covered on the P electrode and has the thickness of 1.5-3mu m; the P type stannous sulfide film is not contacted with the N electrode; the P type stannous sulfide film, the surface of the N electrode and a gap beyond the P type stannous sulfide film and the N electrode are respectively and completely covered with a zinc sulfide film; and the thickness of the zinc sulfide film exceeding the P type stannous sulfide film is 0.5-1mu m. By adopting the stannous sulfide solar battery with the structure, the light absorption area of the solar battery is enlarged, and the battery efficiency is improved. Furthermore, the manufacturing process of a transparent conducting layer is omitted, so that the manufacturing cost of the battery is lowered.

Description

technical field [0001] The invention relates to the field of solar photovoltaics, in particular to a tin sulfide solar cell and a preparation method thereof. Background technique [0002] Tin sulfide (SnS) solar cells have been paid attention to by researchers because of their abundant SnS raw materials in the absorbing layer, safety, non-toxicity, and low price. At present, the method of lamination deposition is widely used in the preparation of tin sulfide (SnS) solar cells. Zinc Sulfide / Magnesium Fluoride / Indium Tin Metal Oxide (Transparent Conductive Oxide) / Silver). Because the ITO used in the preparation process is used as a transparent conductive layer, the ITO contains rare metal indium, and the noble metal Ag is used as a conductive electrode, resulting in high cost of tin sulfide solar cells. At the same time, in the tin sulfide solar cell, the light-receiving surface is affected by the metal grid lines, the light-absorbing area of ​​the cell is reduced, and the c...

AI Technical Summary

Problems solved by technology

Because the ITO used in the preparation process is used as a transparent conductive layer, the ITO contains rare metal indium, and the noble metal Ag is used as a conductive electrode, resulting in high cost of tin sulfide solar cells

At the same time, in the tin sulfide solar cell, the light-receiving surface is affected by the metal grid, the light absorption area of ​​the cell is reduced, and the cell efficiency is reduced.

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