Stannous sulfide solar battery and preparation method thereof
A solar cell and stannous sulfide technology, applied in the field of solar photovoltaics, can solve the problems of reduced cell efficiency, reduced cell light absorption area, high cost of stannous sulfide solar cells, etc., to achieve improved cell efficiency, increased light absorption area, and reduced production The effect of the process
Active Publication Date: 2014-09-24
TRINA SOLAR CO LTD
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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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[0021] The present invention will be further described now in conjunction with accompanying drawing. These drawings are simplified schematic diagrams only to illustrate the basic structure of the present invention in a schematic way, so they only show the components relevant to the present invention.
[0022] Such as figure 1 figure 2 As shown, a tin sulfide solar cell has a glass substrate 1, on which a P electrode 2 and an N electrode 3 are prepared, the P electrode 2 and the N electrode 3 are finger-shaped, and the width of the grid line of the P electrode 2 is 550-650um, the grid line width of N electrode 3 is 150-250um, the electrode spacing between P electrode 2 and N electrode 3 is 1-2mm, the thickness of P electrode 2 and N electrode 3 is 0.5-1.5um, and on P electrode 2 The P-type stannous sulfide film 4 is completely covered, the thickness of the P-type stannous sulfide film 4 is 1.5-3um, the P-type stannous sulfide film 4 is not in contact with the N electrode 3, ...
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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...
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IPC IPC(8): H01L31/0224H01L31/0296H01L31/18
CPCY02P70/50
Inventor 柳伟
Owner TRINA SOLAR CO LTD