Flexible thin-film solar photoelectric cell and large-scale continuous automatic production method thereof

Abstract

The invention provides a flexible thin-film solar photoelectric cell and a large-scale continuous automatic production method thereof. The solar photoelectric cell comprises an antireflection layer, a transparent upper electrode layer, an isolating layer, a window layer, a protective layer, an absorbing layer, a reflecting layer, a metal back electrode layer, an insulating layer, a substrate layer and a solder flux layer in sequence. The material of the antireflection layer is magnesium fluoride, the material of the transparent upper electrode layer is aluminum zinc oxide, the material of the isolating layer is intrinsic zinc oxide, the material of the window layer is zinc sulfide, the material of the protective layer is sulfur or zinc, the material of the absorbing layer is CIGS (copper indium gallium diselenide) or CIAS (copper indium aluminum diselenide), the material of the reflecting layer is aluminum, the material of the metal back electrode layer is copper-molybdenum-sodium alloy, the material of the insulating layer is titanium oxide, and the material of the substrate layer is stainless steel, copper, aluminum foil or polyimide film. The production method of the flexible thin-film solar photoelectric cell comprises sputtering layer by layer in a closed environment on a continuous automatic production line through a plurality of sputtering methods to form a multilayer structure. The large-scale continuous automatic production method provided by the invention has the advantages of high efficiency, high quality, and low cost.

Description

technical field [0001] The invention belongs to the field of new energy technology, and relates to a novel flexible compound thin-film solar photovoltaic cell and its large-scale continuous automatic production method, in particular to copper indium gallium selenide (CIGS), copper indium aluminum sulfur (CIAS), copper indium gallium sulfur selenide (CIGSS) Large-scale continuous production method of compound photovoltaic cells as light-absorbing layer semiconductor materials. Background technique [0002] Represented by copper indium gallium selenide (CIGS), thin-film solar photovoltaic cells with its compound semiconductor as the light absorption layer have the advantages of low manufacturing cost, high photoelectric conversion rate, long service life, strong radiation resistance and good weak light power generation performance , the rollable excellent characteristics are internationally recognized as the most promising third-generation solar photovoltaic cells. It is curr...

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Problems solved by technology

[0005] In the use of production equipment: At present, segmental production is still the main method in the world. Although there are reports of continuous production from roll to roll, that is, from base material roll to product roll, this is only partial, and it is only the process of preparing the absorbing layer. Continuous production process, while other processes in photovoltaic cell manufacturing are still produced in stages

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