Light trapping structure glue and smooth textured crystalline silicon composite battery and processing method thereof

Abstract

The invention discloses a light trapping structure glue and smooth textured crystalline silicon battery laminated photovoltaic module, and a processing method thereof. The photovoltaic module comprises a photovoltaic panel and an aluminum alloy frame. The photovoltaic cell panel comprises a high-transparency light-trapping master template, a light trapping structure glue layer, a smooth textured crystalline silicon battery, a plane structure glue layer, and TPT plastic which are sequentially stacked together from top to bottom; the aluminum alloy frame is fixed to the periphery of the photovoltaic cell panel; the high-transparency light-trapping master template comprises toughened glass, a high-transparency curing adhesive layer and a high-transmittance light-trapping female mold; and thetempered glass and the high-transmittance light-trapping female mold are bonded together through the high-transparency curing adhesive layer to form the high-transparency light-trapping master template. The smooth textured crystalline silicon battery is composed of a silver electrode and a smooth textured crystalline silicon battery base body. According to the composite battery, the surface defects of the crystalline silicon battery can be obviously reduced, recombination is reduced, the minority carrier lifetime is prolonged, the photoinduced volt effect is enhanced, and the absorption capacity of the crystalline silicon battery to sunlight can be improved, so that the more efficient photoelectric conversion efficiency can be obtained.

Description

technical field [0001] The invention relates to the technical field of solar cell manufacturing, in particular to a photovoltaic module in which a light-trapping structural adhesive is laminated with a smooth suede crystal silicon cell and a processing method thereof. Background technique [0002] Solar cells are devices that use the photovoltaic effect of semiconductor materials to work, and can directly convert the energy of sunlight into electrical energy. Crystalline silicon cells have always occupied a mainstream position in the photovoltaic market due to their cost-effective advantages. The focus of industrial scale production of crystalline silicon solar cells is to reduce cell production costs and improve cell efficiency. The key to improving the photoelectric conversion efficiency of crystalline silicon cells is to increase the light absorption rate and reduce the internal electrical loss. Therefore, in terms of improving battery efficiency, reducing the reflectio...

AI Technical Summary

Problems solved by technology

[0005] In order to make full use of sunlight and reduce the light reflectance of the light-receiving surface of the battery, many new texturing methods have been developed, such as reactive ion etching, photolithography, and mechanical grooving. Problems such as damaged layer and high production cost

At present, chemical texturing technology is mainly used to obtain textured crystalline silicon cells. The surface of the textured crystalline silicon cell has an irregular light-trapping structure, but the texturing process will lead to inconsistent high-temperature diffusion of crystalline silicon, lattice dislocation defects, and increased contact resistance. The emergence of large and other unfavorable factors weakens the photovoltaic effect of crystalline silicon cells and limits the further improvement of photoelectric conversion efficiency of crystalline silicon cells

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