Light scattering multilayered structure and manufacturing method thereof

Abstract

The invention discloses a light scattering multilayered structure and a manufacturing method thereof. The light scattering multilayered structure comprises a transparent baseplate, a first transparent material layer and a second transparent material layer. The transparent baseplate is provided with a first surface and a second surface, the second surface is a sensitive surface, and the first surface is opposite to the second surface. The first transparent material layer is positioned on the first surface, and provided with a plurality of first projections to enable the first transparent material layer to have first average surface roughness. The second transparent material layer is positioned on the second surface, and provided with a plurality of second projections to enable the second transparent material layer to have second average surface roughness, and the first average surface roughness is larger than the second average surface roughness to enhance the light scattering capability of the transparent baseplate. The first average surface roughtness is in a range of between 120 [mu]m and 140 [mu]m.

Description

technical field [0001] The present invention relates to an optical structure and its manufacturing method, and in particular to a light-scattering multilayer structure and its manufacturing method. Background technique [0002] Solar energy is a non-polluting and inexhaustible source of energy. Therefore, when confronted with the pollution and shortage problems faced by fossil energy, how to effectively utilize solar energy has become the focus of the most attention. Among them, since solar cells can directly convert solar energy into electrical energy, they have become the focus of development in the use of solar energy. [0003] At present, solar cells can be roughly divided into superstrate solar cells and substrate solar cells according to the incident direction of sunlight. Specifically, the superstrate solar cell includes a glass substrate, a transparent conductive layer, a P-I-N three-layer silicon film, and a metal layer stacked in sequence, and sunlight enters the ...

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Problems solved by technology

[0005] However, the surface of the transparent conductive layer close to the silicon film is too rough or the surface undulation is too large, which is not conducive to the growth of the silicon layer, and instead leads to poor device characteristics of the solar cell (such as a decrease in open circuit voltage and fill factor).

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