Thin-film solar cell device having colored pattern

Abstract

The invention relates to a thin-film solar cell having a colored pattern. The thin-film solar cell having the colored pattern comprises a solar film unit, a front protective layer, at least one colored pattern and a back protective layer; the solar film unit comprises a light receiving surface and a backlight surface; the front protective layer is arranged on the light receiving surface, and comprises an inside surface adjacent to the light receiving surface, an outside surface and a micro-structure unit formed on the outside surface; the colored pattern is formed on the inside surface of thefront protective layer, and comprises multiple micro-color points having at least one color; the back protective layer is arranged on the backlight surface of the solar film unit; when irradiating each micro-color point through the micro-structure unit, incident light irradiates the light receiving surface of the solar film unit corresponding to the micro-color point through poisson spot generatedby the diffraction phenomenon; the light spreading effect is formed on the light receiving surface; the multi-color-system effect is displayed; and in addition, the shade phenomenon and the hot spoteffect also can be reduced.

Description

technical field [0001] The invention relates to a thin-film solar cell, in particular to a thin-film solar cell with a chromogenic pattern. Background technique [0002] Building integrated photovoltaics (BIPV) mainly integrates solar cell-related materials into buildings (such as glass curtains) to generate electricity through sunlight as the energy source for buildings. However, when the solar cells are integrated into the glass curtain, the exterior design of the building is often limited due to the dark appearance of the solar cells. [0003] Therefore, in order to make the building more beautiful after integrating solar cells, the current common design method is to directly use colored glass as the protective glass of the solar cells, or to form a colored glass on the inner surface of the protective glass of the solar cells. Multi-layer films are used to achieve the light reflection effect, so that the solar cell has a colorful appearance. However, the above two method...

AI Technical Summary

Problems solved by technology

Although it is easier to image and produce various colors by using screen printing pigments, it is easy to cover a large area of ​​sunlight incident on the solar cell, resulting in serious shading phenomenon, which makes the conversion efficiency drop easily due to leakage current in the shading area , more likely to cause hot spot effect and damage solar cells

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