Thin-film solar cell

Abstract

The invention provides a thin-film solar cell, which can solve the problem that a solar cell taking a stainless steel foil as a back connection conductive material can only use an amorphous silicon thin-film semiconductor and cannot be suitable for other semiconductor materials. The thin-film solar cell comprises the following laminated layers and components: a conductive substrate, an insulating layer, a mirror surface material layer, a contact conductive layer, an NP type semiconductor lower layer, an NP type semiconductor upper layer and a transparent conductive layer, and is provided with a plurality of through holes, a through insulator and a conductor, wherein the through holes penetrate through the mirror surface material layer, the contact conductive layer and the NP type semiconductor lower layer, the insulator is arranged in the through hole and is connected with the NP type semiconductor upper layer and the insulating layer, the conductor is arranged in the through insulator to be electrically connected with the transparent conductive layer and the conductive substrate, charges can be output by the conductive substrate and the mirror surface material layer, and various semiconductor materials can be used through selection of matching materials of the contact conductive layer and the NP type semiconductor lower layer.

Description

technical field [0001] The invention relates to a thin-film solar cell, in particular to a thin-film solar cell with multiple through-hole conduction paths. Background technique [0002] Among solar cells, the main material of thin-film solar cells is light and thin, so it saves materials, but its photoelectric conversion efficiency is low. If the photoelectric conversion efficiency can be improved, its economic value will be increased by virtue of its low cost advantage. [0003] Traditional thin-film solar cells, such as p-i-n type silicon thin-film solar cells, have very fine craftsmanship and manufacturing, so traditional solar cells must be very flat from the glass substrate to be absolutely flat, otherwise they cannot be manufactured and processed. Glass is used as the substrate, but this kind of glass substrate is not an ordinary glass material, and its production process is troublesome, and the larger the area, the higher the technical requirements, so it is expensiv...

AI Technical Summary

Problems solved by technology

[0002] Among solar cells, the main material of thin-film solar cells is light and thin, so it saves materials, but its photoelectric conversion efficiency is low. If the photoelectric conversion efficiency can be improved, its economic value will be increased by virtue of its low cost advantage

[0003] Traditional thin-film solar cells, such as p-i-n type silicon thin-film solar cells, have very fine craftsmanship and manufacturing, so traditional solar cells must be very flat from the glass substrate to be absolutely flat, otherwise they cannot be manufactured and processed. Glass is used as the substrate, but this kind of glass substrate is not an ordinary glass material, and its production process is troublesome, and the larger the area, the higher the technical requirements, so it is expensive and fragile

In addition, the rigidity of the glass substrate is the main reason why the solar cell cannot be made flexible, and because it is not flexible, the installation site is fixed, it is not suitable for use in places that require curved surfaces, and it cannot resist strong winds, heavy rain or External forces such as ocean waves, these external forces are likely to break and damage the glass substrate of the solar cell and make it unusable, so its application is limited

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