Thin Film of Solar Battery Structure, Thin Film of Solar Array and Manufacturing Method Thereof

Abstract

The present invention proposes a thin-film solar cell structure, a method for manufacturing the same and a thin-film solar cell array. The method for manufacturing thin-film solar cell structures comprises: forming at least two first trenches through a first surface into said semiconductor substrate, forming at least one second trench through a second surface into said semiconductor substrate, said second trench located between two neighboring said first trenches; forming a first structure on sidewalls of each of said first trenches; to forming a second structure on sidewalls of each of said second trench; and cutting or stretching said semiconductor substrate to form thin-film solar cell structures. The distance between the electrodes can be effectively shortened through the present invention such that the recombination rate between the electrons and the holes can be reduced and the bulk recombination current and the surface recombination current can be reduced to achieve the objective of improving power generation efficiency. The thin-film solar cell structure and the method for manufacturing the same proposed in the present invention can also save semiconductor material and reduce production cost.

Description

FIELD OF THE INVENTION[0001]The present invention relates to the field of solar cell manufacturing, and more specifically, to a new, highly efficient and low-cost thin-film solar cell structure, array and a method for manufacturing the same.BACKGROUND OF THE INVENTION[0002]A thin-film solar cell, just as its name implies, is a solar cell prepared from a thin film, which uses a very small amount of semiconductor material and thus makes it easy to reduce the cost thereof. Meanwhile, it is not only a highly efficient source of energy, but can also be used as a novel building coating material, which makes it easy to realize a perfect combination with architecture. As raw silicon materials continue to be in short supply on the global market, thin-film solar cells have become a new trend and a new focus in development of the global photovoltaic market. At present, there are three types of thin-film cells that have entered the phase of industrialized mass production, i.e. silicon-based thi...

AI Technical Summary

Benefits of technology

[0005]One objective of the present invention lies in solving at least one of the aforesaid technical challenges, in particular, solving the

Problems solved by technology

Furthermore, the investment cost for the existing solar cell structure is rel

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