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Thin film of solar battery structure, thin film of solar battery array and manufacturing method thereof

A solar cell and manufacturing method technology, which is applied in the directions of final product manufacturing, sustainable manufacturing/processing, semiconductor/solid-state device manufacturing, etc., can solve the problems of low power generation efficiency and enlarged recombination area, so as to improve power generation efficiency and increase Effective area and effect of reducing connection resistance

Active Publication Date: 2011-07-13
江苏盐新汽车产业投资发展集团有限公司
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Problems solved by technology

[0005] The purpose of the present invention is to at least solve one of the above-mentioned technical defects, especially solve the defect that the recombination area between the two electrodes increases and the power generation efficiency is low

Method used

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  • Thin film of solar battery structure, thin film of solar battery array and manufacturing method thereof
  • Thin film of solar battery structure, thin film of solar battery array and manufacturing method thereof
  • Thin film of solar battery structure, thin film of solar battery array and manufacturing method thereof

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Embodiment Construction

[0018] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0019] The present invention mainly uses the thickness of the substrate to form electrodes on the plane where the thickness direction of the substrate is located, and arranges the electrodes of the solar cell and the light-incoming surface on the same side, thereby effectively reducing the recombination distance and shortening the distance between the electrodes. The distance can reduce the bulk recombination current and improve the power generation efficiency. Moreover, the structure of the present invention has insulating layers on bot...

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Abstract

A thin film solar battery structure and a manufacturing method thereof, and a thin film solar battery array are provided. The manufacturing method of the thin film solar battery structure includes: at least two first trenches are formed by etching semiconductor substrate from the first surface; at least one of the second trench is formed by etching the semiconductor substrate from the second surface; each of the second trench is located between two adjacent first trenches; a first structure is formed on the side wall of at least the first trench; a second structure is formed on the side wall of at least the second trench; the semiconductor substrate is cut or drawn from the first trench and the second trench for forming the thin film solar battery structure, the distance of the electrodes can be reduced effectively, the probability recombination of the electron and the hole can be reduced, the bulk recombination current and the surface bulk recombination current can be reduced, the efficiency of the electrical power can be increased, the thin film solar battery structure and the manufacturing method thereof can reduce the semiconductor material and reduce the manufacturing cost.

Description

technical field [0001] The invention relates to the field of solar cell manufacturing, in particular to a novel, high-efficiency, low-cost thin-film solar cell structure, array and manufacturing method thereof. Background technique [0002] Thin-film solar cell, as the name implies, is to prepare a layer of thin film into a solar cell. It uses very few semiconductor materials, so it is easier to reduce the cost. At the same time, it is not only a high-efficiency energy product, but also a new type of building material, which is easier Realize the perfect combination with architecture. Under the background of continuous shortage of silicon raw materials in the international market, thin-film solar cells have become a new trend and new hotspot in the development of the international photovoltaic market. At present, there are three main types of thin-film batteries that can be industrialized and mass-produced: silicon-based thin-film solar cells, copper indium gallium selenide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/18H01L31/042H01L21/77H01L27/142H01L31/046
CPCY02E10/50Y02P70/50
Inventor 朱慧珑骆志炯尹海洲
Owner 江苏盐新汽车产业投资发展集团有限公司
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