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High adhesion solar cell back electrode and absorber layer structure and manufacturing process

A solar cell and high adhesion technology, applied in the field of solar cells, can solve the problems of improving cell efficiency, poor adhesion, delamination and other problems, and achieve the effects of high adhesion, improved adhesion and high conductivity

Active Publication Date: 2022-06-03
DONGGUAN ZHONGTIAN AUTOMATION TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the preparation of copper indium gallium selenide (CIGS) absorption layer is mainly directly prepared on the back electrode molybdenum (Mo), but due to the poor adhesion between the absorption layer and the back electrode molybdenum, there are often delamination or empty packets. , leading to a serious impact on the efficiency of the battery

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  • High adhesion solar cell back electrode and absorber layer structure and manufacturing process
  • High adhesion solar cell back electrode and absorber layer structure and manufacturing process

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Embodiment Construction

[0023] The present invention will be described in detail below with reference to the accompanying drawings.

[0024] like figure 1 , figure 2 As shown, the structure of the high-adhesion solar cell back electrode 1 and the absorption layer 2 of the present invention includes the absorption layer 2 and the back electrode 1, and the back electrode 1 includes a silver base layer 13 and a honeycomb panel body, and the honeycomb panel body includes aluminum The layer 11 and the molybdenum layer 12 are arranged in sequence along the light introduction direction, the aluminum layer 11, the molybdenum layer 12 and the silver base layer 13; The cross section of the hole 14 is in the shape of a regular hexagon, and the regular hexagonal adsorption hole 14 penetrates the molybdenum layer 12 and the aluminum layer 11; It is formed above the molybdenum layer 12 and in the regular hexagonal adsorption holes 14 by physical vapor deposition. In the structure of the high-adhesion solar cel...

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Abstract

The present invention relates to the technical field of solar cells, in particular to a solar cell back electrode and absorbing layer structure and manufacturing process with high adhesion, which includes the absorbing layer and the back electrode, and the back electrode includes a silver-based base layer and a honeycomb plate body, and the honeycomb plate body includes Aluminum layer and molybdenum layer, along the direction of light introduction, the aluminum layer, molybdenum layer and silver-based layer are arranged in sequence; the honeycomb body is provided with a plurality of regular hexagonal adsorption holes arranged in an array, and the cross-section of the regular hexagonal adsorption holes It is in the shape of a regular hexagon, and the regular hexagonal adsorption holes run through the molybdenum layer and the aluminum layer; the absorption layer includes a CIGS thin film layer and a CIGS filler, and the CIGS thin film layer and the CIGS filler are respectively formed on the molybdenum layer by physical vapor deposition. , Formed in the positive hexagonal adsorption hole. The back electrode and absorbing layer structure and manufacturing process of the solar cell with high adhesive force of the present invention have higher adhesive force between the back electrode and the absorbing layer, which is convenient for improving the photoelectric conversion efficiency of the battery.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to the structure and fabrication process of a back electrode and an absorption layer of a solar cell with high adhesion. Background technique [0002] Copper indium gallium selenide (CIGS) series solar cells are thin-film solar cells with the highest photoelectric conversion efficiency. Made of flexible photovoltaic building materials. At present, the preparation of the copper indium gallium selenide (CIGS) absorber layer is mainly prepared directly on the back electrode molybdenum (Mo), but due to the poor adhesion between the absorber layer and the back electrode Mo, delamination or vacancy often occurs. , resulting in a serious impact on the efficiency of the battery. [0003] Therefore, it is necessary to provide high adhesion solar cell back electrode and absorber layer structures and fabrication processes. SUMMARY OF THE INVENTION [0004] The purpose of the present i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/0224H01L31/032H01L31/0352H01L31/18
CPCH01L31/022425H01L31/0322H01L31/0352H01L31/18Y02P70/50
Inventor 胡盛明隆通
Owner DONGGUAN ZHONGTIAN AUTOMATION TECH