Interconnected flexible solar cell and fabrication method thereof

A technology of solar cells and flexible cells, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as complicated process operation and difficult realization of ohmic contact, and achieve the effects of increasing light-receiving area, enhancing conductive contact, and simplifying process

Active Publication Date: 2014-06-04
紫石能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The first object of the present invention is to provide an interconnected flexible solar cell, which adopts a conductive connection structure, saves the need for wire connection, and overcomes the shortcomings of the prior art such as difficult realization of ohmic contact and complicated process operation.

Method used

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  • Interconnected flexible solar cell and fabrication method thereof
  • Interconnected flexible solar cell and fabrication method thereof
  • Interconnected flexible solar cell and fabrication method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] see figure 1 , figure 2 with image 3 , an interconnected flexible solar cell, including three flexible solar cell units, the flexible solar cell unit includes a flexible cell substrate 101, a semiconductor material layer 103 and a light-receiving layer 102, and the light-receiving layer 102 is provided with a conductive bus bar 104. Among two adjacent flexible solar battery units, the side of the light-receiving layer 102 of one flexible solar battery unit overlaps the side of the flexible battery substrate 101 of the other flexible solar battery unit, and the light-receiving layer 102 on the light-receiving layer 102 A conductive connection structure 105 is provided between the conductive bus bar 104 and the flexible battery substrate 101 .

[0049] In this embodiment, the conductive bus bar 104 is a comb-shaped structure, including a thin grid line 1041 and a main grid line 1042, one end of the thin grid line 1041 intersects with the main grid line 1042 at 90 degr...

Embodiment 2

[0054] The same or similar technical content in this embodiment as in Embodiment 1 will not be described one by one in this embodiment.

[0055] In this embodiment, the conductive bus bar 104 is a comb-like structure, including thin grid lines 1041 and main grid lines 1042. The thin grid lines 1041 and main grid lines 1042 intersect at an angle of 45 degrees. The line 1041 includes at least two parallel thin grid lines, the width of the thin grid lines 1041 is 0.2 mm, and the parallel thin grid lines are 3 mm apart from each other, the width of the main grid lines 1042 is 4 mm, and the distance between the edges of the main grid lines 1042 and The side portion of the parallel light-receiving layer 102 is 10 mm, and the material of the conductive bus bar 104 in this embodiment is silver.

[0056] In this embodiment, the light-receiving layer 102 of one flexible solar battery unit overlaps the flexible battery substrate 101 of another flexible solar battery unit by 15 mm.

Embodiment 3

[0058] The same or similar technical content in this embodiment as in Embodiment 1 will not be described one by one in this embodiment.

[0059] In this embodiment, the structure of the flexible solar battery unit is the same as that in Embodiment 1; in this embodiment, the conductive connection structure 105 is a row of conductive metal fleece parallel to the flexible battery substrate. In this embodiment, the The conductive metal suede is a suede made of metal copper particles, the diameter of the metal copper particles is 10 microns, and the width of the metal suede is 15 mm.

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Abstract

The invention relates to a thin film solar cell assembly and a fabrication method thereof, and specifically relates to an interconnected flexible solar cell and a fabrication method thereof. The flexible solar cell comprises at least two flexible solar cell units. Each flexible solar cell unit comprises a flexible cell substrate, a semiconductor material layer and a light receiving layer which are stacked successively. The light receiving layer is provided with a conductive bus bar. In two adjacent flexible solar cell units, the edge of the light receiving layer of one flexible solar cell unit is overlapped with the edge of the flexible cell substrate of the other flexible solar cell unit. A conductive connection structure is arranged between the conductive bus bar on the light receiving layer and the flexible cell substrate. The invention further discloses a fabrication method of the interconnected flexible solar cell. According to the invention, the advantage of easy process operation can be realized, the ohmic contact is easy to form, the light receiving area of the solar cell can be increased, and the advantage of good safety performance can be realized.

Description

technical field [0001] The invention relates to a thin-film solar cell assembly and a manufacturing method thereof, in particular to an interconnected flexible solar cell and a manufacturing method thereof. Background technique [0002] At present, solar cells that have been commercially applied mainly include crystalline silicon solar cells and thin-film solar cells; kind. The substrates of thin-film solar cells can be divided into rigid substrates and flexible substrates. For example, glass substrates are rigid substrates, and stainless steel and polyimide substrates are flexible substrates. [0003] Solar cells with flexible substrates are essentially divided into two categories, one is to use laser or mechanical methods to divide the whole battery into small battery cells connected in series or parallel, but the substrate of this type of solar cells is not Separated; U.S. Patent Nos. 6,858,461 and 4,795,500 respectively disclose the method of obtaining series or parall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/05H01L31/0224H01L31/18
CPCY02E10/50H01L31/022425H01L31/03926H01L31/0504H01L31/188Y02P70/50
Inventor 彭东阳童翔张庆钊丁建
Owner 紫石能源有限公司
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