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Transparent conducting film used in crystalline silicon solar cell and preparation method thereof

A transparent conductive film, solar cell technology, applied in circuits, electrical components, semiconductor devices, etc., can solve the problem of reducing the effective area of ​​solar cells, and achieve the effects of improving photoelectric conversion efficiency, reducing costs, and increasing effective area.

Active Publication Date: 2013-07-10
宿迁威科新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the purpose of the present invention is to provide a kind of transparent conductive film that is used for the front side of the solar cell sheet, replaces the busbar silver paste, solves the problem that the effective area of ​​the solar cell covered by the busbar silver paste reduces, and improves the solar energy. The photoelectric conversion efficiency of battery; The second purpose is to provide the preparation method of this transparent conductive film with simple process and low cost

Method used

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  • Transparent conducting film used in crystalline silicon solar cell and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] In a group of extrusion units consisting of the first single-screw extruder and the second single-screw extruder, butene-modified polyethylene and polyethylene terephthalate are sequentially added, and the first single-screw extruder The screw speed of the extruder is 55rpm, the extrusion rate of the material at the outlet of the die head is 80%, the temperature of the outlet material is 150°C, the screw speed of the second single screw extruder is 85rpm, the extrusion rate of the material at the outlet of the die head is 20%, and the temperature of the outlet material is 280 ℃.

[0030] The die head slit size of both extruders is 0.5mm, the temperature of the film pulled by the first roller is lower than 110°C, the speed is 8m / min, the speed of the second roller is 10m / min, and then the film and metal wire pass through the third The roller and the fourth roller are rolled, finally cooled, pulled, and rolled. The thickness of the conductive film prepared by this method ...

Embodiment 2

[0032] In a group of extrusion units consisting of the first single-screw extruder and the second single-screw extruder, butene-modified polyethylene and polyethersulfone are sequentially added, and the screw speed of the first single-screw extruder is 55rpm 1. The extrusion rate of material at the outlet of the die is 90%, the temperature of the outlet material is 150°C, the screw speed of the second single screw extruder is 80rpm, the extrusion rate of the material at the outlet of the die is 10%, and the temperature of the outlet material is 280°C.

[0033] The slit size of the two extruder die heads is 0.5mm, the temperature of the film drawn by the first roller is lower than 110°C, the speed is 6m / min, and the speed of the second roller is 10m / min, and then the film and the metal wire pass through the third The roller and the fourth roller are rolled, finally cooled, pulled, and rolled. The thickness of the conductive film prepared by this method is 0.1mm. The conductive f...

Embodiment 3

[0035] In a group of extrusion units consisting of the first single-screw extruder and the second single-screw extruder, octene-modified polyethylene and polyethylene terephthalate are sequentially added, and the first single-screw extruder The screw speed of the extruder is 75rpm, the extrusion rate of the material at the outlet of the die head is 80%, the temperature of the outlet material is 180°C, the screw speed of the second single screw extruder is 85rpm, the extrusion rate of the material at the outlet of the die head is 20%, and the temperature of the outlet material is 280°C ℃.

[0036] The die head slit size of both extruders is 0.4mm, the temperature of the film pulled by the first roller is lower than 110°C, the speed is 8m / min, the speed of the second roller is 10m / min, and then the film and metal wire pass through the third The roller and the fourth roller are rolled, finally cooled, pulled, and rolled. The thickness of the conductive film prepared by this metho...

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Abstract

The invention discloses a transparent conducting film used in a crystalline silicon solar cell. The thickness of the transparent conducting film is 0.05-0.2 millimeter, and the refractive index is 1.8-2.0. The transparent conducting film comprises an upper layer structure and a lower layer structure, wherein the upper layer structure is composed of a modified polyethylene film body and metal wires, and the transparent conducting film makes contact with the front face of a battery slice of the crystalline silicon solar cell through the upper layer structure. The lower layer structure is made of a transparent polymer, and the transparent conducting film makes contact with a glass face of the crystalline silicon solar cell through the lower layer structure.

Description

technical field [0001] The invention relates to a transparent conductive film for crystalline silicon solar cells and a preparation method thereof. Background technique [0002] With the increasing shortage of petroleum energy, solar energy will become the star energy among new energy sources. The solar photovoltaic (PV) industry refers to the industry that converts sunlight energy into electrical energy through solar cells. Solar energy, as a new and renewable energy with great development potential, has already attracted widespread attention from all over the world. At present, solar cells at home and abroad are dominated by single and polycrystalline silicon cells. The basic structure of existing crystalline silicon solar cells is It consists of a crystalline silicon with a planar semiconductor n-p, plus a back electrode and a front electrode. The front electrode is very critical. It can neither block the incident light to ensure that most of the incident light enters th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0224H01L31/18
CPCY02P70/50
Inventor 赵世界唐铭徽
Owner 宿迁威科新材料有限公司