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A silicon-based solar cell, its preparation method and preparation device, and its surface structure

A technology for solar cells and solar cell sheets, applied in the field of solar cells, can solve the problems of high cost, complicated operation, affecting the development of silicon-based solar cells, etc., and achieves improved quantum efficiency, improved light trapping effect, and increased photogenerated carriers. Effect

Active Publication Date: 2017-04-05
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods are cumbersome and costly, which may affect the future development of silicon-based solar cells.

Method used

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  • A silicon-based solar cell, its preparation method and preparation device, and its surface structure
  • A silicon-based solar cell, its preparation method and preparation device, and its surface structure
  • A silicon-based solar cell, its preparation method and preparation device, and its surface structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A method for preparing a silicon-based solar cell, comprising the steps of:

[0039] 1) Preparation of reaction solution: 0.01mol / L silver nitrate aqueous solution and a 0.007mol / L reducing reagent solution capable of reacting with silver nitrate aqueous solution to form silver elemental particles are prepared after mixing with a volume ratio of 1:50 to obtain a reaction solution Solution; In this example, sodium citrate solution was used as reducing agent solution.

[0040] 2) Preparation of metal particles: heating the silicon-based solar cells to 100°C, using a heating device for heating the silicon-based solar cells 6, and a spraying device 5 for spraying the reaction solution onto the heated silicon-based solar cells , and a preparation device for a silicon-based solar cell of a container for containing an etching solution, spraying a reaction solution onto a heated silicon-based solar cell, and forming corresponding silver particles on the surface thereof;

[004...

Embodiment 2

[0047] A method for preparing a silicon-based solar cell, comprising the steps of:

[0048] 1) Preparation of reaction solution: 0.03mol / L gold tetrachlorate aqueous solution and a kind of reducing reagent solution of 0.035mol / L that can react with gold tetrachlorate aqueous solution to generate gold simple substance particles are mixed with a volume ratio of 1:300 Then prepare the reaction solution; in this example, sodium citrate solution is used as the reducing agent solution.

[0049] 2) Preparation of metal particles: heating the silicon-based solar cell to 200°C, using a heating device including a heating device 6 for heating the silicon-based solar cell, and a spraying device 5 for spraying the reaction solution onto the heated silicon-based solar cell , and a preparation device for a silicon-based solar cell of a container for containing an etching solution, spraying a reaction solution onto a heated silicon-based solar cell, and forming corresponding gold particles on...

Embodiment 3

[0053] A method for preparing a silicon-based solar cell, comprising the steps of:

[0054] 1) Preparation of reaction solution: 0.05 mol / L copper nitrate aqueous solution and a 0.05 mol / L reducing reagent solution capable of reacting with copper nitrate aqueous solution to form copper elemental particles are prepared by mixing at a volume ratio of 1:1 to obtain a reaction solution Solution; Adopt sodium borohydride solution as reducing agent solution in this example.

[0055] 2) Preparation of metal particles: heating the silicon-based solar cells to 400°C, using a heating device for heating the silicon-based solar cells 6, and a spraying device 5 for spraying the reaction solution onto the heated silicon-based solar cells , and a silicon-based solar cell manufacturing device for a container for containing an etching solution, spraying a reaction solution onto a heated silicon-based solar cell to form corresponding copper particles on the surface thereof;

[0056] 3) Etching...

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Abstract

The invention provides a surface structure of a silicon solar cell. The surface structure of the silicon solar cell comprises pits formed in the surface of the silicon solar cell and metal particles located in the pits. The invention further provides the silicon solar cell which is of the surface structure and high in quantum efficiency and a method capable of manufacturing the silicon solar cell, wherein the method is easy to operate and low in cost. The manufacturing method of the silicon solar cell includes the following steps that a reaction solution is prepared, the metal particles are prepared, and etching is performed to obtain the silicon solar cell. The invention further provides a manufacturing device of the silicon solar cell. The manufacturing device of the silicon solar cell comprises a heating device used for heating the silicon solar cell piece, a spraying device used for spraying the reaction solution to the heated silicon solar cell piece, and a containing device used for containing etchant. The texture structure of the surface of the silicon solar cell is changed through the pits in which the metal particles are located so that synergistic effect can be generated, when light is shone to the metal particles, the surface plasma resonance effect is generated, and thus the conversion efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to a silicon-based solar cell, a preparation method and device thereof, and a surface structure thereof. Background technique [0002] Recently, with the development of research and production technology, solar cells will play a major role in the field of traditional energy. The current market mainly includes silicon-based solar cells, multi-component compound thin-film solar cells, and organic dye-sensitized solar cells. Among them, silicon-based solar cells have become the leading product of solar cells due to their advantages in raw material reserves, maintaining a market share of more than 80%. Compared with other types of solar cells, its scientific research and production are relatively mature and stable, and its photoelectric conversion efficiency is relatively high. In the next few years, the huge demand for photovoltaic power generation in various countries...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/0352H01L31/04H01L31/18
CPCH01L31/02363H01L31/028Y02E10/547Y02P70/50
Inventor 刘生忠刘雅慧
Owner SHAANXI NORMAL UNIV
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