A kind of preparation method of solar cell sheet

A technology of solar cells and silicon wafers, which is applied in the field of solar cells, can solve the problems of complex production process, slow production speed, manual operation, etc., and achieve the effects of strong versatility, strong practicability, and accurate temperature measurement

Inactive Publication Date: 2017-03-22
ZHEJIANG LATTICEPOWER CO LTD
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Problems solved by technology

[0004] Although the preparation method disclosed in this patent improves the photoelectric conversion efficiency of the battery, manual operation is required in the preparation method, the production process is complicated, and the production speed is slow. Therefore, it is necessary to design a preparation method for solar cells

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  • A kind of preparation method of solar cell sheet
  • A kind of preparation method of solar cell sheet
  • A kind of preparation method of solar cell sheet

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Embodiment Construction

[0076] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0077]The preparation method of the solar battery sheet comprises the following steps:

[0078] a. Inspect the purchased silicon wafers and remove unqualified silicon wafers; b. Put the inspected silicon wafers into an alkaline solution for texturing, and the alkaline solution is sodium hydroxide; c. Silicon wafer is put into quartz boat, and quartz boat is put into common diffusion equipment to carry out diffusion, and in the present embodiment, diffusion equipment adopts the existing product that can buy on the market; d, the silicon wafer that diffuses is put into Carry out etching in common etching machine, provide ozone for etching machine by ozone generator, in the present embodiment, etching machine adopts the exist...

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Abstract

The invention provides a preparation method of a solar cell. By the preparation method, the technical problems of manual operation required, slow production speed and the like in the existing preparation method are solved. The preparation method of the solar cell comprises the following steps of (a) inspecting outsourced silicon wafers; (b) placing the inspected silicon wafers in an alkali solution for texturing; (c) placing the textured silicon wafers in a quartz boat, and placing the quartz boat in an ordinary diffusion device for diffusion; (d) placing the diffused silicon wafers in an ordinary etching machine for etching, and providing ozone for the etching machine by an ozone generation device; (e) carrying out dephosphorization cleaning on the surfaces of the etched silicon wafers; (f) printing positive electrodes and negative electrodes on the upper surfaces and the lower surfaces of the silicon wafers by an inclined scrapper in a mode of silk-screen printing on the washed silicon wafers; and (g) transmitting the printed silicon wafers to an ordinary sintering device for sintering by a sintering belt to obtain the solar cell. The preparation method has the advantages of high production efficiency.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and relates to a method for preparing solar cells. Background technique [0002] A solar cell is a device that responds to light and converts light energy into electricity. A solar cell is a semiconductor device with energy conversion function based on semiconductor materials, and is the core device of solar photovoltaic power generation. It can be divided into: monocrystalline silicon battery, polycrystalline silicon battery and amorphous silicon battery. [0003] After searching, for example, Chinese patent literature discloses a preparation method of a new battery sheet [application number: 201410299409.8; publication number: CN104103714A]. The preparation method of this new type of battery sheet includes cleaning texture step, diffusion junction step, etching and removing PSG step, coating step, screen printing step, sintering step and sorting step, characterized in that: the coating st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/18
CPCH01L31/1804Y02E10/547Y02P70/50
Inventor 范启超徐兆远
Owner ZHEJIANG LATTICEPOWER CO LTD
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