A kind of preparation method of high-efficiency solar cell
A solar cell and high-efficiency technology, applied in the field of solar cells, can solve the problems of high manufacturing cost and low solar light efficiency, and achieve the effects of high production efficiency, high process yield and low contact resistance.
Active Publication Date: 2015-10-07
山东田河新能源科技有限公司
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[0005] The purpose of the embodiments of the present invention is to provide a method for preparing a high-efficiency solar cell, which aims to solve the problems of low sunlight efficiency and high manufacturing cost in the production of existing solar cells
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[0056] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0057] The application principle of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0058] like figure 1 As shown, the preparation method of the high-efficiency solar cell of the embodiment of the present invention comprises the following steps:
[0059] S101: Clean the texture, first pick the material, then keep the film box clean, pad the bottom of the film box with sponge to insert the film, put the film box with the inserted silicon wafer neatly and orderly into the plastic-coated stainless steel flower basket, the film box There are corre...
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The invention discloses a preparation method of an efficient solar cell. The preparation method of the efficient solar cell comprises the following steps of carrying out cleaning and texturing; carrying out phosphorus oxychloride liquid source diffusion; carrying out dry etching; removing PSG, and preparing cleaning fluid; carrying out antireflection film preparation and PECVD; carrying out silk-screen printing, wherein the working procedures of back electrode printing, processing through a first drying oven, back electric field printing, processing through a second drying oven, positive electrode printing, sintering and test sorting are carried out; carrying out assembly, wherein the working procedures of cell sorting, single-cell welding, series welding, stacking, lamination, framing, cleaning, electrical performance testing, packaging and storage are carried out. Due to the fact that a POCl3 liquid source diffusion method is adopted, the preparation method of the efficient solar cell has the advantages that production efficiency is high, and obtained PN junctions are even and flat and have good diffusion layer surfaces. The preparation method of the efficient solar cell is high in technological yield, small in number of generated defects, low in frequency of dislocation and low in contact resistance of formed ohmic contact, has excellent electrical conductivity, and is appropriate in purity and good in chemical stability.
Description
technical field [0001] The invention belongs to the technical field of solar cells, in particular to a preparation method of high-efficiency solar cells. Background technique [0002] The efficiency of crystalline silicon solar cells mainly depends on three aspects - light absorption, photoelectric quantum efficiency and photoelectron collection efficiency. Among them, the photoelectric quantum efficiency describes the ratio of photons absorbed by the solar cell into electrons. To improve the efficiency of crystalline silicon solar cells, it is necessary to increase the light absorption, photoelectric conversion efficiency and collection efficiency at the same time. Texture preparation is an effective means to reduce the reflectivity of light and increase the amount of light absorbed. Eliminating the recombination center of the PN junction can effectively improve the photoelectric quantum efficiency. Collection efficiency has a significant impact. [0003] Polysilicon is ...
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IPC IPC(8): H01L31/18
CPCH01L21/2225H01L21/228H01L31/1804Y02E10/547Y02P70/50
Inventor 王淮庆
Owner 山东田河新能源科技有限公司