N-type substrate silicon solar cell and production method thereof

Abstract

The invention discloses an N-type substrate silicon solar cell and a production method of the N-type substrate silicon solar cell. The N-type substrate silicon solar cell comprises an N-type silicon substrate and is characterized in that an N plus area layer is arranged at one side of the N-type silicon substrate; an antireflection film layer is arranged on the N plus area layer; a positive silver layer is arranged on the antireflection film layer; a P area layer is arranged at the other side of the N-type silicon substrate; and a back electrode layer is arranged on the P area layer and is a metal aluminum layer. The inventionhas the beneficial effects that compared with a P-type substrate silicon solar cell, the N-type substrate silicon solar cell has longer carrier service life, fewer complex defects, small temperature coefficient errors and thin thickness and also has the imponderable advantages in feed; through further improving the process of the N-type substrate silicon solar cell, the conversion efficiency of the solar cell can be more greatly improved, and the electrical property of the solar cell is improved to a large extent; and compared with the P-type substrate silicon solar cell, each N-type substrate silicon solar cell is improved by 0.15W on average, so that the profit on each production line can be greatly increased.

Description

Technical field [0001] The invention relates to a solar cell, especially an N-type substrate silicon solar cell and a production method thereof. Background technique [0002] Currently, most silicon solar cell manufacturers use P-type substrate silicon for the production of silicon solar cells. The current production process of P-type substrate silicon solar cells is quite mature, but some of its significant shortcomings, such as low minority carrier life and high defect complexes, severely restrict the development of P-type silicon. Summary of the invention [0003] The purpose of the present invention is to provide an N-type substrate silicon solar cell with long carrier lifetime and few composite defects in order to solve the above-mentioned shortcomings of the prior art. [0004] In order to achieve the above-mentioned purpose, the N-type substrate silicon solar cell designed by the present invention includes an N-type silicon substrate, which is characterized in that an N+ reg...

AI Technical Summary

Problems solved by technology

The current production process of P-type substrate silicon solar cells is quite mature, but some significant shortcomings such as low minority carrier lifetime, high defect recombination and other defects seriously restrict the development of P-type silicon.

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