N-type substrate silicon solar cell and production method thereof

A technology of solar cells and production methods, applied in the field of solar cells, can solve the problems of high defect recombination, restricting the development of P-type silicon, and low carrier lifetime, and achieve the effects of less recombination defects, improved conversion efficiency, and thin thickness

Inactive Publication Date: 2012-04-04
宁波市鑫友光伏有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The current production process of P-type substrate silicon solar cells is quite mature, but some significant shortcomings such as

Method used

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  • N-type substrate silicon solar cell and production method thereof
  • N-type substrate silicon solar cell and production method thereof
  • N-type substrate silicon solar cell and production method thereof

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Embodiment

[0023] Such as figure 1 As shown, the N-type substrate silicon solar cell provided by the present invention includes an N-type silicon substrate 1, which is characterized in that an N+ region layer 2 is provided on one side of the N-type silicon substrate 1, and an N+ region layer 2 is provided on the N+ region layer 2. There is an anti-reflective film layer 3, and a positive silver layer 4 is provided on the anti-reflective film layer 3. The positive silver layer 4 forms a front electrode to draw current; on the other side of the N-type silicon substrate 1, a P zone layer 5 is provided A back electrode layer 6 is provided on the P zone layer 5, and the back electrode layer 6 is a metal aluminum layer. The material of the N-type silicon substrate 1 in this embodiment is a silicon alloy. During production, the back electrode layer 6 of metal aluminum is printed on the back of the N-type silicon substrate 1, and sintering can fire the silicon aluminum into silicon aluminum alloy. ...

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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...

Claims

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Application Information

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IPC IPC(8): H01L31/0352H01L31/068H01L31/18
CPCY02E10/50Y02E10/547Y02P70/50
Inventor 张云国俞英芸庞井明张立波石义洋
Owner 宁波市鑫友光伏有限公司
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