In the method for solar cell surface read-write identification code

In the method for solar cell surface read-write identification code

  • CN 102,623,548 B
  • Filed: 10/26/2011
  • Issued: 01/06/2016
  • Est. Priority Date: 01/31/2011
  • Status: Active Grant
First Claim
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1. , in a method for solar cell surface read-write identification code, it is characterized in that, comprising:

  • There is provided the semi-finished product of one batch of solar cell substrate, described semi-finished product refer to that described solar cell substrate has completed some or all technique;

    AndWith laser, described solar cell substrate extinction face or back side burning one are identified to the identification code of wafer, do local with the surface microstructure of laser needle to described identification code region to burn, to change the optical property of described identification code region, wherein, described identification code is not suitable for using visible ray as debating knowledge light source, and it is that optical source wavelength is between 1100nm-1200nm or 300nm ~ 400nm that light source is known in best debating.

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