A kind of IBC batteries and preparation method thereof

A kind of IBC batteries and preparation method thereof

  • CN 107,611,197 A
  • Filed: 09/05/2017
  • Published: 01/19/2018
  • Est. Priority Date: 09/05/2017
  • Status: Active Application
First Claim
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1. a kind of IBC batteries, it includes N-type crystalline silicon substrate, passivation layer, positive and negative electrode, and the surface of silicon random distribution is fallenRectangular pyramid group, the group of falling rectangular pyramid of the silicon substrate includes two or more rectangular pyramids being at least partly overlapped mutually, in siliconThe back side local doping of substrate, forms P-N junction, local, which adulterates, at the silicon substrate back side to form N+ and P+ layers, in battery front side successivelySilicon oxide layer, silicon nitride layer are formed, silicon oxide layer, backside passivation layer windowing, at the N-type crystalline silicon substrate back side are formed in cell backsideN+ and P+ regions difference type metal positive and negative electrode, electrode and doped layer form Ohmic contact, and sintering obtains IBC batteries.

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