Patent ID: 9293611
Filing Date: 2016-03-22
CPC Classification: H01L,Y02E,Y02P

Claim Text:
1. A method for fabricating a solar cell structure with a microsphere-roughened antireflection structure, the solar cell structure with the microsphere-roughened antireflection structure comprising: a P-type monocrystalline substrate; a N-type semiconductor layer and a P-type semiconductor that are respectively arranged on an upper surface and a lower surface of the P-type monocrystalline substrate; a P-type metal contact electrode arranged below the P-type semiconductor layer; a N-type metal contact electrode having a specified pattern and connected with the N-type semiconductor layer; a microsphere-roughened antireflection layer arranged on an upper surface of the N-type semiconductor layer without covering the N-type metal contact electrode; and a surface passivation layer arranged on the upper surface of the N-type semiconductor layer, wherein the N-type metal contact electrode passes through the surface passivation layer to connect with the N-type semiconductor layer, wherein the surface passivation layer is fabricated on the upper surface of the N-type semiconductor layer beforehand; next, the N-type metal contact electrode having the specified pattern is fabricated on an upper surface of the surface passivation layer; next, a baking process is undertaken to make the N-type metal contact electrode pass through the surface passivation layer to connect with the N-type semiconductor layer; next, the microsphere-roughened antireflection layer is fabricated on the upper surface of the surface passivation layer, without covering the N-type metal contact electrode.