Patent ID: 9412885
Filing Date: 2016-08-09
CPC Classification: H01L,Y02E

Claim Text:
1. A solar cell comprising: a substrate of a first conductive type; an emitter region of a second conductive type opposite the first conductive type and which forms a p-n junction along with the substrate; an anti-reflection layer positioned on the emitter region; a front electrode part electrically connected to the emitter region; and a back electrode part electrically connected to the substrate, wherein the substrate includes a first area formed of single crystal silicon and a second area formed of polycrystalline silicon, wherein a roughness of an incident surface of the substrate in the first area is different from a roughness of the incident surface of the substrate in the second area, wherein the emitter region is entirely and directly formed on the incident surface of the substrate, wherein the emitter region includes a first area farmed of single crystal silicon and a second area formed of polycrystalline silicon, and wherein a thickness of the anti-reflection layer positioned on the first area of the emitter region is less than a thickness of the anti-reflection layer positioned on the second area of the emitter region.