Patent ID: 8253013
Filing Date: 2012-08-28
Classification: H01L,Y02E,Y02P

Abstract:
1. A solar cell comprising: a semiconductor substrate of a first conductive type having at least one via hole; an emitter layer of a second conductive type opposite the first conductive type on the semiconductor substrate; a first conductor positioned on the emitter layer at an incident surface of the semiconductor substrate and connected to the emitter layer, a portion of the first conductor being positioned inside the via hole; a second conductor directly positioned on the emitter layer at a surface of the semiconductor substrate opposite the incident surface and connected to the first conductor through the via hole, a portion of the second conductor being positioned inside the via hole; and a third conductor positioned on the surface of the semiconductor substrate opposite the incident surface and connected to the semiconductor substrate, the third conductor being separated from the first and second conductors, wherein the second conductor and the third conductor are positioned on a same stratum, and wherein a material of the first conductor and a material of the second conductor are different.