Patent ID: 7776727
Filing Date: 2010-08-17
Classification: H01L,Y02E,Y02P

Abstract:
1. A method of forming a solar cell device, comprising: depositing a dielectric layer on a substrate; patterning the dielectric layer to form a mask, thereby forming a pattern of exposed regions of the substrate; disposing a first amount of a first dopant within the exposed regions of the substrate; disposing a second amount of a second dopant within the exposed regions of the substrate, the dielectric layer, and the substrate below the dielectric layer after disposing the first dopant within the exposed regions, thereby forming a first doped region and a second doped region within the substrate, wherein the first dopant has a higher atomic mass than the second dopant; and heating the substrate so that the first dopant diffuses a first depth within the substrate and the second dopant diffuses a second depth within the substrate, wherein the second depth of the second doped region is deeper than the first depth of the first doped region.