Patent ID: 8377738
Filing Date: 2013-02-19
Classification: H01L,Y02E,Y02P

Abstract:
1. A method of fabricating a solar cell, the method comprising: forming a layer of polysilicon over a backside of a solar cell substrate, the solar cell substrate having a front side facing the sun to receive solar radiation during normal operation, the backside opposite the front side; printing a first dopant source over the layer of polysilicon, the first dopant source comprising printable inks; curing the first dopant source to diffuse dopants from the first dopant source to the layer of polysilicon to form a first diffusion region in the layer of polysilicon; preventing counterdoping of dopants from the first dopant source to a second dopant source during the curing of the first dopant source, wherein preventing counterdoping of dopants from the first dopant source to the second dopant source comprises purging dopants from the first dopant source out of a chamber during the curing of the first dopant source; and texturing a surface formed over the front side of the solar cell substrate.