Patent ID: 9437755
Filing Date: 2016-09-06
CPC Classification: H01L,Y02E,Y02P

Claim Text:
1. A solar cell comprising: a first layer of doped polysilicon formed over a back surface of a substrate, the first layer of doped polysilicon forming a backside junction with the substrate; a second layer of doped polysilicon formed over a front surface of the substrate, the second layer of doped polysilicon making an electrical connection to the substrate; a first dielectric layer between the first layer of doped polysilicon and the back surface of the substrate; a second dielectric layer between the second layer of doped polysilicon and the front surface of the substrate; a first metal contact making an electrical connection to the first layer of doped polysilicon on a backside of the solar cell; a second metal contact making an electrical connection to the second layer of doped polysilicon on a front side of the solar cell, the first metal contact and the second metal contact being configured to allow an external electrical circuit to be powered by the solar cell; and a third dielectric layer formed over the first layer of doped polysilicon.