Patent ID: 8222516
Filing Date: 2012-07-17
Classification: H01L,Y02E,Y02P

Abstract:
1. A solar cell having a front side facing the sun to collect solar radiation during normal operation and a backside opposite the front side, the solar cell comprising: an N-type silicon substrate; a textured surface on the N-type silicon substrate on the front side of the solar cell; an antireflective layer over the textured surface of the N-type silicon substrate; a P-type polysilicon emitter formed over the N-type silicon substrate and forming a backside junction with the N-type silicon substrate; an oxide layer formed between the P-type polysilicon emitter and the N-type silicon substrate; a negative polarity metal contact making an electrical connection to the N-type silicon substrate from the front side of the solar cell; and a positive polarity metal contact making an electrical connection to the P-type polysilicon emitter from the backside of the solar cell.