Bifacial photovoltaic cell
AssigneeSolaround Ltd.
InventorsNaftali Paul Eisenberg, Lev Kreinin
Life of this patent
Estimating the term…
Abstract
The invention provides a bifacial photovoltaic cell comprising: a semiconductor substrate, the substrate comprising an n+ layer on a first surface, and a p+ layer on a second surface. The n+ layer comprises an n-dopant and the p+ layer comprises a p-dopant. The cell further comprises a passivating and/or antireflective coating on the doped first and second surfaces. The cell is characterized in that the second surface of the semiconductor substrate has an area substantially devoid of the p-dopant on an edge of the second surface having a width in the range of 0.1-0.5 mm; wherein the area is formed by etching the semiconductor substrate.
Claims14
A bifacial photovoltaic cell comprising:
- a semiconductor substrate, said substrate comprising an n+ layer on a first surface thereof and a p+ layer on a second surface thereof, said n+ layer comprising an n-dopant and said p+ layer comprising a p-dopant;
- a passivating and/or antireflective coating on said doped first and said doped second surface;
- characterized in that said second surface of said semiconductor substrate has an area devoid of said p-dopant on an edge of said second surface having a width in the range of 0.1-0.5 mm, wherein said area is formed by etching the semiconductor substrate, and a ratio of back side short circuit current to front side short circuit current is at least 0.8.
Dependencies are inferred from the claim text.