Metal fingers typically cover more than 10% of the active area of concentrator solar cells. Microfabricated dielectric optical designs that can completely eliminate front contact shading losses are explored. Essentially no microconcentrator optical losses need be incurred, series resistance losses can be reduced, and net efficiency gains of roughly 15% (relative) are realistic.
© 2007 Optical Society of America
Other Areas of Optics
Original Manuscript: February 23, 2007
Revised Manuscript: May 31, 2007
Manuscript Accepted: June 6, 2007
Published: September 20, 2007
Omer Korech, Jeffrey M. Gordon, Eugene A. Katz, Daniel Feuermann, and Naftali Eisenberg, "Dielectric microconcentrators for efficiency enhancement in concentrator solar cells," Opt. Lett. 32, 2789-2791 (2007)