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Light trapping in thin film solar cells using textured photonic crystal

United States Patent

January 27, 2009
View the Complete Patent at the US Patent & Trademark Office
National Renewable Energy Laboratory - Visit the NREL Technology Transfer Website
A solar cell includes a photoactive region that receives light. A photonic crystal is coupled to the photoactive region, wherein the photonic crystal comprises a distributed Bragg reflector (DBR) for trapping the light.
Yi; Yasha (Somerville, MA), Kimerling; Lionel C. (Concord, MA), Duan; Xiaoman (Amesbury, MA), Zeng; Lirong (Cambridge, MA)
Massachusetts Institute of Technology (Cambridge, MA)
11/ 194,717
August 1, 2005
This invention was made with government support under National Renewable Energy Laboratory Subcontract Number XAT-2-31605-07, awarded by the Department of Energy. The government has certain rights to the invention.