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Ultra- High Solar Conversion Efficiency for Solar Fuels and Solar Electricity via Multiple Exciton Generation in Quantum Dots Coupled with Solar Concentration

United States Patent Application

20110214726
A1
View the Complete Application at the US Patent & Trademark Office
National Renewable Energy Laboratory - Visit the NREL Technology Transfer Website
Photoconversion devices comprising a semiconductor region of nanostructured crystalline material are disclosed. The nanostructures of a crystalline material provide for the generation of multiple excitons per photon absorbed by the crystalline nanostructure in response to incident solar radiation. The photoconversion devices will also include one or more optical elements providing for the concentration of sunlight in the semiconductor region. Also disclosed are photoconversion methods, systems and apparatus featuring the combination solar concentration with nanostructures of a crystalline material providing for the generation of multiple excitons per photon absorbed by the crystalline nanostructure in response to incident solar radiation.
NOZIK, Arthur J. (Boulder, CO), HANNA, Mark (Boulder, CO)
ALLIANCE FOR SUSTAINABLE ENERGY, LLC (Golden CO)
13/ 039,168
March 2, 2011
CONTRACTUAL ORIGIN [0002] The United States Government has rights in this invention under Contract No. DE-AC36-08G028308 between the United States Department of Energy and the Alliance for Sustainable Energy, LLC, the manager and operator of the National Renewable Energy Laboratory.