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Superstrate sub-cell voltage-matched multijunction solar cells

United States Patent

March 15, 2016
View the Complete Patent at the US Patent & Trademark Office
National Renewable Energy Laboratory - Visit the NREL Technology Transfer Website
Voltage-matched multijunction solar cell architectures for integrating PV technologies
Voltage-matched thin film multijunction solar cell and methods of producing cells having upper CdTe pn junction layers formed on a transparent substrate which in the completed device is operatively positioned in a superstate configuration. The solar cell also includes a lower pn junction formed independently of the CdTe pn junction and an insulating layer between CdTe and lower pn junctions. The voltage-matched thin film multijunction solar cells further include a parallel connection between the CdTe pn junction and lower pn junctions to form a two-terminal photonic device. Methods of fabricating devices from independently produced upper CdTe junction layers and lower junction layers are also disclosed.
Mascarenhas; Angelo (Lakewood, CO), Alberi; Kirstin (Denver, CO)
Alliance for Sustainable Energy, LLC (Golden, CO)
14/ 243,320
April 2, 2014
CONTRACTUAL ORIGIN The United States Government has rights in this invention under Contract No. DE-AC36-08GO28308 between the United States Department of Energy and Alliance for Sustainable Energy, LLC, the manager and operator of the National Renewable Energy Laboratory.