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Systems and methods for forming solar cells with CuInSe.sub.2 and Cu(In,Ga)Se.sub.2 films

United States Patent

9,583,667
February 28, 2017
View the Complete Patent at the US Patent & Trademark Office
National Renewable Energy Laboratory - Visit the NREL Technology Transfer Website
Systems and methods for forming solar cells with CuInSe.sub.2 and Cu(In,Ga)Se.sub.2 films are provided. In one embodiment, a method comprises: during a first stage (220), performing a mass transport through vapor transport of an indium chloride (InCl.sub.x) vapor (143, 223) and Se vapor (121, 225) to deposit a semiconductor film (212, 232, 252) upon a substrate (114, 210, 230, 250); heating the substrate (114, 210, 230, 250) and the semiconductor film to a desired temperature (112); during a second stage (240) following the first stage (220), performing a mass transport through vapor transport of a copper chloride (CuCl.sub.x) vapor (143, 243) and Se vapor (121, 245) to the semiconductor film (212, 232, 252); and during a third stage (260) following the second stage (240), performing a mass transport through vapor transport of an indium chloride (InCl.sub.x) vapor (143, 263) and Se vapor (121, 265) to the semiconductor film (212, 232, 252).
Albin; David S. (Golden, CO), Vora; Nirav (Toledo, OH), Jimenez; Sebastian Caparros (Sevilla, ES), Gutierrez; Joaquin Murillo (Sevilla, ES), Cortezon; Emilio Sanchez (Sevilla, ES), Romero; Manuel (Littleton, CO)
Alliance for Sustainable Energy, LLC (Golden, CO), Abengoa Solar New Technologies, S.A. (Sevilla, ES)
14/ 382,106
20150079724
February 27, 2013
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 the Alliance for Sustainable Energy, LLC, the Manager and Operator of the National Renewable Energy Laboratory.