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United States Patent Application

View the Complete Application at the US Patent & Trademark Office
National Renewable Energy Laboratory - Visit the NREL Technology Transfer Website
An apparatus for dry deposition of thin films of cadmium telluride and other material layers required for a photovoltaic device. The apparatus includes a vacuum deposition chamber. A preheat station and source container are provided in the chamber, and the source container and material therein are heated to a deposition temperature. An integral shutter is placed in the chamber, and the shutter includes a planar body with a carrier receiver extending out from one end shaped as a two-prong fork or a closed loop. The shutter is positioned with the receiver and a received carrier in the preheat station and the body covering the source container outlet. The preheat station heats the carrier and sample to avoid thermal shock during deposition. The shutter is then positioned with the body moved from the source container outlet and the carrier receiver positioned to expose a sample surface to the deposition material.
Gessert, Timothy A. (Conifer, CO), Barnes, Teresa M. (Energreen, CO)
Alliance for Sustainable Energy, LLC (Golden CO)
12/ 732,064
March 25, 2010
CONTRACTUAL ORIGIN [0002] 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.