The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 08, 2020
Filed:
Dec. 26, 2018
Government of the United States, As Represented BY the Secretary of the Air Force, Wright-Patterson AFB, OH (US);
Michael R. Snure, Dayton, OH (US);
David Weyburne, Maynard, MA (US);
United States of America as represented by the Secretary of the Air Force, Wright-Patterson AFB, OH (US);
Abstract
A low pressure process for producing thin film crystalline black phosphorus on a substrate and a black phosphorus thin film made by the process. The process includes flowing a phosphorus-containing gas into a deposition chamber and depositing phosphorus from the phosphorus-containing gas onto the substrate in the chamber. The substrate is selected from (i) a gold substrate, a gold-tin alloy substrate, a silver substrate and a copper substrate and (ii) a substrate comprising a thin film of metal selected from gold, tin, silver, copper and alloys of the foregoing metals. The substrate and phosphorus are heated to a temperature ranging from about 350° to less than about 500° C. to form a phosphorus intermediate composition. The substrate and intermediate composition are heated to a temperature of greater than 500° C. to less than about 1000° C. convert the metal phosphorus intermediate composition to the black phosphorus thin film.