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. 04, 2018
Filed:
Mar. 05, 2010
David B. Mitzi, Mahopac, NY (US);
Teodor K. Todorov, Yorktown Heights, NY (US);
David B. Mitzi, Mahopac, NY (US);
Teodor K. Todorov, Yorktown Heights, NY (US);
INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US);
Abstract
A method with enhanced safety characteristics of depositing a kesterite film, which includes a compound of the formula: CuZnSn(SSe), wherein 0≤x≤1; 0≤y≤1; 0≤z≤1; −1≤q≤1. The method includes contacting an aqueous solvent, ammonia, a source of hydrazine, a source of Cu, a source of Sn, a source of Zn, a source of at least one of S and Se, under conditions sufficient to form an aqueous dispersion which includes solid particles; applying the dispersion onto a substrate to form a thin layer of the dispersion on the substrate; and annealing at a temperature, pressure, and length of time sufficient to form the kesterite film. An annealing composition and a photovoltaic device including the kesterite film formed by the above method are also provided.