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:
Sep. 10, 2013
Filed:
Jun. 01, 2011
Applicant:
Kai Shum, Orefield, PA (US);
Inventor:
Kai Shum, Orefield, PA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09B 67/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Perovskite semiconductor thin films and the method of making Perovskite semiconductor thin films are disclosed. Perovskite semiconductor thin films were deposited on inexpensive substrates such as glass and ceramics. CsSnIfilms contained polycrystalline domains with typical size of 300 nm and larger. It is confirmed experimentally that CsSnIcompound in its black phase is a direct band-gap semiconductor, consistent with the calculated band structure from the first principles.