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:
Jan. 07, 2014
Filed:
Aug. 27, 2009
Monali B. Joshi, San Franciso, CA (US);
Mark S. Goorsky, Valencia, CA (US);
Monali B. Joshi, San Franciso, CA (US);
Mark S. Goorsky, Valencia, CA (US);
The Regents of the University of California, Oakland, CA (US);
Abstract
Described herein are composite semiconductor substrates for use in semiconductor device fabrication and related devices and methods. In one embodiment, a composite substrate includes: (1) a bulk silicon layer; (2) a porous silicon layer adjacent to the bulk silicon layer, wherein the porous silicon layer has a Young's modulus value that is no greater than 110.5 GPa; (3) an epitaxial template layer, wherein the epitaxial template layer has a root-mean-square surface roughness value in the range of 0.2 nm to 1 nm; and (4) a set of silicon nitride layers disposed between the porous silicon layer and the epitaxial template layer.