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:
Nov. 13, 2012
Filed:
Jul. 27, 2009
David Mosley, Philadelphia, PA (US);
Kevin Calzia, Philadelphia, PA (US);
Charles Szmanda, Westborough, MA (US);
David Mosley, Philadelphia, PA (US);
Kevin Calzia, Philadelphia, PA (US);
Charles Szmanda, Westborough, MA (US);
Rohm and Haas Electronic Materials LLC, Marlborough, MA (US);
Abstract
A selenium ink comprising a chemical compound having a formula RZ—Se—Z'R′ stably dispersed in a liquid carrier is provided, wherein the selenium ink is hydrazine free and hydrazinium free. Also provided are methods of preparing the selenium ink and of using the selenium ink to deposit selenium on a substrate for use in the manufacture of a variety of chalcogenide containing semiconductor materials, such as, thin film transistors (TFTs), light emitting diodes (LEDs); and photoresponsive devices (e.g., electrophotography (e.g., laser printers and copiers), rectifiers, photographic exposure meters and photovoltaic cells) and chalcogenide containing phase change memory materials.