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:
May. 31, 1983
Filed:
Oct. 14, 1980
Applicant:
Inventors:
Assignee:
Yeda Research and Development Company, Rehovot, IL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ; H01L / ;
U.S. Cl.
CPC ...
429111 ; 2041292 ; 2041293 ; 204D / ; 204 2995 ; 2042 / ; 427 74 ; 427 76 ; 136260 ; 136264 ; 357 30 ;
Abstract
A process for preparing the surface of a metal chalcogenide. The metal chalcogenide is immersed in a suitable electrolyte. The electrolyte is selected such that the metal chalcogenide is relatively stable therein in the dark, but unstable as a photoelectrode under illumination. The metal chalcogenide is connected to another electrode; and the electrode is immersed in the electrolyte. The metal chalcogenide is illuminated to photoetch the chalcogenide thereby improving the surface electronic properties of the semiconductor. A process for the surface treatment of metal chalcogenides including immersing the metal chalcogenide in an aqueous solution containing Zn and/or Cr ions.