Description:This patent consists of ion molarity that is monitored in real-time when manufacturing a cadmium sulfide film for a solar cell. Monitoring the molarity of cadmium ions results in improved efficiency of the cadmium sulfide thin film. A reaction chamber with an anion-selective electrode monitors the cadmium ions in solution during formation of the solar cell layer. Patent issued.
Abstract:The present invention provides a reaction chamber to monitor a metal ion in solution during the formation of a metal-sulfide layer on a substrate. The reaction chamber houses a solution of an ammonium ion, a metal ion and a buffer. The reaction chamber includes an anion-selective electrode in the solution to monitor the metal ion that measures the metal ion during metal-ammonium complex formation, metal-thiourea complex formation, metal sulfide composition formation, metal sulfide layer formation or a combination thereof.
Issue Date: 08/27/2013
Application Date: 08/31/2011
Post Date: 03/02/2018
UTEP Docket No: 2010-014
