Patent ID: 8062922
Filing Date: 2011-11-22
Classification: C23C,H01L,Y02E

Abstract:
1. A method of depositing a thin-film chalcogenide buffer layer onto a flexible substrate, comprising: transporting a web of thin-film substrate material through a deposition region in a longitudinal direction; dispensing onto the web, at a first longitudinal position within the deposition region, a first solution containing a metal selected from the group consisting of copper, silver, gold, zinc, cadmium, mercury, lead, boron, aluminum, gallium, indium, and thallium; dispensing onto the web, at a second longitudinal position within the deposition region, a second solution containing a chalcogen selected from the group consisting of oxygen, sulfur, selenium, and tellurium, and distributing the first solution across a transverse dimension of the web by passing the web under a solution spreader disposed substantially across the transverse dimension of the web.