Patent ID: 9196768
Filing Date: 2015-11-24
Classification: H01L,Y02E,Y02P

Abstract:
1. An apparatus for deposition of a plurality of elements and/or compounds onto a solar cell substrate comprising: a. a housing; b. a transporting apparatus to transport said substrate in and out of said housing; c. one or more tubing apparatus to deliver powders of said elements and/or compounds to said housing in a contiguous process wherein said tubing apparatus is comprised of one or more feeder tubes located outside of said housing and joined to said housing; a plurality of source material tubes located outside of said housing and joined to said feeder tubes; a plurality of valves located inside of said source material tubes sufficient to block access between said source material tubes and said feeder tubes; one or more heating tubes located inside of said housing and connected to said feeder tubes; d. a loading station for loading said substrate onto said transporting apparatus; e. one or more thermal sources to heat said housing and said heating tubes; wherein said heating tube is comprised of an upper portion and a lower portion wherein said lower portion faces said substrate and said upper portion is opposite to said lower portion wherein only said lower portion is permeable to said vapor and said carrier gas; wherein said heating tubes have a larger perimeter than said feeder tubes and encircles said feeder tubes; f. one or more sleeves wherein said sleeves have a larger perimeter than said heating tubes, encircle said heating tubes, and allow said vapor to escape from said sleeves towards the substrate.