Patent ID: 8157915
Filing Date: 2012-04-17
Classification: C23C

Abstract:
1. An apparatus for depositing one or more layers on a substrate ( 4 ), having a process chamber ( 2 ) disposed in a reactor housing ( 1 ), the process chamber ( 2 ) having a heatable floor ( 3 ) on which the substrate rests, a ceiling ( 5 ) parallel to the floor ( 3 ), and a gas-inlet means ( 6 ) for introducing process gases, it being possible for a distance (H) between the process-chamber ceiling ( 5 ) and the process-chamber floor ( 3 ) to be reduced to zero from a process position, in which layers are deposited on the substrate, to a cleaning position, in which the process chamber is cleaned, the apparatus characterized by a cooling assembly ( 7 ) disposed above the process-chamber ceiling ( 5 ) and by means of which the process-chamber ceiling ( 5 ), in the process position, is cooled as the layers are deposited, and further characterized by a distance between the cooling assembly ( 7 ) and the process-chamber ceiling ( 5 ) increasing as the distance (H) between the process-chamber ceiling ( 5 ) and the process-chamber floor ( 3 ) decreases.