Patent ID: 6090211
Filing Date: 2000-07-18
Classification: C23C,C30B

Abstract:
An apparatus for forming a semiconductor thin layer on a surface of a substrate, said apparatus comprising:a gas outlet for supplying a gas to the substrate,a holder which is rotatably mounted and which is for holding the substrate thereon such that a surface of the substrate is exposed to the gas while the substrate orbits with rotation of the holder about a rotational axis of the holder,a heater for generating and supplying heat energy to the substrate held on the holder so that the substrate is heated to form the semiconductor thin layer on said surface of the substrate, anda cover wall for extending over said surface of the substrate, wherein a distance between said surface of the substrate and the cover wall in a direction parallel to the rotational axis of the rotatable holder decreases in a direction radially outward from said rotational axis of the holder over the substrate orbiting with rotation of the holder.