Patent ID: 6251801
Filing Date: 2001-06-26
Classification: C23C,C30B,H01L

Abstract:
A method of manufacturing a semiconductor device, comprising the step of:supplying an oxidizing gas and a nitriding gas onto one main surface of a semiconductor substrate while heating the substrate so as to oxynitride the surface region of the substrate;wherein said supplying step is performed such that the gaseous phase above the main surface of the substrate forms a first region having a substantially uniform temperature in a direction perpendicular to the main surface of the substrate and a second region interposed between the first region and the substrate and having a temperature gradient in a direction perpendicular to the main surface of the substrate such that the temperature is elevated toward the substrate;and the distance from the main surface of the substrate to the interface between the first and second regions is set at 9.5 cm or less.