Patent ID: 7772129
Filing Date: 2010-08-10
Classification: C23C,H01L

Abstract:
1. A method for manufacturing a semiconductor device, comprising: exposing a silicon layer to a first atmosphere to form a first nitride layer on a surface of the silicon layer, the first atmosphere containing a first nitriding gas nitriding the surface of the silicon layer and a first diluent gas not actually reacting with the silicon layer during production, the ratio of the sum of the partial pressure of the first diluent gas and the partial pressure of the first nitriding gas to the partial pressure of the first nitriding gas being 5 or higher, and the total pressure of the first atmosphere being 3 Torr or higher but 40 Torr or lower; and after forming of the first nitride layer on the surface of the silicon layer, exposing the silicon layer having the first nitride layer formed on the surface thereof to a second atmosphere containing a radical second nitriding gas to form a second nitride layer between the silicon layer and the first nitride layer.