Patent ID: 7705402
Filing Date: 2010-04-27
Classification: H01L

Abstract:
1. A semiconductor device comprising: a semiconductor substrate including a supporting substrate, an insulating layer formed over the supporting substrate and a first and a second silicon layer formed over the insulating film; an n channel conductivity type field effect transistor including a channel forming region formed in the first silicon layer, wherein the n channel conductivity type field effect transistor includes a source region and a drain region formed in the first silicon layer such that the channel forming region is formed between the source region and the drain region; a p channel conductivity type field effect transistor including a channel forming region formed in the second silicon layer, wherein the p channel conductivity type field effect transistor includes a source region and a drain region formed in the second silicon layer such that the channel forming region is formed between the source region and the drain region; and a first film including nitride, being formed over the n channel conductivity type field effect transistor and covering a gate electrode of the n channel conductivity type field effect transistor, wherein a gate length of the n channel conductivity type field effect transistor is less than 0.1 μm, wherein a gate length of the p channel conductivity type field effect transistor is less than 0.1 μm, wherein the first film generates a stress, in the direction of flow of a drain current, in the channel forming region of the n channel conductivity type field effect transistor, and wherein an interatomic distance of silicon in the direction of flow of a drain current in the channel forming region of the n channel conductivity type field effect transistor is greater than an interatomic distance of silicon in the direction of flow of a drain current in the channel forming region of the p channel conductivity type field effect transistor.