Patent ID: 7217627
Filing Date: 2007-05-15
Classification: H01L

Abstract:
1. A method for fabricating a semiconductor device comprising: providing a semiconductor substrate; forming a gate over the substrate such that a channel is formed in the substrate having a source side and a drain side, wherein at least a portion of the channel is defined by the gate; forming diffusion barrier ion regions by injecting diffusion barrier ions into the source side and the drain side of the channel, wherein the diffusion barrier ion regions are in contact with the channel; forming halo regions by injecting halo impurity ions of a first conductivity into the portions corresponding to the diffusion barrier ion regions after forming diffusion barrier ion regions; forming a source by injecting impurity ions of a second conductivity into the substrate adjacent to the source side of the channel; and forming a drain by injecting impurity ions of the second conductivity into the substrate adjacent to the drain side of the channel.