Patent ID: 7626246
Filing Date: 2009-12-01
Classification: H01L

Abstract:
1. A structure comprising: a first shallow trench isolation region having a first width and defining a first opening in a substrate, the first opening having at least a first pair of sidewalls defined by the first shallow trench isolation region; a first active area comprising a first active area material disposed within and filling the first opening, the first active area being surrounded by and in contact with the first shallow trench isolation region; a second shallow trench isolation region having a second width and defining a second opening in the substrate, the second opening having at least a second pair of sidewalls defined by the second shallow trench isolation region; and a second active area comprising a second active area material disposed within and filling the second opening, the second active area being surrounded by and in contact with the second shallow trench isolation region, wherein a ratio of the first width to the second width is greater than 1 and the first active area material is a semiconductor selected from the group consisting of Ge, SiGe, SiC, diamond, III-V semiconductors, and II-VI semiconductors.