Patent ID: 7638842

Claim:
A semiconductor device structure comprising: a substrate comprising a base insulator layer disposed over a base semiconductor layer comprising a first crystalline semiconductor material; a patterned insulator layer disposed over the substrate, the patterned insulator layer defining a first opening and a second opening exposing portions of the base insulator layer; a first active-area region formed in the first opening, the first active-area region comprising a first active-area material having a threading dislocation density less than approximately 10 5 cm −2 and disposed over and in contact with the base insulator layer; a second active-area region formed in the second opening, the second active-area region comprising a second active-area material having a threading dislocation density less than approximately 10 5 cm −2 and disposed over and in contact with the base insulator layer; a p-type metal-oxide-semiconductor (PMOS) transistor disposed over and including at least a portion of the first active-area region, the PMOS transistor including: a first gate dielectric region disposed over the first active-area region, a first gate disposed over the first gate dielectric region, the first gate comprising a first conducting layer, a first source and a first drain regions formed in the first active-area region proximate the first gate dielectric region, the first source and first drain region including p-type dopants; and an n-type metal-oxide-semiconductor (NMOS) transistor disposed over and including at least a portion of the second active-area region, the NMOS transistor including: a second gate dielectric region disposed over the second active-area region, a second gate disposed over the second gate dielectric region, the second gate comprising a second conducting layer, a second source and a second drain regions formed in the second active-area region proximate the second gate dielectric region, the second source and second drain including n-type dopants, wherein both the first active-area material and the second active-area material are different from the first crystalline semiconductor material, and the first active-area material is different from the second active-area material.