Ab-initio simulations of higher Miller index Si:SiO2 interfaces for fin field effect transistor and nanowire transistors
2016
Models of three representative higher Miller index interfaces, Si(310):SiO2, Si(410):SiO2, and Si(331):SiO2, have been built by an ab-initio molecular dynamics method. We show that each interface can be made as a fully bonded network without any defects and has a reasonable electronic structure for use in fin field effect transistors or gate-all-around nanowire devices. The differences in numbers of oxygen bridges are attributed to the intermediate sub-oxide components and the atomic step structure. The interface bonding schemes to passivate different densities of dangling bonds on different facets are also analyzed.
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