K.-L. Lee, M.M. Frank, et al.
VLSI Technology 2006
We demonstrate the potential for ultrathin aluminum-oxide films as alternate gate dielectrics for Si complementary metal-oxide-semiconductor technology. Films are deposited in ultrahigh vacuum utilizing atomic beams of aluminum and oxygen on Si(100) surfaces. We show device-quality Si(100)/Al2O3 interfaces with interfacial trap densities in the 1010cm-2eV-1 range, and with leakage current densities five orders of magnitude lower than what is observed in SiO2 insulators at the same equivalent electrical thickness. As-grown films possess an amorphous-to-microcrystalline structure, depending upon the deposition temperature, and any interfacial layers between the Si(100) and Al2O3 layer are <∼0.5 nm. © 2001 American Institute of Physics.
K.-L. Lee, M.M. Frank, et al.
VLSI Technology 2006
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IEEE Electron Device Letters
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VLSI Technology 2004
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Semiconductor Science and Technology