Systematic Investigation of Amorphous Transition-Metal-Silicon-Nitride Electrodes for Metal Gate CMOS Applications
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abstract
Select amorphous metals (transition-metal-silicon-nitride: TaSiN, MoSiN, HfSiN, TiSiN), were systematically evaluated for their electrical (effective work function) and physical (XRD, HRTEM, HAADF-STEM, EELS) properties. Effective work function values spanning 4.16 to 4.8 eV were observed for these materials after a 1000C anneal and on both SiO2 and Hf based high-k dielectrics, making them attractive candidates for future generation CMOS metal gates.
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Digest of Technical Papers. 2005 Symposium on VLSI Technology, 2005.