Improved electrical characteristics high-k gated MOS devices with in-situ remote plasma treatment in atomic layer deposition
We study the high-k dielectrics with in situ NH3, N2, H2 plasma treatment. EOT and Jg are reduced for the MOS device with NH3 plasma treated HfO2. A tetragonal phase HfO2 is obtained for the MOS device with NH3 plasma treatment. Stress induced Vfb shift and leakage are reduced for NH3 plasma treated HfO2. In-situ NH3 plasma treatment in ALD is a promising technique for high-k process.
high-k mos devices in-situ remote plasma ald hfon