In this paper, we have investigated the threshold voltage (VTH) control of metal-oxide-nitride-oxide-Si (MONOS) nonvolatile memory (NVM) with high-k HfN/HfO2 stacked layers for analog memory application. The Si surface atomically flattening was found to significantly improve the VTH controllability of the MONOS NVM with high-k HfN/HfO2 stacked layers. The multi-level-cell (MLC) operation by controlling the program voltage at the source and drain was demonstrated utilizing MONOS NVM with high-k HfN/HfO2 stacked layers.
Atomic layer deposited TiO2- and Al2O3-based high-k gate insulator (GI) were examined for the Ge-based metal-oxide-semiconductor capacitor application. The single-layer TiO2 film showed a too high leakage current to be...