Characterization of TiOxNy nanoparticles embedded in HfOxNy as charge trapping nodes for nonvolatile memory device applications
Silicon-oxidenitride-oxidesilicon devices with nanoparticles (NPs) as charge trapping nodes (CTNs) are important to provide enhanced performance for nonvolatile memory devices. To study these topics, the TiOxNy metal oxide NPs embedded in the HfOxNy high-k dielectric as CTNs of the nonvolatile memory devices were investigated via the thermal synthesis using Ti thin-film oxidized in the mixed O2/N2 ambient. Well-isolated TiOxNy NPs with a diameter of 520nm, a surface density of ?31011cm?2, and a charge trap density of around 2.331012cm?2 were demonstrated. The writing characteristic measurements illustrate that the memory effect is mainly due to the hole trapping.
tioxny nanoparticles hfoxny charge trapping nodes nonvolatile memory devices