Work Function Adjustment by Using Dipole Engineering for TaN-Al₂O₃-Si₃N₄-HfSiOx-Silicon Nonvolatile Memory.
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ABSTRACT: This paper presents a novel TaN-Al₂O₃-HfSiOx-SiO₂-silicon (TAHOS) nonvolatile memory (NVM) design with dipole engineering at the HfSiOx/SiO₂ interface. The threshold voltage shift achieved by using dipole engineering could enable work function adjustment for NVM devices. The dipole layer at the tunnel oxide-charge storage layer interface increases the programming speed and provides satisfactory retention. This NVM device has a high program/erase (P/E) speed; a 2-V memory window can be achieved by applying 16 V for 10 μs. Regarding high-temperature retention characteristics, 62% of the initial memory window was maintained after 10³ P/E-cycle stress in a 10-year simulation. This paper discusses the performance improvement enabled by using dipole layer engineering in the TAHOS NVM.
SUBMITTER: Lin YH
PROVIDER: S-EPMC5455487 | biostudies-other | 2015 Aug
REPOSITORIES: biostudies-other
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