講演抄録/キーワード |
講演名 |
2021-10-21 13:50
A study on Hf-based MONOS nonvolatile memory with HfO2 and HfON tunneling layers for multi-bit/cell operation ○Pyo Jooyoung・Ihara Akio・Ohmi Shun-ichiro(Tokyo Tech.) SDM2021-48 エレソ技報アーカイブへのリンク:SDM2021-48 |
抄録 |
(和) |
(まだ登録されていません) |
(英) |
We investigated the in-situ formed Hf-based MONOS non-volatile memory (NVM) device with HfO2 and HfON tunneling layer (TL) for the multi-bit/cell operation. In the case of HfO¬2 TL, the SiO2 interfacial layer (IL) was formed which increases EOT. In this research, we utilized the HfON as the TL which was formed by the Ar/O2 plasma oxidation of deposited HfNx to suppress the SiO2 IL formation. The HfON TL device shows MW of 3.9 V even at the low program/erase (P/E) voltage with fast operation compared to HfO2 TL. The HfON TL shows strong VTH dependence by VDS. Therefore, HfON TL realized larger margin to evaluate each programmed state. It was found that both devices show suppression of the lateral charge spread effect from the retention measurement. Although HfON TL shows high noise spectral density (SID) compared to HfO2 TL, nitrogen incorporation suppresses the degradation of interface characteristics after the P/E cycles of 104. |
キーワード |
(和) |
/ / / / / / / |
(英) |
In situ process / non-volatile memory / HfON / HfO2 / multi-bit/cell operation / noise spectral density / / |
文献情報 |
信学技報, vol. 121, no. 212, SDM2021-48, pp. 16-19, 2021年10月. |
資料番号 |
SDM2021-48 |
発行日 |
2021-10-14 (SDM) |
ISSN |
Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
PDFダウンロード |
SDM2021-48 エレソ技報アーカイブへのリンク:SDM2021-48 |