講演抄録/キーワード |
講演名 |
2019-01-29 11:00
[招待講演]The Relationship between Polarization Switching and Subthreshold Behavior in HfO2-based Ferroelectric and Anti-ferroelectric FET: An Experimental Study ○Chengji Jin・Kyungmin Jang・Takuya Saraya・Toshiro Hiramoto・Masaharu Kobayashi(Univ. of Tokyo) SDM2018-84 エレソ技報アーカイブへのリンク:SDM2018-84 |
抄録 |
(和) |
We have experimentally studied and revealed the direct relationship between polarization switching and subthreshold characteristics of HfO2-based ferroelectric FET (FeFET) and Anti-FeFET (A-FeFET) by systematically designing and fabricating devices, and monitoring Ig with high resolution. In the circumstances that charge injection prevents polarization switching from occurring in subthreshold region of FeFET, we have obtained two major findings: (1) Sub-60 subthreshold slope (SS) can be realized by adjusting Vg bias sequence, which is attributed to charge injection assisted by polarization switching. (2) Anti-ferroelectric facilitates to align polarization switching in subthreshold region and SS can be improved in A-FeFET, which is directly observed by monitoring Ig. |
(英) |
We have experimentally studied and revealed the direct relationship between polarization switching and subthreshold characteristics of HfO2-based ferroelectric FET (FeFET) and Anti-FeFET (A-FeFET) by systematically designing and fabricating devices, and monitoring Ig with high resolution. In the circumstances that charge injection prevents polarization switching from occurring in subthreshold region of FeFET, we have obtained two major findings: (1) Sub-60 subthreshold slope (SS) can be realized by adjusting Vg bias sequence, which is attributed to charge injection assisted by polarization switching. (2) Anti-ferroelectric facilitates to align polarization switching in subthreshold region and SS can be improved in A-FeFET, which is directly observed by monitoring Ig. |
キーワード |
(和) |
Steep SS / ferroelectric HfO2 / polarization switching / / / / / |
(英) |
Steep SS / ferroelectric HfO2 / polarization switching / / / / / |
文献情報 |
信学技報, vol. 118, no. 429, SDM2018-84, pp. 13-16, 2019年1月. |
資料番号 |
SDM2018-84 |
発行日 |
2019-01-22 (SDM) |
ISSN |
Print edition: ISSN 0913-5685 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 |
SDM2018-84 エレソ技報アーカイブへのリンク:SDM2018-84 |