A Novel 3D Gate-All-Around Vertical FeFET with Back-Gate Structure for Disturbance-Less Program Operation

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초록

We demonstrated 3D vertical Gate-All-Around (GAA) vertical-channel FeFET using ferroelectric (FE) Zr-doped HfO2 (HZO) and indium-gallium oxide (IGO) channel. Subthreshold swing of 90 mV/dec, large memory window (MW) of 2.5V, 2 bits/cell, and reliable 10-years retention are reported. Furthermore, new Gate-All-Around with Back-Gate (GAAB) structure and operation scheme are proposed to increase MW by improving the channel potential controllability and enhance resistance against disturb for Multi-Level Cell(MLC) operation.

키워드

Hafnium oxidesIndium compoundsZirconium compounds
제목
A Novel 3D Gate-All-Around Vertical FeFET with Back-Gate Structure for Disturbance-Less Program Operation
저자
Ku, BoncheolSim, Jae-MinHur, Jae SeokJeong, Jae KyeongSong, Yun-HeubChoi, Changhwan
DOI
10.1109/IMW59701.2024.10536939
발행일
2024-05
유형
Proceedings Paper
저널명
2024 IEEE INTERNATIONAL MEMORY WORKSHOP, IMW
페이지
1 ~ 4