Effectiveness of c-Axis Aligned Crystalline IGZO FET as Selector Element and Ferroelectric Capacitor Scaling of 1T1C FeRAM

Autor: Naomi Yazaki, Ryosuke Motoyoshi, Shiyu Numata, Kazuaki Ohshima, Yuji Egi, Fumito Isaka, Toshikazu Ohno, Sachiaki Tezuka, Toshiki Hamada, Kazuma Furutani, Kazuki Tsuda, Takanori Matsuzaki, Tatsuya Onuki, Tsutomu Murakawa, Hitoshi Kunitake, Masaharu Kobayashi, Shunpei Yamazaki
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: IEEE Journal of the Electron Devices Society, Vol 11, Pp 467-472 (2023)
Druh dokumentu: article
ISSN: 2168-6734
DOI: 10.1109/JEDS.2023.3307124
Popis: Aiming to reduce the area of a ferroelectric random access memory (FeRAM), we fabricated an FeRAM having a 1T1C configuration by using a ${c}$ -axis aligned crystalline In-Ga-Zn-O field-effect transistor, which we call OSFET, with a high breakdown voltage. A combination of the OSFET with ${L}/{W}$ of 60 nm/60 nm and a single damascene ferroelectric capacitor (FE-Cap) attained FE-Cap area reduction to $0.06~\mu \text{m}~^{\mathrm{ 2}}$ per cell. The FeRAM achieved a write time of 10 ns, a rewriting endurance of 109 cycles, and a data retention time of 100 min at 85°C. The OSFET is an optimal selector element for emerging memories.
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