WS2 Film by Sputtering and Sulfur-Vapor Annealing, and its pMISFET With TiN/HfO2 Top-Gate Stack, TiN Bottom Contact, and Ultra-Thin Body and Box

Autor: Takuya Hamada, Masaya Hamada, Satoshi Igarashi, Taiga Horiguchi, Iriya Muneta, Kuniyuki Kakushima, Kazuo Tsutsui, Tetsuya Tatsumi, Shigetaka Tomiya, Hitoshi Wakabayashi
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: IEEE Journal of the Electron Devices Society, Vol 9, Pp 1117-1124 (2021)
Druh dokumentu: article
ISSN: 2168-6734
DOI: 10.1109/JEDS.2021.3108882
Popis: A layered polycrystalline WS2 film is formed by radio-frequency (RF) magnetron sputtering and sulfur-vapor annealing (SVA). Its $p$ MISFET is successfully demonstrated with TiN/HfO2 top-gate stack, TiN contact, and ultra-thin body and box technologies. A WS2 film with a (002) plane is formed parallel to a substrate surface using RF magnetron sputtering, and its crystallinity is drastically enhanced by the SVA. $I$ – $V$ characteristics with $p$ -type operation are confirmed in WS2 MISFETs with a maximum field effect mobility of $1.5\times10$ −2 cm2V−1s−1. Therefore, our film-formation method is a promising candidate for $p$ MOSFETs in CMOS circuits.
Databáze: Directory of Open Access Journals