Hall-Effect Mobility Enhancement of Sputtered MoS2 Film by Vapor Phase Sulfurization through Al2O3 Passivation Film

Autor: Takuya Hoshii, Kentaro Matsuura, Hitoshi Wakabayashi, Takumi Ohashi, Haruki Tanigawa, Masaya Hamada, Kazuo Tsutsui, Kuniyuki Kakushima, Iriya Muneta, Takuro Sakamoto
Rok vydání: 2018
Předmět:
Zdroj: 2018 IEEE SOI-3D-Subthreshold Microelectronics Technology Unified Conference (S3S).
Popis: Layered MoS 2 film was formed on a SiO 2 substrate by sputtering and Al 2 O 3 film was deposited as passivation film on the MoS 2 film, an annealing was performed in sulfur atmosphere in order to compensate sulfur defects and improve crystallinity. By annealing MoS 2 film in sulfur atmosphere, crystallinity was improved by sulfur compensation even through Al 2 O 3 film, and Hall-effect mobility of the MoS 2 film increased than that prior to annealing. The high Hall-effect mobility values of 300 and 100 cm2 V-1s-1 were remarkably achieved without and with 3-nm passivation film, respectively.
Databáze: OpenAIRE