Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/95544
標題: Electron Mobility Calculation for Monolayer Transition Metal Dichalcogenide Alloy Using Tight-Binding Band Structure
作者: Chen, Kuan-Ting
He, Ren-Yu
Lee, Chia-Feng
Wu, Ming-Ting
張書通
Chang, Shu-Tong
關鍵字: Monolayer TMD Alloy
Mo1−xWxS2
Tight-Binding Model
Modified Effective Mass Approximation
出版社: JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
摘要: Owing to the unique electronic properties of its atomically thin two-dimensional layered structure, a monolayer transition metal dichalcogenide (TMD) alloy can be formed into an energy-saving metal-oxide-semiconductor field-effect transistor. This work focuses on analytical physical models used for electron mobility calculations of atypical monolayer TMD alloy, such as Mo1−x W x S2. The tight-binding (TB) model is used to calculate the band structure for Mo1−x W x S2 and a modified effective-mass-approximation compact band model is proposed to fit the TB result. With information about the compact band model, analytical models can be obtained for the density of states and square of the group velocity. The impact of alloy scattering and phonon scattering on the electron mobility of Mo1−x W x S2 is investigated.
URI: http://hdl.handle.net/11455/95544
文章連結: https://www.ingentaconnect.com/contentone/asp/jnn/2017/00000017/00000011/art00121#
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