Two-dimensional semiconductors with possible high room temperature mobility
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We have calculated the longitudinal acoustic phonon limited electron mobility of 14 two-dimensional semiconductors with composition of MX2, where M (= Mo, W, Sn, Hf, Zr and Pt) is the transition metal, and X is S, Se and Te. We treated the scattering matrix by the deformation potential approximation. We found that out of 14 compounds, MoTe2, HfSe2 and ZrSe2 are promising regarding to their possible high mobility and finite band gap. The phonon limited mobility can be above 2, 500 cm2·V-1·s-1 at room temperature.
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Two-dimensional semiconductors with possible high room temperature mobility
),
Abstract
We have calculated the longitudinal acoustic phonon limited electron mobility of 14 two-dimensional semiconductors with composition of MX2, where M (= Mo, W, Sn, Hf, Zr and Pt) is the transition metal, and X is S, Se and Te. We treated the scattering matrix by the deformation potential approximation. We found that out of 14 compounds, MoTe2, HfSe2 and ZrSe2 are promising regarding to their possible high mobility and finite band gap. The phonon limited mobility can be above 2, 500 cm2·V-1·s-1 at room temperature.
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Acknowledgements
Financial support from the International Science & Technology Cooperation Program of China (No. 2012DFA51430), the Research Grant of Chinese Central Universities (No. ZYGX2013Z001) and Sichuan Youth Science and Technology Innovation Research Team Funding (No. 2011JTD0006) are acknowledged.
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