1. SnSe2 field-effect transistors with high drive current.
- Author
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Su, Yang, Ebrish, Mona A., Olson, Eric J., and Koester, Steven J.
- Subjects
FIELD-effect transistors ,ELECTRIC admittance ,ELECTRIC currents ,SCHOTTKY barrier ,TRANSISTORS - Abstract
SnSe2 field-effect transistors fabricated using mechanical exfoliation are reported. Substrate-gated devices with source-to-drain spacing of 0.5 μm have been fabricated with drive current of 160 μA/μm at T = 300 K. The transconductance at a drain-to-source voltage of Vds = 2 V increases from 0.94 μS/μm at 300 K to 4.0 μS/μm at 4.4 K, while the field-effect mobility increases from 8.6 cm2/Vs at 300 K to 28 cm2/Vs at 77 K. The conductance at Vds = 50 mV shows an activation energy of only 5.5 meV, indicating the absence of a significant Schottky barrier at the source and drain contacts. [ABSTRACT FROM AUTHOR]
- Published
- 2013
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