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. 2015 Jun 1;5:10699. doi: 10.1038/srep10699

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(a) Output characteristics (I_ds–V_ds) of SL-WS₂ FET at different back-gate voltages ranging from –30 V to +40 V in steps of 10 V. (b) Transfer characteristics (I_ds–V_bg) of the SL-WS₂ FET on SiO₂ substrate with Al/Au contacts. ON/OFF ratio of the device is ~10⁷ at room temperature.