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Example fits of I–V sweeps to the back-to-back Schottky diode equation for (a) Cr/Au contacts on SnS and (b) Ti/Au contacts on SnS. I–V sweeps were measured between adjacent contacts. (c) Schottky-Mott band alignment of metals and SnS. χ is the electron affinity of SnS, Eg is the band gap, Evac is the vacuum level, EC is the conduction band minimum, and EV is the valence band maximum. (d) Experimental band alignment.
