Contacts to solution-synthesized SnS nanoribbons: dependence of barrier height on metal work function.

ABSTRACT: Tin(ii) monosulfide (SnS) is a layered, anisotropic material that is of interest as a two-dimensional semiconductor for opto-electronic, thermoelectric, and piezoelectric applications. In this study, the effect of work function on contact behavior was investigated. Ni/Au, Pd/Au, Cr/Au, and Ti/Au contacts were fabricated onto individual, solution-synthesized, p-type SnS nanoribbons. The lower work function metals (Cr and Ti) formed Schottky contacts, whereas the higher work function metals (Ni and Pd) formed ohmic or semi-ohmic contacts. Of the ohmic contacts, Ni was found to have a lower contact resistance (∼10^-4 Ω cm² or lower) than Pd (∼10^-3 Ω cm² or lower). Both the calculated Schottky barriers (0.39 and 0.50 eV) for Cr and Ti, respectively, a

SUBMITTER: Hajzus JR 

PROVIDER: S-EPMC5826728 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature