Piezotronically modified double Schottky barriers in ZnO varistors.

Raidl, Nadine; Supancic, Peter; Danzer, Robert; Hofstätter, Michael · Adv Mater · 2015

basic_science · Level V

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Abstract

Double Schottky barriers in ZnO are modified piezotronically by the application of mechanical stresses. New effects such as the enhancement of the potential barrier height and the increase or decrease of the natural barrier asymmetry are presented. Also, an extended model for the piezotronic modification of double Schottky barriers is given.