The charge transport in zinc-oxide piezosemiconductive nanowires under purely vertical compressive or tensile strains is investigated. For simplicity, only the additional band bending originated by the piezoelectric charges has been accounted for. Moreover, a constant volumetric piezoelectric charge density is assumed, distributed within a maximum distance δ piezo from the two junctions between the metal ends and the nanowire. Examples demonstrate that the carrier concentration, the energy conduction band profile, and the current–voltage characteristics significantly depend on δ piezo . Therefore, we propose the use of currentvoltage measurements to obtain information on δ piezo in strained piezosemiconductors.
Current-Voltage Characteristics of ZnO Nanowires Under Uniaxial Loading / Araneo, Rodolfo; Bini, Fabiano; M., Pea; A., Notargiacomo; A., Rinaldi; Lovat, Giampiero; Celozzi, Salvatore. - In: IEEE TRANSACTIONS ON NANOTECHNOLOGY. - ISSN 1536-125X. - 13:4(2014), pp. 724-735. [10.1109/TNANO.2014.2318137]
Current-Voltage Characteristics of ZnO Nanowires Under Uniaxial Loading
ARANEO, Rodolfo;BINI, FABIANO;LOVAT, GIAMPIERO;CELOZZI, Salvatore
2014
Abstract
The charge transport in zinc-oxide piezosemiconductive nanowires under purely vertical compressive or tensile strains is investigated. For simplicity, only the additional band bending originated by the piezoelectric charges has been accounted for. Moreover, a constant volumetric piezoelectric charge density is assumed, distributed within a maximum distance δ piezo from the two junctions between the metal ends and the nanowire. Examples demonstrate that the carrier concentration, the energy conduction band profile, and the current–voltage characteristics significantly depend on δ piezo . Therefore, we propose the use of currentvoltage measurements to obtain information on δ piezo in strained piezosemiconductors.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
