info:eu-repo/semantics/article
Electrical properties and luminescence of single ZnO/MgO core/shell nanowires
Fecha
2014-03Registro en:
Grinblat, Gustavo Sergio; Bern, F.; Barzola Quiquia, J.; Tirado, Monica Cecilia; Comedi, David Mario; et al.; Electrical properties and luminescence of single ZnO/MgO core/shell nanowires; American Institute of Physics; Applied Physics Letters; 104; 10; 3-2014; 1-5
0003-6951
CONICET Digital
CONICET
Autor
Grinblat, Gustavo Sergio
Bern, F.
Barzola Quiquia, J.
Tirado, Monica Cecilia
Comedi, David Mario
Esquinazi, P.
Resumen
To neutralise the influence of the surface of ZnO nanowires for photonics and optoelectronic applications, we have covered them with insulating MgO film and individually contacted them for electrical characterisation. We show that such a metal-insulator-semiconductor-type nanodevice exhibits a high diode ideality factor of 3.4 below 1 V. MgO shell passivates ZnO surface states and provides confining barriers to electrons and holes within the ZnO core, favouring excitonic ultraviolet radiative recombination, while suppressing defect-related luminescence in the visible and improving electrical conductivity. The results indicate the potential use of ZnO/MgO nanowires as a convenient building block for nano-optoelectronic devices.