1D aligned, n–p and n–n type ZnO heterojunction nanofibers for NO2 sensors: exploration of conduction mechanism using in situ impedance spectroscopy

Abstract

1D aligned n–p type ZnO/Bi2O3 and n–n type ZnO/In2O3 heterojunction nanofibers have been developed via coaxial electrospinning approach and its complex sensing mechanisms have been deduced using in situ AC impedance spectroscopic studies.