d-d Transition and Electrical Transport in Single Co:ZnO Nanorod

Abstract

This work demonstrated techniques that were applied on the measurements of a single Co:ZnO nanorod. We have resolved photoluminescence peaks that were associated with the d-d transitions and phonon replica due to the presence of the doped cobalt ions which have replaced the Zn ion sites. We also showed temperature dependence of the resistance and the activation energy of single nanorods with different Co doping levels.