Growth and Luminescence of Nanowires and Oriented Nanoplate Arrays of Mg Doped ZnO
Sintering of a ZnO-MgO powder mixture under argon flow leads to the growth of elongated Mg doped ZnO structures such as stacks of nanoplates and rods with secondary nanowires in a comb-like arrangement. The nanoplates grow perpendicular to a central axis and have a six-fold symmetry. The hierarchical growth is related to the presence of Mg. Cathodoluminescence (CL) in the scanning electron microscope shows a blue-shift of the ZnO exciton peak as well as changes in the deep level bands due to the influence of Mg.
A. Urbieta et al., "Growth and Luminescence of Nanowires and Oriented Nanoplate Arrays of Mg Doped ZnO", Journal of Nano Research, Vol. 4, pp. 27-32, 2008