The Fabrication and Characterization of Well Aligned Petal-Like Arsenic-Doped Zinc Oxide Microrods

Arsenic-doped petal-like zinc oxide microrods are grown on silicon(100)substrates by the chemical vapor deposition method without the use of catalysts.Scanning electron microscopy shows that As-doped petal-like ZnO microrods with a preferred c−axial orientation are obtained,which is well in accordance with x-ray diffraction analysis.The obtained ZnO microrods have uniform lengths of about 2µm and side lengths of about 100 nm.As-related acceptor emissions are observed from photoluminescence spectra of the ZnO microrods at a temperature of 11 K.The acceptor binding energy is estimated to be 128 meV.