Fabrication and characterization of highly ordered phosphorus-doped ZnO nanocombs

The high-quality phosphorus-doped ZnO nanocombs were synthesized by the simple chemical vapor deposition method without use of any catalyst. The images of field-emission scanning electron microscopy show that the phosphorus-doped ZnO nanocombs have a uniform length of 8 lam with the diameter of 70 nm and the cusp of the teeth of 20 nm. The measurement results of selected-area electron diffraction pattern indicate that the phosphorus-doped ZnO nanocombs are single crystalline structure. The phosphorus related acceptor emission was observed in the photoluminescence spectra of phosphorus-doped ZnO nanocombs at 11 K. The acceptor binding energy is estimated to be similar to 127 meV. (C) 2012 Elsevier Ltd. All rights reserved.