화학공학소재연구정보센터
Materials Chemistry and Physics, Vol.112, No.3, 749-752, 2008
A third kind growth model of tetrapod: Rod-based single crystal ZnO tetrapod nanostructure
in this paper, rod-based ZnO tetrapods were successfully synthesized by burning Zn particles in air covered with two firebricks. The products show hexagonal wurtzite phase. The microstructures of the tetrapod were studied carefully by scanning electron microscope (SEM), transmission electron microscope (TEM), SAED and HRTEM. The results show that tetrapod has single crystalline phase with one broader nanorod growing along [0001] direction, three triangular nanosheets, growing out of the three trisection planes along [10 (1) over bar0] direction, and three epitaxial nanowires, growing from each tip of the triangular nanosheets. Based oil the experimental results, a rod-based growth model was proposed to interpret its growth mechanism. Room temperature photoluminescence spectrum reveals that the ZnO tetrapods have ultra violet (UV) emission band (389 nm) and a green emission band (517 nm). Crown Copyright (C) 2008 Published by Elsevier B.V. All rights reserved.