Synthesis of ZnO three-dimensional architectures and their optical properties

Uniform ZnO urchin-like architectures were synthesized by hydrothermal decomposing Zn(OH)(4)(2-) precursor with the assistance of dodecylamine (DDA) at 180 degrees C for 12 h. FESEM images display that the ZnO 3D urchin-like architectures are constructed of well-aligned ZnO nanorods with diameters of 50-80 nm and lengths up to 2 mu m. Room temperature photoluminescence spectra of ZnO 3D architectures show an intensive ultraviolet emission at similar to 385 nm and weak green emission, which indicated their high structural and optical quality. (C) 2005 Elsevier Ltd. All rights reserved.