Synthesis of ordered ultrathin ZnO nanowire bundles on an indium-tin oxide substrate.
Ultrathin ZnO nanowire bundles have been synthesized on an indium-tin oxide substrate without any catalyst by using a simple thermal evaporation method, where self-organized ZnO nanowire bundles were grown on the hexagonal heads of ZnO nanocolumns. The nanowires obtained typically have diameters of 8 nm, with lengths extending to 0.25 microm. The size is the same order of magnitude as the ZnO exciton Bohr radius (aB). Room-temperature photoluminescence measurement shows a prominent peak at 374 nm (3.32 eV), which is about 100 meV blue-shifted from the bulk ZnO emission.
Fang
Fang
F
Key Laboratory of Excited State Processes, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Open Economic Zone, Changchun 130033, People's Republic of China.
Zhao
Dongxu
D
Shen
Dezhen
D
Zhang
Jiying
J
Li
Binghui
B