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Characterization of ZnO nanorods grown on Si substrates coated with NiCl 2
Author(s) -
Wang Jie,
Zhuang Huizhao,
Li Junlin,
Xu Peng
Publication year - 2010
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.201000311
Subject(s) - nanorod , photoluminescence , high resolution transmission electron microscopy , materials science , chemical bath deposition , chemical vapor deposition , diffraction , nanotechnology , transmission electron microscopy , scanning electron microscope , spectroscopy , chemical engineering , analytical chemistry (journal) , thin film , chemistry , optoelectronics , optics , composite material , physics , engineering , chromatography , quantum mechanics
ZnO nanorods were synthesized on NiCl 2 ‐coated Si substrates via a chemical vapor deposition (CVD) process. The as‐fabricated nanorods with diameters ranging from 150 nm to 200 nm and lengths up to several tens of micrometers grew preferentially arranged along [0001] direction, perpendicular to the (0002) plane. The clear lattice fringes in HRTEM image demonstrated the growth of good quality hexagonal single‐crystalline ZnO. Room temperature photoluminescence (PL) spectra illustrated that the ZnO nanorods exhibit strong UV emission peak and green emission peak, peak centers located at 388 nm and 506 nm. A possible growth mechanism based on the study of our X‐ray diffraction (XRD), electron microscopy and PL spectroscopy was proposed, emphasizing the effect of NiCl 2 solution (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)