水热法制备氧化锌阵列及其形貌控制
Hydrothermal Synthesis of ZnO Nanorod Arrays and Their Morphology Control
College of Physical Science and Technology, Central China Normal University, Wuhan 430079, China
Received date: 2006-06-28
Revised date: 2006-09-11
Online published: 2007-05-20
李必慧 , 唐一文 , 张新 , 姜云 , 罗利娟 , 贾志勇 . 水热法制备氧化锌阵列及其形貌控制[J]. 无机材料学报, 2007 , 22(3) : 403 -406 . DOI: 10.3724/SP.J.1077.2007.00403
By using the hydrothermal method, the ZnO nanorod arrays with different morphologies were synthesized on ZnO nanoparticle-coated transparent conductivity glasses (TCO) at low temperatures by controlling the pH value of precursory solutions. The ZnO nanorod arrays were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), high-resolution transmission electron microscope (HRTEM) and ultraviolet-visible spectrophotometer (UV-Vis). Furthermore, the mechanism was primary discussed. The results show that the ZnO nanorod is a single crystal and it grows along c axis. When the pH value is about 10.5, the array is well-aligned and the diameter of the nanorod is uniform. Optical characterization shows that the optical transmittance of the film is higher than 80% in the visible wavelength and its band gap is about 3.25eV.
Key words: hydrothermal; ZnO array; pH value; morphology
/
〈 |
|
〉 |