Controllable synthesis of vertically aligned ZnO nanorod arrays in aqueous solution |
| |
Authors: | Ma Shuang Fang Guojia Li Chun Sheng Su Fang Linggang Fu Qiang Zhao Xing-Zhong |
| |
Affiliation: | Key Laboratory of Acoustic and Photonic Materials and Devices of Ministry of Education, Department of Physics and Center of Nanoscience and Nanotechnology Research, Wuhan University, P R China. |
| |
Abstract: | High-density well-aligned ZnO nanorod array was successfully synthesized on a large-area magnetron sputtering deposited Al doped ZnO film-coated Si (AZO/Si) substrate via a convenient solution method. X-ray diffraction and scanning electron microscopy show that the nanorods are well-oriented perpendicular to the substrate. The influences of the reaction temperature, time, on the size and shapes of the as-prepared ZnO nanorods (ZNs) samples have been studied. The length and diameter of the nanorods became bigger when a longer reaction time was used. When the temperature is elevated to 130 degrees C, a new conical ZNs was synthesized. Room-temperature photoluminescence (PL) spectra of all the ZnO products showed a strong ultraviolet (UV) emission. The photoluminescence from free excitons of the ZNs synthesized at higher temperature reflects the high purity and nearly defect free structure of nanorods. The well-aligned feature of the nanorod array is attributed to the nanorods' epitaxial growth from the AZO films. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|