|
|||||
|
|
The structural and optical properties of ZnO nanorod arrays |
|
| Authors: | XQ Meng DZ Shen JY Zhang YM Lu ZZ Zhang XW Fan |
| Institution: | a Key Laboratory of Excited State Processes, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, 16 East Nan-Hu Road, Open Economic Zone, Changchun 130033, People's Republic of China b Graduate School of the Chinese Academy of Sciences, People's Republic of China c Center for Advanced Optoelectronic Functional Material Research, Northeast Normal University, Changchun 130024, People's Republic of China |
| Abstract: | High quality vertical-aligned ZnO nanorod arrays were synthesized by a simple vapor transport process on Si (111) substrate at a low temperature of 520 °C. Field-emission scanning electron microscopy (FESEM) showed the nanorods have a uniform length of about 1 μm with diameters of 40-120 nm. X-ray diffraction (XRD) analysis confirmed that the nanorods are c-axis orientated. Selected area electron diffraction (SAED) analysis demonstrated the individual nanorod is single crystal. Photoluminescence (PL) measurements were adopted to analyze the optical properties of the nanorods both a strong UV emission and a weak deep-level emission were observed. The optical properties of the samples were also tested after annealing in oxygen atmosphere under different temperatures, deep-level related emission was found disappeared at 600 °C. The dependence of the optical properties on the annealing temperatures was also discussed. |
| Keywords: | 73 61 Tm 78 66 &minus w 81 05 Dz |
| 本文献已被 ScienceDirect 等数据库收录！ | |