期刊
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
卷 349, 期 1-3, 页码 202-206出版社
ELSEVIER
DOI: 10.1016/j.colsurfa.2009.08.019
关键词
Mn-doped ZnO; Nanorod; Photoluminescence; Solvothermal
资金
- National Nature Science Foundation [50672075]
- NCET
- MOE [B08040]
- Xi'an Science & Technology Foundation [CXY08006]
- NPU of China [NPU-FFR200703]
Mn-doped ZnO nanorods (composition: Mn0.046Zn0.954O) were grown by a simple solvothermal technique. The morphological, structural and optical properties of the as-prepared nanorods were investigated by means of transmission electron microscopy, high-resolution transmission electron microscopy, X-ray diffraction, and photoluminescence. The results showed that the sample had rod-like morphology and that the preferential growth direction was along the c-axis. The doping of Mn2+ ions has significant influences on the optical properties of ZnO nanorods. Low-temperature photoluminescence spectra of Mn-doped ZnO nanorods exhibit a strong near band-edge emission at 370.8 nm and a weak deep-level emission around 525 nm, indicating the concentrations of the defects responsible for deep-level emissions are reduced on doping. The dynamic process of the UV emission for Mn-doped ZnO nanorods was discussed. (C) 2009 Elsevier B.V. All rights reserved.
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