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Temperature-dependent growth mode of W-doped ZnO nanostructures |
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| Authors: | B.D. Ngom M. ChakerN. Manyala B. LoM. Maaza A.C. Beye |
| Affiliation: | a Institut National de la Recherche Scientifique Centre - Énergie Matériaux Télécommunications 1650, Boul. Lionel Boulet, Varennes, Québec J3X 1S2, Canada b Faculté des sciences et Techniques Université Cheikh Anta Diop de Dakar, Dakar, Senegal c Materials Research Group, iThemba LABS, Cape Town, South Africa d Department of Physics, SARCHI Chair in Carbon Technology and Materials, University of Pretoria, Pretoria, South Africa |
| Abstract: | We report on the effects of glass substrate temperature on the crystal structure and morphology of tungsten (W)-doped ZnO nanostructures synthesized by pulsed-laser deposition. X-ray diffraction analysis data shows that the W-doped ZnO thin films exhibit a strongly preferred orientation along a c-axis (0 0 0 L) plane, while scanning electron and atomic force microscopes reveal that well-aligned W-doped ZnO nanorods with unique shape were directly and successfully synthesized at substrate temperature of 550 °C and 600 °C without any underlying catalyst or template. Possible growth mechanism of these nanorods is suggested and discussed. |
| Keywords: | 61.10.&minus I 68.35.D 85.40.R 74.25.Gz 81.15.Z |
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