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Temperature-dependent growth mode of W-doped ZnO nanostructures

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 (000L) 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.

Auteur(s) : B.D. Ngom, M. Chakera, N. Manyalad, B. Lo, M. Maazac, A.C. Beye.
Pages : 6226–6232
Année de publication : 2011
Revue : Surface Science
N° de volume : 257
Type : Article
Mise en ligne par : LO Bassirou