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Structural, morphological and photoluminescence properties of W-doped ZnO nanostructures

W-doped ZnO nanostructures were synthesized at substrate temperature of 600 8C by pulsed laser deposition (PLD), from different wt% ofWO3 and ZnOmixed together. The resulting nanostructures have been characterized by X-ray diffraction, scanning electron microscopy, atomic force microscopy and photoluminescence for structural, surface morphology and optical properties as function of W-doping. XRD results show that the films have preferred orientation along a c-axis (0 0 L) plane. We have observed nanorods on all samples, except that W-doped samples show perfectly aligned nanorods. The nanorods exhibit near-band-edge (NBE) ultraviolet (UV) and violet emissions with strong deep-level blue emissions and green emissions at room temperature.

Auteur(s) : B.D. Ngom, O. Sakho, N. Manyala, J.B. Kana, N. Mlungisi, L. Guerbous, A.Y. Fasasi, M. Maaza, A.C. Beye
Pages : 7314–7318
Année de publication : 2009
Revue : Applied Surface Science
N° de volume : 255
Type : Article
Mise en ligne par : NGOM Balla Diop