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Structural, morphological and photoluminescence properties of W-doped ZnO nanostructures |
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| Authors: | BD Ngom O Sakho JB Kana L Guerbous M Maaza |
| Institution: | a Groupes de physique du Solide et Sciences des Matériaux (GPSSM), Faculté des Sciences et Techniques Université Cheikh Anta Diop de Dakar (UCAD), B.P. 25114, Dakar-Fann Dakar, Senegal b NANO-Sciences Laboratories, Materials Research Group, iThemba LABS, National Research Foundation, South Africa c Department of Physics, Institute of Materials, University of Pretoria, Pretoria, South Africa d Departement de physique, Université Yaoundé 1, Yaoundé, Cameroun e Nuclear Research Center of Algiers - CRNA, 02 Bd Frantz Fanon BP 399 Alger Gare, Algiers, Algeria f Centre for Energy Research and Development, Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria |
| Abstract: | W-doped ZnO nanostructures were synthesized at substrate temperature of 600 °C by pulsed laser deposition (PLD), from different wt% of WO3 and ZnO mixed 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. |
| Keywords: | 61 10 &minus I 68 35 D 85 40 R 74 25 Gz 81 15 Z |
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