Synthesis,characterization and photoluminescence of ZnO:Cd rosette-like nanostructures using solution process |
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| Authors: | Waleed E Mahmoud AM Al-Sanoosi |
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| Institution: | 1. Dipartimento di Fisica, Università degli Studi di Palermo, Viale delle Scienze, Edificio 18, 90128 Palermo, Italy;2. Dipartimento STEMBIO, Via delle Scienze, Ed. 16, 90128 Palermo, Italy;3. Dipartimento dell’Energia, Università degli Studi di Palermo, Viale delle Scienze, Edificio 6, 90128 Palermo, Italy;4. INFN Gruppo V, Via Santa Sofia 64, 95123 Catania, Italy;5. Laboratori Nazionali del Sud INFN, Via Santa Sofia 65, 95123 Catania, Italy;6. Museo Storico della Fisica e Centro Studi e Ricerche “E. Fermi” Compendio del Viminale, Piazza del Viminale 1, 00184 Roma, Italy;7. Azienda Sanitaria Provinciale N 2, Pres. Osped. “M. Raimondi”, Via Forlanini 5, S. Cataldo, Italy;1. Interdisciplinary Materials Science, Vanderbilt University, Nashville, TN 37235, United States;2. Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN 37235, United States;3. Mechanical Engineering, Vanderbilt University, Nashville, TN 37235, United States;1. Instituto de Ciencia de Materiales de Madrid, CSIC, 28049 Madrid, Spain;2. Department of Physics, Imperial College London, London SW7 2AZ, United Kingdom;3. ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot OX11 0QX, United Kingdom;4. Institut Laue-Langevin, 39042 Grenoble Cedex, France;5. Universidad Politécnica de Cartagena, Plaza del Hospital 1, 30202 Cartagena, Spain;6. Instituto de Nanociencia, Nanotecnología y Materiales Moleculares (INAMOL), Universidad de Castilla-La Mancha, 45071 Toledo, Spain;1. Prof. C.N. R. Rao Center for Advanced Materials, Tumkur University, Tumkur 572103, India;2. Department of Physics, Acharya Institute of Graduate Studies, Bangalore 560107, India;3. Department of Physics, B.M.S. Institute of Technology and Management, Visveswaraya Technological University Affiliated, Bangalore 560064, India |
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| Abstract: | Well crystalline undoped and Cd-doped ZnO rosette-like structures were successfully synthesized at low temperature (80 °C) via solution process technique during 30 min. Zinc nitrate, cadmium nitrate, sodium hydroxide and hexamine were used as starting materials. The morphology and microstructure were determined by field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX) and photoluminescence (PL) spectroscopy. X-ray diffraction indicated that the structure has a single phase with wurtzite structure. FESEM indicated that rosette like structures have been formed. This rosette consists of nanorods with length 210 and 460 nm and diameter 50 and 74 nm for undoped and Cd doped ZnO, respectively. HRTEM showed a decrease in the lattice parameter after the Cd doping. EDX showed that the amount of Cd incorporated into ZnO is 6.4 wt.%. Photoluminescence measurements taken on both doped and undoped samples showed that, in the Cd-doped ZnO nanostructures, the band-edge UV emission is blue shifted and the broad green emission intensity decreased. |
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