Effect of Cr and Fe Doping on the Structural and Optical Properties of ZnO Nanostructures
In the present study, we have synthesized Cr and Fe doped zinc oxide (ZnO) nanostructures (Zn1-δCraFebO; where δ = a + b = 20%, a = 5, 6, 8 & 10% and b = 15, 14, 12 & 10%) via sol-gel method at different doping concentrations. The synthesized samples were characterized for structural properties by X-ray diffractrometer and field emission scanning electron microscope and the optical properties were carried out through photoluminescence and UVvisible spectroscopy. The particle size calculated through field emission scanning electron microscope varies from 41 to 96 nm for the samples synthesized at different doping concentrations. The optical band gaps calculated through UV-visible spectroscopy are found to be decreasing from 3.27 to 3.02 eV as the doping concentration of Cr increases and Fe decreases.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1097046Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 4230
 R. N. Nickolov, B. V. Donkova, K. I. Milenova, D.R. Mehandjiev, “Porous texture of CuO prepared from copper oxalate precursor,” Adsorpt. Sci. Technol,. vol. 24, 2006, pp. 497-505.
 P. K. Khanna, S. Gaikwad, P.V. Adhyapak, N. Singh, R. Marimuthu, “Synthesis and characterization of copper nanoparticles,” Mater. Lett., vol. 61, 2007, pp. 4711-4714.
 J. Zhang, L. Zhang, X. Peng, X. Wang, “Fabrication of MgO nanobelts using a halide source and their structural characterization,” Appl. Phys. A, vol. 73, 2001, pp. 773–775.
 S. L. Pan, D. D. Zeng, H. L. Zhang, H. L. Li, “Preparation of ordered array of nanoscopic gold rods by template method and its optical properties,” Appl. Phys. A, vol. 70, 2000, pp. 637–640.
 L. Qian, Z. Liu, Y. Mo, H. Yuan, D. Xiao, “Large scale preparation of urchin like Li doped ZnO using simple radio frequency chemical vapor synthesis,” Mater. Lett., vol. 100, 2013, pp.124–126.
 Z. L. Wang, “Splendid one-dimensional nanostructures of zinc oxide: A new nanomaterial family for nanotechnology,” ACS Nano, vol. 2, 2008, pp.1987–92.
 F. M. Juddin, K Iskandar, F. G. Okuyama, “Stable photoluminescence of zinc oxide quantum dots in silica nanoparticles matrix prepared by the combined sol-gel and spray drying method,” J. Appl. Phys., vol. 89, 2001, pp. 6431.
 P. Chand, A. Gaur, A. Kumar, “Structural, optical and ferroelectric behavior of hydrothermally grown ZnO nanostructures,” Superlatt. Microstr., vol. 64, 2013, pp. 331-342.
 S. Kamarnen, M. Bruno, E. Mariani, “Synthesis of ZnO with and without microwaves,” Mater. Res. Bull., vol. 35, 2000, pp. 1843-1847.
 T. Tani, L. Madler, S. E. Pratsinis, “Homogeneous ZnO nanoparticles by flame spray pyrolysis,” J. Nanopart. Res., vol. 4, 2002, pp. 337-343.
 Z.R. Khan, M.S. Khan, M. Zulfequar, M. Shahid Khan, “Optical and structural properties of ZnO thin films fabricated by sol-gel method,” Materials Sciences and Applications, vol. 2, 2011, pp. 340-345.
 Y.S. Kim, W.P. Tai, S.J. Shu, “Effect of Preheating Temperature on Structural and Optical Properties of ZnO thin films by sol-gel process,” Thin Solid Films, vol. 491, No. 1-2, 2005, pp. 153-160.
 N. Orhan, M. C. Baykul, “Characterization of size-controlled ZnO nanorods produced by electrochemical deposition technique,” Solid- State Electronics, vol. 78, 2012, pp. 147-150.
 P. Chand, A. Gaur, A. Kumar, “Structural and optical properties of ZnO nanoparticles synthesized at different pH values,” J. Alloys and Compounds, vol. 539, 2012, pp. 174-178.
 L. Hannachi, N. Bouarissa, “Band parameters for cadmium and zinc chalcogenide compounds,” Physica B, vol.404, 2009, pp. 3650–3654.
 Y. Akaltun, M.A. Yıldırım, A. Ates, M. Yıldırım, “The relationship between refractive index-energy gap and the film thickness effect on the characteristic parameters of CdSe thin films,” Optics Communications, vol. 284, 2011, pp. 2307–2311.
 N. Bouarissa, “Pseudopotential calculations of Cd1-xZnxTe: Energy gaps and dielectric constants,” Physica B, vol. 399, 2007, pp. 126–131.
 F. Mezrag, W.K. Mohamed, N. Bouarissa, “The effect of zinc concentration upon optical and dielectric properties of Cd1-xZnxSe,” Physica B, vol. 405, 2010, pp. 2272–2276.