Synthesis and optical characterization of ZnO and ZnO: Mn nanoparticles

Authors

Abstract

ZnO and ZnO: Mn nanoparticles synthesized via reve-rse micelle method. The size, structural and optical properties of nanoparticles was investigated by XRD, TEM and UV-Vis spectroscopy. The XRD results indica-ted that the synthesized nanoparticles had a pure wur-tzite (hexagonal phase) structure. The various optical properties of these nanocrystals such as extinction coefficient, optical band gap energy, Urbach energy, threshold wavelength, penetration depth, refractive in-dex, dielectric constants and optical conductivity have been analyzed by using UV-Vis data

Keywords


Cruz-Va´zquez, C.; Bernal, R.; Burruel-Ibarra, S.E.; Grijalva-Monteverde, H.; Barboza-lores, M.; «Thermoluminescence
properties of new ZnO nanophosphors exposed to beta irradiation» Optical Materials
27: 1235-1239, 2005.
Kumbhakar, P.; Singh, D.; Tiwary, C.S.; Mitra, A.K.; «chemical synthesis and visible photoluminescence
emission from monodispersed zno nanoparticles» chalcogenide letters l 5: 387-394, 2008.
Kathirvel, P.; Manoharan, D.; Mohan, S.M.; Kumar S.; «Spectral Investigations of Chemical Bath
Deposited Zinc Oxide Thin Films – Ammonia Gas Sensor» Journal of Optoelectronic and
Biomedical Materials 1: 25-33, 2009.
Jayakumar, O.D.; Gopalakrishnan, I.K.; Kadam, R.M.; Vinu, A.; Asthana, A.; Tyagi, A.K.; “Magnetization
and structural studies of Mn doped ZnO nanoparticles: Prepared by reverse micelle method” Journal of
Crystal Growth 300: 358-363, 2007.
Islam, M.R.; Podder, J.; «Optical properties of ZnO nano fiber thin films grown by spray pyrolysis of zinc
acetate precursor» Cryst. Res. Technol. 44: 286-292, 2009.
Yakuphanoglu, F.; Sekerci, M.; «Optical characterization of an amorphous organic thin film» Optica
Applicata 2: 209-214, 2005.
Caponetti, E.; Pedone, L.; Chillura Martino, D.; Panto, V.; Turco Liveri, V.; «Synthesis, size control,
and passivation of CdS nanoparticles in water/AOT/n-heptane microemulsions» Materials Science and
Engineering 23: 531-539, 2003.
Srivastava, M.; Ojha, A.K.; Chaubey, S.; Materny, A.; «Synthesis and optical characterization of nanocrystalline
NiFe2O4 structures» Journal of Alloys and Compounds 481: 515-519, 2009.