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Cu2+ Doped PVA Passivated ZnSe Nanoparticles-Preparation, Characterization and Properties

Cu2+ doped ZnSe nanoparticles are prepared by simple chemical method at room temperature with polyvinyl alcohol (PVA) as the passivating agent. The prepared sample is characterized by using X-ray diffraction, optical, photoluminescence, electron paramagnetic resonance (EPR) and FT-IR techniques. The average crystallite size is calculated from X-ray diffraction pattern and it is about 8 nm. The presence of the paramagnetic Cu2+ species in ZnSe is identified by optical and EPR measurements. The site symmetry for Cu2+ is ascribed as tetragonally distorted octahedral site symmetry. Crystal field, spin-Hamiltonian and bonding parameters are evaluated. Room temperature photoluminescence spectrum of Cu2+ doped ZnSe exhibits emission peaks at 343, 353 and 411 nm which corresponds to UV region at the excitation wavelength of 310 nm. FT-IR spectrum indicates the presence of various functional groups of PVA in ZnSe nanoparticles. Different physical parameters are also evaluated for the prepared sample.

Authors:   Sk. Muntaz Begum, M. C. Rao, R. V. S. S. N. Ravikumar
Journal:   Journal of Inorganic and Organometallic Polymers and Materials
Year:   2012
Pages:   1
DOI:   10.1007/s10904-012-9783-8
Publication date:   25-Nov-2012
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