Abstract
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.
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One of the authors (Sk. Muntaz Begum) is grateful to the University Grants Commission, Government of India, New Delhi for the award of Maulana Azad National Fellowship (No.F.40-6(M)/2009.
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Muntaz Begum, S., Rao, M.C. & Ravikumar, R.V.S.S.N. Cu2+ Doped PVA Passivated ZnSe Nanoparticles-Preparation, Characterization and Properties. J Inorg Organomet Polym 23, 350–356 (2013). https://doi.org/10.1007/s10904-012-9783-8
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DOI: https://doi.org/10.1007/s10904-012-9783-8