Nonlinear optical property and fluorescence quenching behavior of PVP capped ZnS nanoparticles co-doped with Mn2+ and Sm3+

Prasanth, S. ; Irshad, P. ; Raj, D. Rithesh ; Vineeshkumar, T.V. ; Philip, Reji ; Sudarsanakumar, C. (2015) Nonlinear optical property and fluorescence quenching behavior of PVP capped ZnS nanoparticles co-doped with Mn2+ and Sm3+ Journal of Luminescence, 166 . pp. 167-175. ISSN 0022-2313

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Official URL: http://doi.org/10.1016/j.jlumin.2015.05.028

Related URL: http://dx.doi.org/10.1016/j.jlumin.2015.05.028

Abstract

ZnS nanoparticles co-doped with different percentages of Mn2+ and Sm3+ were synthesized by the chemical co-precipitation method using polyvinylpyrrolidone (PVP) as capping agent. Cubic zinc blende phase of the samples was confirmed from X-ray diffraction. The strong interaction between PVP and ZnS nanoparticles was studied from Fourier Transform Infrared (FTIR) spectrum. The band gap values of ZnS and co-doped ZnS nanoparticles were calculated from UV‐Visible spectra. The photoluminescence spectra of pure ZnS nanoparticles showed an emission at 436 nm and when doped with Mn2+ and Sm3+ an extra peak with high intensity was observed at 596 nm. On increasing the mole percentage of dopants the intensity of the extra peak showed an enhancement until a certain concentration and then a reduction with further increase in concentration. The binding parameters were determined by Stern‐Volmer relation. The nonlinear absorption coefficients of the doped and undoped samples were calculated using Z-scan technique.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:121070
Deposited On:09 Jul 2021 05:13
Last Modified:09 Jul 2021 05:13

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