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- W3165956645 abstract "Abstract A trivalent rare earth ion Sm 3+ (1-5 mol %) doped Poly (vinyl alcohol) (PVA) and Poly (ethylene glycol) (PEG) complex polymer blends were synthesized by using solution casting technique. The spectroscopic characteristics behaviour and Judd-Ofelt (J-O) intensity parameters, oscillatory strengths and radiative properties of the prepared polymer blends were investigated with the help of optical absorption and photoluminescence spectral studies. Well defined UV-VIS-NIR optical absorption bands pertaining Sm 3+ ions are observed in optical absorption spectrum and these bands has been assigned to their respective electronic transitions. The theoretical oscillatory strengths ( f cal ) and Judd-Ofelt (J-O) network framing theory were adopted to evaluate J-O intensity parameters Ω λ ( λ =2,4,6) from the experimental oscillatory strengths ( f exp ). The covalent characteristic nature of the Sm 3+ ions with surrounding ligands within the host polymer matrix was confirmed through bonding parameter (δ). The coordinated environment of Sm 3+ ions and the key significant J-O intensity parameters are used for calculation of spectroscopic radiative properties. Photoluminescence spectrum is obtained and the highly intensified emission peak is observed for the transition 4 G 5/2 → 6 H 7/2 at 595 nm under 401 nm excitation wavelengths. The CIE colour coordinate diagram shows that the present complex polymer films incorporated with Sm 3+ ions are acting as perfect and highly stable material for active reddish-orange emissions." @default.
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- W3165956645 date "2021-05-01" @default.
- W3165956645 modified "2023-10-17" @default.
- W3165956645 title "Judd-Ofelt, radiative properties of Sm<sup>3+</sup> ions doped PVA+PEG complex polymer films from spectral analysis" @default.
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- W3165956645 doi "https://doi.org/10.1088/1742-6596/1913/1/012010" @default.
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