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- W3013041736 abstract "Abstract Novel near infrared (NIR) emitting phosphor, Gd2O2S codoped with Nd3+ and Yb3+ was synthesized by one step combustion synthesis and characterized with X-ray diffraction, photoluminescence emission, photoluminescence excitation spectra and fluorescence decay measurements. The good connectivity with grains and the semi-sphere line structure was found by TEM. The functional group analysis was carried out by Fourier transform infrared (FTIR) spectroscopic techniques. The prepared phosphor gives emission spectra in NIR region centred at 978 nm for Yb3+ and at 890 nm, 1065 nm, 1320 nm for Nd3+ doped samples. For codped samples the peaks at 890 nm and 1320 nm have been eliminated. The emission was recorded under 800 nm excitation and an efficient Nd3+ → Yb3+ resonant and phonon-assisted energy transfer processes have been observed. It have been studied using steady-state and time-resolved optical spectroscopies. Results indicate that the energy transfer occurs via nonradiative electric dipole–dipole processes and is enhanced with the concentration of Yb3+ acceptor ions, having an efficiency higher than 75% for the glass doped with 1 mol% of Nd2O3 and 4 mol% of Yb2O3." @default.
- W3013041736 created "2020-04-03" @default.
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- W3013041736 date "2021-01-01" @default.
- W3013041736 modified "2023-09-28" @default.
- W3013041736 title "Efficient energy transfer between Nd3+ → Yb3+ codoped Gd2O2S host for NIR emission" @default.
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- W3013041736 doi "https://doi.org/10.1016/j.matpr.2020.03.097" @default.
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