Tb3+ doped Sr2(BO3)Cl green emitting phosphor for solid state lighting
1Department of Physics, R.T.M. Nagpur University, Nagpur 440033, India
2Director, BCUD, Gondwana University, Gadchiroli 442605, India
Adv. Mater. Lett., 2014, 5 (10), pp 604-610
Publication Date (Web): Nov 09, 2014
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In this paper we present luminescence results on Tb 3+ doped Sr2(BO3)Cl green phosphor. The vibrational properties of Sr2(BO3)Cl phosphor was studied by Fourier transform infrared spectroscopy. Photoluminescence studies have been carried out to understand the mechanism of excitation and the corresponding emission in the as prepared phosphor. As the Tb3+ ion is commonly used as an activator for the green emission, the excitation and emission spectra indicate that this phosphor can be effectively excited by 380 nm, to exhibit bright green emission centered at 546 nm corresponding to the f→f transition of Tb3 +ions.
Green emitting phosphor, borates, photoluminescence, XRD, SEM, FTIR