Abstract
Different concentrations of Sm3+-doped yttrium aluminum borate (YAl3(BO3)4) phosphors were prepared by solid-state reaction method. The phase analysis has been carried out by X-ray diffraction studies. Fluorescence properties were investigated through emission, excitation and decay measurements. Upon 404nm excitation, YAl3(BO3)4:Sm3+ phosphors exhibit their characteristic emission lines at 564nm (4G5/2→6H5/2), 600nm (4G5/2→6H7/2), 646nm (4G5/2→6H9/2) and 707nm (4G5/2→6H11/2). Both emission and excitation spectra show a luminescence quenching beyond 0.01mole concentration of Sm3+ ions due to the energy transfer among the excited Sm3+ ions at higher concentrations. The YAl3(BO3)4:0.01Sm3+ phosphor can be used as a promising material producing intense orange-red emission for various optical applications.
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