Site-selective luminescence of Bi 3+ in the YBO 3 host under vacuum ultraviolet excitation at low temperature

Abstract

(Y 0.99Bi 0.01)BO 3 phosphor was prepared and its luminescent properties were investigated using the synchrotron radiation instrument in this paper. Site-selective luminescence of Bi 3+ in the YBO 3 host was demonstrated by exciting/monitoring with different wavelengths at low temperature in this research. At the same time, the energy transfer between the centers of Bi 3+ ions occupying different symmetric sites was observed. The excited energy levels of Bi 3+ were identified through assigning the emission and excitation spectra. The paths and mechanism of energy transfer between the centers of Bi 3+ occupying different symmetric sites were discussed finally.