Abstract
A series of single-component Sr3Gd1−x−y(BO3)3:xCe3+,yTb3+ phosphors were prepared via a conventional high temperature solid-state method, and their luminescent properties and energy transfer process were investigated. The optimal Tb3+ emission behavior in Sr3Gd1−y(BO3)3:yTb3+ series was determined, and was further optimized by the introduction of Ce3+. The Sr3Gd1−x−y(BO3)3:xCe3+,yTb3+ phosphor system can be efficiently excited at wavelength ranging from 250 to 400 nm. As a result of fine-tuning of the emission composition of the Ce3+ and Tb3+ ions, blue-violet (413 nm of Ce3+) and green (mainly 489 and 544 nm of Tb3+) double-emitting phosphor can be obtained. Moreover, the efficient resonant energy transfer from Ce3+ to Tb3+ ions was demonstrated by the luminescence spectra and fluorescence decay curves.
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