Structure and Fluorescent Properties of Sr0.69La0.31(1–x)F2.31:xEu3+ Phosphors
A series of novel Sr0.69La0.31(1–x)F2.31:xEu3+ phosphors were prepared via high-temperature solid method. The obtained phosphors were characterized by X-ray powder diffraction (XRD) and photoluminescence (PL) spectroscopy. The XRD pattern of Sr0.69La0.31F2.31 was well indexed to the corresponding standard cards and without extra impurity peaks. The PLE spectrum monitored by 270 nm composed of two strong absorption peaks at 594 nm and 614 nm. With the increase of concentration of Eu3+ ion, emission intensity had an increasing trend and reached a maximum value of x = 0.10, then began to show a downward movement. The main energy transfer mechanism of Eu3+ in Sr0.69La0.31F2.31 phosphor was confirmed to be electric dipole–dipole interaction, and the energy transfer pathway is from the 5D0 to 7F1 and the 5D0 to 7F2.
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Document Type: Short Communication
Publication date: March 1, 2017
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