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Structure and Fluorescent Properties of Sr0.69La0.31(1–x)F2.31:xEu3+ Phosphors

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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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Keywords: ENERGY TRANSFER; FLUORIDE; PHOSPHOR; PHOTOLUMINESCENCE PROPERTIES; THERMAL STABILITY

Document Type: Short Communication

Publication date: March 1, 2017

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  • Nanoscience and Nanotechnology Letters (NNL) is a multidisciplinary peer-reviewed journal consolidating nanoscale research activities in all disciplines of science, engineering and medicine into a single and unique reference source. NNL provides the means for scientists, engineers, medical experts and technocrats to publish original short research articles as communications/letters of important new scientific and technological findings, encompassing the fundamental and applied research in all disciplines of the physical sciences, engineering and medicine.
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