کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1808540 | 1525168 | 2016 | 7 صفحه PDF | دانلود رایگان |

Sm3+ single-doped and Sm3+, Dy3+ co-doped NaGdTiO4 phosphors were synthesized via a traditional high temperature solid-state reaction method. The crystal structure was characterized by means of x-ray diffraction. The luminescence properties and energy transfer in Sm3+ single-doped and Sm3+, Dy3+ co-doped NaGdTiO4 phosphors were systematically studied. The electric dipole-dipole interaction between Sm3+ ions was identified as the main mechanism for the concentration dependent fluorescence quenching in Sm3+ single-doped samples. It is confirmed that there is almost no energy transfer between Sm3+ and Dy3+ in Sm3+, Dy3+ co-doped samples. The introduction of Sm3+ can compensate the red emission component and adjust the colorimetric performance of Dy3+-doped NaGdTiO4 phosphors. Moreover, different emitting colors can be obtained from Sm3+, Dy3+ co-doped NaGdTiO4 phosphor by changing the excitation pathway.
Journal: Physica B: Condensed Matter - Volume 481, 15 January 2016, Pages 197–203