期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 817, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2019.152705
关键词
Phosphors; Down-conversion; Red emission; Solid-state illumination
资金
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - the Ministry of Science, ICT and Future Planning [2018R1A2B6005179]
- National Research Foundation of Korea [22A20131112367] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The Sm3+-activated NaSrLa(MoO4)O-3 phosphors were synthesized by the solid-state reaction technique. Upon 403 nm excitation, bright reddish-orange emissions arising from the (4)G(5/2) -> (H-6(5/2), H-6(7/2), H-6(9/2) and H-6(11/2)) transitions were gained in these resultant compounds. The optimal luminescence intensity was obtained at the dopant concentration of 4 mol% and the dipole-dipole interaction mechanism was contributed to the concentration quenching process in the NaSrLa(MoO4)O-3:Sm3+ phosphors. The temperature dependent luminescent properties were discussed in detail and the crossover process was responsible for the involved thermal quenching behavior. At a forward bias current of 100 mA, the fabricated LED lamp emitted reddish-orange light with the color coordinate of (0.602, 0.316). These properties demonstrated that the Sm3+-activated NaSrLa(MoO4)O-3 phosphors were promising red-emitting materials for solid-state illumination. (C) 2019 Elsevier B.V. All rights reserved.
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