Abstract
SrZn2(PO4)2:Sm3+ phosphor was synthesized by a high temperature solid-state reaction in atmosphere. SrZn2(PO4)2:Sm3+ phosphor is efficiently excited by ultraviolet (UV) and blue light, and the emission peaks are assigned to the transitions of 4G5/2-6H5/2 (563 nm), 4G5/2-6H7/2 (597 nm and 605 nm) and 4G5/2-6H9/2 (644 nm and 653 nm). The emission intensities of SrZn2(PO4)2:Sm3+ are influenced by Sm3+ concentration, and the concentration quenching effect of SrZn2(PO4)2:Sm3+ is also observed. When doping A + (A=Li, Na and K) ions, the emission intensity of SrZn2(PO4)2:Sm3+ can be obviously enhanced. The Commission Internationale de l'Eclairage (CIE) color coordinates of SrZn2(PO4)2:Sm3+ locate in the orange-red region. The results indicate that the phosphor has a potential application in white light emitting diodes (LEDs).
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This work has been supported by the National Natural Science Foundation of China (No.50902042), the Natural Science Foundation of Hebei Province in China (Nos.A2014201035 and E2014201037), and the Education Office Research Foundation of Hebei Province in China (Nos.ZD2014036 and QN2014085).
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Lu, W., Liu, Yf., Wang, Y. et al. Improved luminescent properties of SrZn2(PO4)2:Sm3+ doped with Li+, Na+ and K+ ions. Optoelectron. Lett. 11, 366–369 (2015). https://doi.org/10.1007/s11801-015-5116-9
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DOI: https://doi.org/10.1007/s11801-015-5116-9