TY - JOUR
T1 - Luminescence enhancement of LiSrPO4:Eu2+ phosphor by Mg2+ ion addition
AU - Kamei, Shinnosuke
AU - Hatsumori, Tomoki
AU - Hasegawa, Takuya
AU - Ishigaki, Tadashi
AU - Uematsu, Kazuyoshi
AU - Toda, Kenji
AU - Sato, Mineo
N1 - Funding Information:
This work was supported by a project from the Center for Transdisciplinary Research, Niigata University and NEDO, New Energy and Industrial Technology Development Organization (Rare Metal Substitute Materials Development Project Development of Technology for Reducing Tb and Eu Usage in Phosphors for Fluorescent Lamp by High-speed Material Synthesis and Evaluation).
Publisher Copyright:
© 2018, © 2018 Informa UK Limited, trading as Taylor & Francis Group.
PY - 2019/9/19
Y1 - 2019/9/19
N2 - Mg-doped LiSrPO4:Eu2+ (Li(Sr, Mg)PO4:Eu2+) phosphors, in which some Sr2+ ions were replaced by Mg2+ ions, were prepared using a conventional solid-state reaction method. The crystal structure of the phosphors was hexagonal, which is the high-temperature phase of LiSrPO4, even though synthesis was carried out at a relatively low temperature of 900 °C. Fluorescence could be efficiently excited in the 220–400 nm ultraviolet region, and bright blue emission was produced with a peak at 448 nm. The emission intensity was higher than that for LiSrPO4:Eu2+ without Mg doping, and a lower Eu content (1 mol%) was required in order to reach the maximum intensity. These results indicate that the blue-emitting Li(Sr, Mg)PO4:Eu2+ phosphor is a promising candidate for phosphor-conversion white Light Emitting Diodes.
AB - Mg-doped LiSrPO4:Eu2+ (Li(Sr, Mg)PO4:Eu2+) phosphors, in which some Sr2+ ions were replaced by Mg2+ ions, were prepared using a conventional solid-state reaction method. The crystal structure of the phosphors was hexagonal, which is the high-temperature phase of LiSrPO4, even though synthesis was carried out at a relatively low temperature of 900 °C. Fluorescence could be efficiently excited in the 220–400 nm ultraviolet region, and bright blue emission was produced with a peak at 448 nm. The emission intensity was higher than that for LiSrPO4:Eu2+ without Mg doping, and a lower Eu content (1 mol%) was required in order to reach the maximum intensity. These results indicate that the blue-emitting Li(Sr, Mg)PO4:Eu2+ phosphor is a promising candidate for phosphor-conversion white Light Emitting Diodes.
KW - chemical synthesis
KW - inorganic compounds
KW - Optical materials
KW - phosphors
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U2 - 10.1080/14328917.2018.1482650
DO - 10.1080/14328917.2018.1482650
M3 - Article
AN - SCOPUS:85047909989
SN - 1432-8917
VL - 23
SP - 359
EP - 362
JO - Materials Research Innovations
JF - Materials Research Innovations
IS - 6
ER -