The photoluminescence properties of a blue phosphor—Eu2+ doped silicate lutetium strontium with triple sites

Eu2+ doped silicate lutetium strontium Sr3Lu2(Si3O9)2 (SLSO): m Eu2+ (m=0.01, 0.015, 0.02, 0.03, 0.04, 0.05, 0.06) phosphors have been synthesized by using solid-state reaction on 1350 ºC. We suppose there are three lattice sites, named Eu2+(I), Eu2+(II), and Eu2+(III) in SLSO: Eu2+, from the photol...

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Published inMaterials today communications Vol. 35; p. 105964
Main Authors Zhou, Zhen, Zhang, Qian, Jin, Ye, Lin, Huayan, Li, Yuyan, Fang, Fei, Chen, Hongtao, Wei, Qiang, Lin, Hong, Feng, Guoqing, Meng, Fancheng, Cao, Liangliang, Ren, Haishen
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.06.2023
Subjects
Blue shift
Crystallographic site
LED phosphor
Sr3Lu2(Si3O9)2: Eu2
Thermal stability
Crystallographic site
Blue shift
Sr3Lu2(Si3O9)2: Eu2
LED phosphor
Thermal stability
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Summary:Eu2+ doped silicate lutetium strontium Sr3Lu2(Si3O9)2 (SLSO): m Eu2+ (m=0.01, 0.015, 0.02, 0.03, 0.04, 0.05, 0.06) phosphors have been synthesized by using solid-state reaction on 1350 ºC. We suppose there are three lattice sites, named Eu2+(I), Eu2+(II), and Eu2+(III) in SLSO: Eu2+, from the photoluminescence (PL) spectra and the decay curves. As Eu2+ concentration increases, energy transfer (ET) between Eu2+ ions appear, and the mechanism was dipole-dipole (d-d) interaction. Besides, temperature-dependent photoluminescence of SLSO: 0.015Eu2+ is investigated. The emission shifts blue with temperature rising. From the temperature-dependent emission, the activation energy, ∆E, is ∼0.289 eV. CIE coordinate is (0.16, 0.03) for SLSO: 0.015Eu2+. All those results show that SLSO: Eu2+, as a UV-LED blue phosphor, has possible application prospects. [Display omitted]
ISSN:2352-4928
2352-4928
DOI:10.1016/j.mtcomm.2023.105964