Journal
INORGANIC CHEMISTRY
Volume 56, Issue 6, Pages 3269-3275Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.inorgchem.6b02647
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Funding
- program of National Natural Science Foundation of China - Beijing Municipal Education Commission [51272282, 51302311]
- program of significant achievement transformation project of colleges and universities of the Central in Beijing - Beijing Municipal Education Commission [ZD20141000201]
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A novel red-emitting Lu3Al5O12:Mn4+ (LuAG:Mn4+) phosphor was synthesized by a solid-state reaction. The emission-band position is shifted to red region by gradually increasing the amount of substitution of Lu3+ for Y3+, eventually yielding fully Y3Al5O12:Mn4+ (YAG:Mn4+). The compared structural and optical properties of the phosphors were investigated. From the experimentally measured spectroscopic data, crystal field parameter Dq and Racah parameters B and C are calculated to be 2127, 1464, and 3620 cm(-1) in LuAG:Mn4+, respectively. In YAG:Mn4+, Dq, B, and C are calculated to be 2082, 1524, and 3740 cm(-1), respectively. Impressively, Ca2+/Li+/Me2+/Sr2+/Sc3+/Na+ dopants were found to be beneficial for enhancing Mn4+ luminescence, and the related mechanisms were systematically discussed.
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