光致发光
电子顺磁共振
发光
兴奋剂
锰
材料科学
分析化学(期刊)
光谱学
离子
顺磁性
光致发光激发
微晶
结晶学
化学
核磁共振
物理
凝聚态物理
光电子学
有机化学
色谱法
量子力学
冶金
作者
Meldra Ķemere,Andris Antuzevičš,Pavels Rodionovs,U. Rogulis,Anatolijs Šarakovskis
标识
DOI:10.1016/j.optmat.2022.112352
摘要
Manganese doped polycrystalline CaAl4O7 samples with doping concentrations in 0.1–2.0 mol% range were synthesized using the solid-state synthesis method. Photoluminescence (PL) and electron paramagnetic resonance (EPR) spectroscopy techniques were applied to characterize the local structure and properties of Mn ions in CaAl4O7. With excitation of 406 nm, Mn2+ exhibited a wide emission band centered at 572 nm with luminescence decay time 6.5–8.3 ms. The results of EPR and X-ray diffraction (XRD) analyses evidenced preferential incorporation of Mn2+ in the seven-fold coordinated site of Ca2+.
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