荧光粉
八面体
离子
发光
宽带
镱
材料科学
敏化
能量转移
吸收(声学)
化学
分析化学(期刊)
兴奋剂
物理
光电子学
光学
分子物理学
复合材料
有机化学
生物
免疫学
色谱法
作者
Yajie Li,Long Cheng,Min Liu,Weiping Gong,Zhenting Zhao,Jinxiang Song,Weidong Tang,Renping Cao
标识
DOI:10.1016/j.saa.2020.118085
摘要
Yb3+ 1000 nm and Er3+ 1536 nm emission can be efficiently sensitized by broadband absorption of Cr3+ in almost the whole visible region in La3Ga5.5Nb0.5O14(LGNO): Cr3+, Ln3+ (Ln = Yb, Er) phosphor. Between the two kinds of Cr3+ sites, tetrahedral Cr(II) mainly behaves as the broadband sensitizer for Er3+ or Yb3+. Meanwhile octahedral Cr(I) may energy transfer (ET) to Cr(II), thereby influences the luminescence decay of Cr(II) as increasing Er3+ or Yb3+ content. This kind of site-related broadband sensitization may propose a strategy of designing tunable ET process between transition metal ions and rare earth ions.
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