Concentration quenching of the Nd3+ emission in alkali rare earth borates
Concentration quenching of the Nd3+ emission in alkali rare earth borates
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DOI：
10.1016/0022-4596(83)90189-5
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发表时间：
1983-11
影响因子：
3.3
通讯作者：
J. Mascetti;C. Fouassier;P. Hagenmuller
中科院分区：
文献类型：
--
作者：
J. Mascetti;C. Fouassier;P. Hagenmuller
在M_2O → Nd_2O_3 → B_2O_3系统中发现了四种新的三元化合物，其组成分别为Li_6Nd（BO_3）_3、Na_3Nd（BO_3）_2和Na_（18）Nd（BO_3）_7。本文研究了同系镧、钆硼酸盐中钕发射的浓度猝灭。而在Li6Gd（BO3）3、Na3La2（BO3）3和Na3La（BO3）2基质晶格中，由于配位多面体由共同的面或边连接，猝灭速率与Nd 3+浓度呈二次关系，而在Na 18La（BO3）7基质晶格中，发光寿命不受Nd浓度的影响。寿命和晶体场分裂的J水平相比，其他氧化物的主机晶格。
Four new ternary compounds with compositions Li6Nd(BO3)3, Na3Nd(BO3)2, and Na18Nd(BO3)7have been found in theM2ONd2O3B2O3systems, whereMis either Li or Na. Concentration quenching of the neodymium emission in homologous lanthanum or gadolinium borates has been investigated. While in the Li6Gd(BO3)3, Na3La2(BO3)3, and Na3La(BO3)2host lattices the quenching rate shows a quadratic dependence on Nd3+concentration, as expected since the coordination polyhedra are connected by common faces or edges, in Na18La(BO3)7the luminescent lifetime is not influenced by neodymium concentration. Lifetimes and crystal field splitting of theJlevels are compared to those of other oxide host lattices.