La(1-x)Ln(x)H(O3PCH3)(2) (Ln = Tb, Eu; 0   x  = 1): an organic-inorganic hybrid with lanthanide chains and tunable luminescence properties

Mutelet B.; Boudin S.; Perez O.; Rueff J. M.; Labbe C.; Jaffres P. A.

首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >La(1-x)Ln(x)H(O3PCH3)(2) (Ln = Tb, Eu; 0 x = 1): an organic-inorganic hybrid with lanthanide chains and tunable luminescence properties

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La(1-x)Ln(x)H(O3PCH3)(2) (Ln = Tb, Eu; 0 x = 1): an organic-inorganic hybrid with lanthanide chains and tunable luminescence properties

机译：La（1-x）Ln（x）H（O3PCH3）（2）（Ln = Tb，Eu; 0 展开▼

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The organic/inorganic La(1-x)Ln(x)H(O3PCH3)(2) (Ln = Eu, Tb) hybrids have been synthesized by hydrothermal synthesis. The crystal structure of LaH(O3PCH3)(2) consists of chains of edge-sharing LaO8 polyhedra linked through PO3C tetrahedra. Photoluminescence of Eu3+, Tb3+ and Eu3+/Tb3+ co-doped materials have been investigated. The Eu and Tb hybrids show no concentration quenching versus doping rate suggesting energy migration through a percolation model. The Eu hybrids exhibit a red emission while the Tb ones exhibit, with the Tb rate increasing, a blue to green emission under a 378 nm excitation wavelength and a cyan to green emission under a 262 nm excitation wavelength. The doping rate dependent red shift results from a cross relaxation phenomenon between closed Tb3+ ions. The blue to cyan shift observed for the slightly doped materials, when excitation wavelength shifts from 378 nm to 262 nm, is due to different relaxation phenomena, from the D-5(3) level for a 378 nm excitation wavelength and from the D-5(4) level via the 4f5d level for a 262 nm excitation wavelength. Under a 378 nm wavelength, the co-doped La0.93Eu0.03Tb0.04H(O3PCH3)(2) hybrid exhibits a white/cyan emission with CIE coordinates equal to x = 0.29, y = 0.37.

机译：通过水热合成法合成了有机/无机La（1-x）Ln（x）H（O3PCH3）（2）（Ln = Eu，Tb）杂化物。 LaH（O3PCH3）（2）的晶体结构由通过PO3C四面体连接的边缘共享LaO8多面体链组成。研究了Eu3 +，Tb3 +和Eu3 + / Tb3 +共掺杂材料的光致发光。 Eu和Tb杂化物没有显示出浓度猝灭与掺杂速率的关系，表明能量通过渗滤模型迁移。 Eu杂化物显示出红色发射，而Tb杂化物显示出随着Tb速率的增加，在378 nm激发波长下从蓝色到绿色发射，在262 nm激发波长下从青绿色到绿色发射。掺杂速率相关的红移是由封闭的Tb3 +离子之间的交叉弛豫现象引起的。当激发波长从378 nm转变为262 nm时，对于轻度掺杂的材料观察到的蓝光向青色位移是由于不同的弛豫现象引起的，这是由于378 nm激发波长的D-5（3）能级和D-通过262 nm激发波长的4f5d能级获得5（4）能级。在378 nm波长下，共掺杂的La0.93Eu0.03Tb0.04H（O3PCH3）（2）杂化物显示白色/青色发射，其CIE坐标等于x = 0.29，y = 0.37。

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《Dalton transactions: An international journal of inorganic chemistry》 |2015年第3期|共7页
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Mutelet B.; Boudin S.; Perez O.; Rueff J. M.; Labbe C.; Jaffres P. A.;
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La(1-x)Ln(x)H(O3PCH3)(2) (Ln = Tb, Eu; 0 x = 1): an organic-inorganic hybrid with lanthanide chains and tunable luminescence properties

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