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Accueil du site > Vie du Laboratoire > Archives > Archives 2015 "A la Une" >

23 juin 2015

La1-xLnxH(O3PCH3)2 : an organic–inorganic hybrid with lanthanide chains and tunable luminescence properties

The photoluminescence of Eu3+, Tb3+ and Eu3+/Tb3+ co-doped La1-xLnxH(O3PCH3)2 (Ln=Eu,Tb) hybrids have been investigated. The crystal structure of LaH(O3PCH3)2 consists of chains of edge-sharing LaO8 polyhedra linked through PO3C tetrahedra. 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.

B. Mutelet, S. Boudin, O. Pérez, J. M. Rueff, C. Labbé and P.A. Jaffrès
Dalton Trans. 44 (2015) 1186-1192. DOI : 10.1039/C4DT02643H

Corresponding author : Sophie Boudin



Hétérostructures et Oxydes à Propriétés Electroniques (HOPE)