CaSn(OH)6 hydroxides, CaSnO3 oxides and CaSnF6 fluorides: synthesis and structural filiation. Cationic environment impact on Pr3+ doped compounds luminescence

Manuel Gaudon (1) , Guillaume Salek (1) , Malang Kande (1) , Ines Andron (1) , Christine Frayret (2) , Etienne Durand (1) , Nicolas Penin (1) , Mathieu Duttine (1) , Alain Wattiaux (1) , Veronique Jubera (1)

1 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux
2 LRCS - Laboratoire réactivité et chimie des solides - UMR CNRS 7314

CaSn(OH)6, CaSnO3 and CaSnF6 compounds were elaborated from a “one-batch” synthesis route: the coprecipitation of the pure double hydroxide leads to pure double oxide or fluoride after annealing treatments under air or HF as anhydrous gas, respectively. Structural and morphological features of the three matrices were carefully investigated by X Ray Diffraction analysis and Scanning Electron Microscopy, respectively. In addition, the luminescent properties of the Pr-doped compounds were performed and compared. The nanometric size of the double hydroxide inhibits the luminescence. The interpretation of the emission spectra obtained for Pr-doped CaSnO3 and CaSnF6 compounds is based on the covalence/ionic balance of the M–O or M–F bonds.

Mots clés: Praseodymium; Crystal field; Luminescence; Nephelauxetic effect; Stannate; Praseodymium; Crystal field; Luminescence; Nephelauxetic effect

Domaines: Matériaux

Manuel Gaudon, Guillaume Salek, Malang Kande, Ines Andron, Christine Frayret, et al.. CaSn(OH)6 hydroxides, CaSnO3 oxides and CaSnF6 fluorides: synthesis and structural filiation. Cationic environment impact on Pr3+ doped compounds luminescence. Journal of Solid State Chemistry, 2018, 265, pp.291-298. ⟨10.1016/j.jssc.2018.06.017⟩. ⟨hal-01828365⟩