Wydział Chemii

Joanna Cybińska

Małgorzata Guzik

Chantal Lorbeer

Eugeniusz Zych

Yannick Guyot

Georges Boulon

Anja-Verena Mudring

2017

Optical Materials

63

76-87

10.1016/j.optmat.2016.09.025

Naukowa

Angielski

Artykuł

Monoclinic monazite-type Nd³⁺-doped lanthanum orthophosphate (LaPO4:Nd³⁺) nanoparticles were prepared by microwave treatment of simple lanthanide precursors such as Nd(OAc)3•xH2O, OAc = acetate) with task-specific dihydrogen phosphate ionic liquids (ILs) 1-butyl-1-methylpyrrolidinium dihydrogenphosphate- BmPyrH2PO4 (IL1) and 2-hydroxyethyl-N,N,N-trimethylammonium, [choline][H2PO4] (IL2) as the reaction medium, reactant and in-situ nanoparticle stabilizer.This synthesis route possesses many advantages as it is a fast and facile preparation method of the desired phosphate nanomaterials without the necessity for post-reaction heat treatment to obtain the anhydrous high temperature monazite phosphate phase.The nano-sized phosphors Nd³⁺:LaPO4 were carefully analyzed by the powder X-ray diffraction, electron microscopy and spectroscopic techniques taking advantage of the Nd³⁺ spectroscopic probe to analyze in detail the structural properties. Applied high resolution low temperature absorption and emission techniques allowed to complete the structural information unavailable from the XRD powder patterns.A clear influence of the used task-specific dihydrogen phosphate ILs on the structure, morphology, luminescence intensity and lifetimes of the obtained Nd³⁺:LaPO4 was found. It is worth noting that the Nd³⁺ luminescence in LaPO4 has never been reported up to now.

orthophosphates, Ionic liquids assisted synthesis, neodymium doping, NIR emitting phosphors

http://dx.doi.org/10.1016/j.optmat.2016.09.025

http://www.elsevier.com