Facile synthesis and luminescence properties of monodisperse lutetium oxide nanostructures with adjustable particle sizes?

CrystEngComm Pub Date: 2021-08-20 DOI: 10.1039/D1CE00702E

Abstract

A variety of spherical lutetium based compounds with narrow size distribution and adjustable particle sizes have been synthesized by a novel route with ethylene glycol (EG) or ethanol as auxiliary solvent. The spherical Lu(OH)CO3 precursors with adjustable particle sizes are firstly prepared by controlling the reaction conditions. After a heat treatment in air, the Lu2O3 products inherit the perfect morphology, good dispersity and uniformity except for the rougher surfaces and shrinkage in diameters, which result in the well-defined spherical Lu2O3 spheres with various diameters. The diameters of the spherical Lu(OH)CO3 and Lu2O3 samples decrease gradually with increase of the volume ratio of EG or ethanol in solvent. By doping an appropriate amount of lanthanide activator ions (Ln3+) into the resulting Lu(OH)CO3 and Lu2O3 host, the as-synthesized luminescent materials exhibit characteristic downconversion and upconversion emissions under UV or NIR excitation. In particular, the size-dependent luminescence performance of the phosphors is studied. Moreover, the LED devices fabricated by the as-obtained luminescent materials show bright characteristic multicolor emissions of Ln3+ ions, indicating the potential of the luminescent materials for LEDs and optoelectronic devices.

Graphical abstract: Facile synthesis and luminescence properties of monodisperse lutetium oxide nanostructures with adjustable particle sizes
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