Facile synthesis and luminescence properties of monodisperse lutetium oxide nanostructures with adjustable particle sizes. Issue 36 (25th August 2021)

• Record Type: Journal Article
• Authors: Tang, Jie; Zhang, Cuimiao; Lou, Xiaomeng; Yu, Ziman; Jia, Xiaomeng; Jia, Guang
• Is Part Of: CrystEngComm. Volume 23:Issue 36(2021)
• Page Start: 6388
• Page End: 6399
• Publication Date: 2021-08-25
• Subjects: Crystals -- Periodicals; Crystal growth -- Periodicals; Crystallography -- Periodicals; Cristaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Cristallographie -- Périodiques; 548
• DOI: 10.1039/d1ce00702e
• Languages: English
• ISSNs: 1466-8033

Abstract

Abstract : A variety of spherical lutetium compounds with narrow size distribution and adjustable diameters have been synthesized. The as-obtained Ln 3+ doped phosphors and LED devices exhibit characteristic DC or UC emissions corresponding to the Ln 3+ ions. 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 Lu2 O3 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 Lu2 O3 spheres with various diameters. The diameters of the spherical Lu(OH)CO3 and Lu2 O3 samples decrease gradually with increase of the volume ratio of EG or ethanol in solvent. By doping an appropriate amount of lanthanide activator ions (Ln 3+ ) into the resulting Lu(OH)CO3 and Lu2 O3 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 Ln 3+ ions, indicating the potential of the luminescent materials for LEDs and optoelectronic devices.