Title :
Core/shell Y(OH)CO3:Eu3+/YBO3:Eu3+ phosphors with sphericity, submicrometre size and non-aggregation characteristics
Author :
Lihui Zhang ; Hongpeng You ; Mei Yang ; Yanhua Song
Author_Institution :
State Key Lab. of Rare Earth Resource Utilization, Chinese Acad. of Sci., Changchun, China
fDate :
8/1/2011 12:00:00 AM
Abstract :
Core/shell Y(OH)CO3:Eu3+/YBO3:Eu3+ composites with a well-defined spherical shape and narrow size distribution were fabricated through a simple hydrothermal process for the first time. Y(OH)CO3:Eu3+/YBO3:Eu3+ composites can be obtained via Y(OH)CO3:Eu3+ colloidal spheres partly reacted with H3BO3, with the morphology well-retained. Under UV excitation, the core/shell Y(OH)CO3:Eu3+/YBO3:Eu3+ phosphor emits the typical orange-colour light originating from the 5D0→7FJ transitions of the YBO3:Eu3+ shell. The spherical particles might have potential application for high resolution screens, displays and flat panels.
Keywords :
Fourier transform spectra; aggregation; colloids; europium; infrared spectra; nanocomposites; nanofabrication; nanoparticles; phosphors; photoluminescence; ultraviolet spectra; yttrium compounds; 5D0-7FJ transitions; Fourier transform infrared spectra; Y(OH)CO3:Eu-YBO3:Eu; colloidal spheres; core-shell phosphors; flat panels; high resolution displays; high resolution screens; hydrothermal process; nanocomposites; narrow size distribution; nonaggregation characteristics; orange-colour light; photoluminescence; sphericity; submicrometre size; ultraviolet excitation;
Journal_Title :
Micro & Nano Letters, IET
DOI :
10.1049/mnl.2011.0241
