NaOH-controlled upconversion of nanocrystalline BaZrO3:Er,Yb phosphor Online publication date: Tue, 07-Jan-2014
by L.A. Diaz-Torres; P. Salas; J. Oliva; E. De la Rosa; C. Angeles-Chavez; V.M. Castaño
International Journal of Nanotechnology (IJNT), Vol. 10, No. 12, 2013
Abstract: Strong green and red upconversion emissions of Er3+ in nanocrystalline BaZrO3:Yb,Er are observed. Powder samples were obtained by a simple hydrothermal process at 100°C under different NaOH molar concentrations and annealed in air at 1000°C for 3 h. Band gap and luminescence depend on precipitant molar concentration. Faceted single-phase BaZrO3 secondary particles were obtained for precipitant concentrations of 1.0 M, whereas for other precipitant concentrations, ZrO2 segregation was observed.
Online publication date: Tue, 07-Jan-2014
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