Salas P. – TechConnect Briefs

Precipitant molar concentration effect on the upconversion emission in BaZrO3:Er,Yb nanocrystalline phosphor

Diaz-Torres L.A., Salas P., Castaño V.M., Oliva J., Angeles-Chavez C., Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, MX

Strong Blue, green, and red upconversion emission of Er3+ in sub-microcrystalline BaZrO3:(Yb3+Er3+) is observed. Powder samples were obtained by a facile hydrothermal process at 100ºC with different water to ethanol solvent ratios. The as synthesized [...]

Hydrothermal synthesis and Photoluminescent characterization of nanocrystalline BaZrO3

Diaz-Torres L.A., Salas P., Castaño V.M., Oliva J., De la Rosa E., Centro de Investigaciones en Optica A C, MX

Uniform well faceted sub-microcrystalline BaZrO3 particles have been obtained by a facile hydrothermal reaction. It is found that both morphology and photoluminescence properties depend on reaction time, complexation surfactant, solvent water to ethanol ratio, as [...]

Effects of Non-radiative energy transfer processes on the visible upconversion in ZrO2:Yb3+/Er3+ nanocrystals

Meza O., Diaz-Torres L.A., Salas P., De la Rosa E., Solis C.D., Centro de Investigaciones en Optica A C, MX

The luminescence dynamics of both near infrared (NIR) and visible (VIS) emission of Yb3+,Er3+ in nanocrystalline ZrO2 is studied. It is found that upconversion emission is dominated by back transfer processes over direct Yb to [...]