Controllable synthesis and luminescence of YPO4:Ln3+ (Ln = Eu and Sm) nanotubes

Abstract

YPO 4 :Ln 3? (Ln = Eu and Sm) nanotubes were synthesized by a precipitation process in the presence of SDS. The XRD results showed that all samples have a xenotime type tetragonal structure, indicating that doped rare earth ions have no influence on the phase. The SEM and TEM images showed that all samples are nanotubes. On basis of the morphology of samples and the properties of SDS, the possible formation mechanism was speculated. YPO 4 :Eu 3? and YPO 4 :Sm 3? nanotubes showed characteristic emission bands of Eu 3? and Sm 3? ions, respectively. For YPO 4 :Eu 3? /Sm 3? nanotubes, the codoping Sm 3? ions can enhance the emission intensity of Eu 3? ions.

Síntesis y caracterización de silicatos de itrio codopados con Eu³⁺ y Eu²⁺ con posible aplicación a diodos emisores de luz blanca

“…En dichos estudios, se observa que el fenómeno de desactivación o apagamiento de la emisión, relacionada con la concentración del dopante, generalmente ocurre entre el 3 y el 12%. Sin embargo, los valores registrados con mayor frecuencia oscilan entre el 5 y 7% razón por la cual se eligió el valor promedio, 6% [95][96][97][98][99][100][101][102].…”