Synthesis and Luminescence Properties of Yb³⁺/Ho³⁺ Co-Doped Lu₂O₃ Nanocrystalline Powders

Abstract

Yb3+ and Ho3+ co-doped Lu2O3 nanocrystalline powders were synthesized by a reversestrike co-precipitation method. The as-prepared powders were examined by the X-ray diffraction and transmission electron microscopy. The phase composition of the powders was cubic and the particle size was in the range of 30~50 nm. Emission and excitation spectra of the powders were measured by a spectrofluorometer and the possible upconversion luminescence mechanism was also discussed.

Спектры комбинационного рассеяния света и фотолюминесценция диоксида гафния, допированного катионами Ho, Er, Tm, Yb, Lu и Y

“…Такие спектры изучались при помещении катионов в кристаллические матрицы фторидов кальция [56] и лантана [57], а также в водных растворах [58]. Для оксидных матриц чаще всего изучают растворы катионов в матрице оксида иттрия [59][60][61][62] или лютеция [63][64][65]. Особо удобным объектом является катион иттербия, так как для него характерна только одна линия [56][57][58].…”

Raman and Photoluminescence Spectra for Ho, Er, Tm, Yb, Lu, and Y doped Hafnia

“…Such spectra were studied when cations were placed in the crystal matrices of calcium fluorides [56] and lanthanum [57], as well as in aqueous solutions [58]. For oxide matrices, solutions of cations in the matrix of yttrium oxide [59][60][61][62] or lutetium [63][64][65] are most often studied. A particularly convenient object is the ytterbium cation, since it is characterized by only one line [56][57][58].…”