Effect of Dy3+ doping and calcination on the luminescence of ZrO2 nanoparticles

Synthesis and photoluminescence characteristics of Dy3+-doped ZnAl2O4 nanocrystals via a combustion process

“…Thus, the yellow/blue ratio, known as the asymmetry ratio, of Dy 3+ varies while locating in different host lattices. It has been reported that in the Dy 3+ -doped ZrO 2 system, with increasing the calcining temperature, the yellow/blue ratio increases due to the change of the local site symmetry around Dy 3+ [19]. In our case, the Dy 3+ ion may enter into the host lattice to substitute Al 3+ or Zn 2+ or locate on surfaces of the nanocrystals due to the porosity of the spinel structure.…”

Combustion synthesis of Na2Sr(PO4)F:Dy3+ white light emitting phosphor

“…Dy 3+ ions, which have luminescence lines in the 470-500 nm region due to 4 F 9/2 -6 H 15/2 transition and in the 570-600 nm region due to the 4 F 9/2 -6 H 13/2 transition, have attracted much attention because of their white light emission. [8,9] Here we concentrate on preparing a phosphate-based system by a low-cast conventional combustion method. The photoluminescence (PL) emission spectrum of Dy 3+ ion in the blue, yellow and red regions of the visible spectrum under 348 nm excitation gives blue-yellow-red emissions like blue-green-red emission.…”

Labeling of HeLa cells using ZrO 2 : Yb 3 + - Er 3 + nanoparticles with upconversion emission

“…[40][41][42] The ZrO 2 low phonon energy (470 cm −1 ) increases the number and the probability of radiative transitions in rare earth doped ZrO 2 . 43 Strong UPC emission has been obtained by doping ZrO 2 with different pairs of rare earths, such as Yb 3þ -Tm 3þ , Yb-Ho 3þ , Er 3þ , and Yb 3þ -Er 3þ . 44 Furthermore, ZrO 2 nanophosphors can be synthesized by low-cost methods, such as sol-gel, 45,46 sol-emulsion-gel, 47,48 spray pyrolysis, 49,50 and precipitation.…”