Change in structural morphology on addition of ZnO and its effect on fluorescence of Yb3+/Er3+ doped Y2O3

Dependence of the up-conversion emission of Li+ co-doped Y2O3:Er3+ films with dopant concentration

“…Frequently, in these systems, Yb 3 þ ions are incorporated to absorb IR (976-980 nm) radiation and transfer part of their energy by energy transfer (ET) and cooperative sensitization processes to lanthanide ions such as Ho 3 þ , Tb 3 þ , Pr 3 þ , Tm 3 þ , and Er 3 þ to obtain blue, green and red up-conversion (UC) emissions [4][5][6][7]. In particular, Er 3 þ ion has inter-4f level transitions in the near infrared region (NIR), which match with the 1532, 980 and 810 nm diode laser radiations [8][9][10].…”

Anomalous luminescent properties in ZnO and SrAl2O4composites

“…10 For example, there are few reports where ZnO is used as ller material in the host of ZnGa 2 O 4 , ZnAl 2 O 4 , CaAl 2 O 4 , YbF 3 and Y 2 O 3 . [11][12][13][14][15][16] Among the above hosts, the spinels like ZnGa 2 O 4 , ZnAl 2 O 4 and CaAl 2 O 4 containing a large number of intrinsic defects have been reported for improvement of catalyst and luminescent behavior. [11][12][13][14]17 Composite of spinels with TiO 2 shows enhanced luminescence intensity.…”