Tailoring the particle size from mycrometer to nanometer scale by using a surface modifier and their size effect on the fluorescence properties of europium doped yttria [article]

Pramod K. Sharma, Mohammad H. Jilavi, Rüdiger Nass, Helmut K. Schmidt, Universität Des Saarlandes, Universität Des Saarlandes
The concept of tailored interfaces has been applied to the synthesis of Eu O /Y O powders to achieve a narrow size distribution by using a modi"er. It was found that the particle size gradually decreased from 6 m to 10 nm with an increase in concentration of the modi"er from 0 to 10 wt% with respect to Eu O /Y O . Fluorescence spectra of the sample containing 10 wt% of surface modi"er showed approximately a 5-fold enhancement of emission intensity of the D PF transition of Eu>. This transition
more » ... s the characteristic transition of europium for red #uorescence under UV light excitation. The concentration dependence of #uorescence in the range from 0}5 mol% Eu O did not reveal any concentration quenching.
doi:10.22028/d291-24642 fatcat:qlc2qjrgbzehpbanvp42w4f554