Optical spectroscopy of nanocrystalline Gd3Ga5O12 doped with Eu3+ and high pressures

Pressure Effects on the Optical Properties of LuVO₄:Eu³⁺ Nanoparticles

“…Pressure dependence for a line position at bout 619 nm in LuVO 4 : Eu 3+ nanoparticles we have described using the Equation (22) from literature data [24] which obtained good agreement between experimental and theoretical predicted values for RE doped nanoparitcle [6,13,25]. The procedure was described in details in literature data [6,13].…”

“…The procedure was described in details in literature data [6,13]. So pressure dependence of the line position is described with: …”

“…B 0 and B 0` are the isothermal bulk modules and its derive with respect to the pressure where taken from literature [6]. Discrepancy between calculated W using equation (1) [26].…”

“…We assumed that effect of high pressure on τ is not so simple as it was mentioned above. Therefore we have explanation the effect of the high pressure on fluorescence lifetime τ on strongest line in fluorescence spectra at 619 nm ( 5 D 0  7 F 2 transition) in LuVO 4 :Eu 3+ nanoparticles used the model which was successfully applied on materials doped with the Eu 3+ ion [6,13] and other RE ion [17] and other ions [28]. We want to point out main reason for using mentioned model is the excellent agreement between experimental and theoretically predicted obtained fluorescence lifetime τ with discrepancy less than 2% in all considered pressure range.…”

“…Also, it can be found in literature that the optical properties of nanostructures are highly structure-dependent [6]. On the other hand, there are not many data available on the fluorescence of nanoparticle properties under high pressure.…”