2004
DOI: 10.1016/j.jallcom.2004.03.012
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The size-effect on luminescence properties of BaTiO3:Eu3+ nanocrystallites prepared by the sol–gel method

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Cited by 84 publications
(57 citation statements)
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“…In nanocrystalline SrTiO 3 :Eu 3+ only the spectral lines of dominant a1 Eu 3+ centers (studied in the bulk in [4]) could be identified. For nanocrystalline sol-gel produced BaTiO 3 :Eu 3+ similar spectra were observed in [8].…”
supporting
confidence: 74%
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“…In nanocrystalline SrTiO 3 :Eu 3+ only the spectral lines of dominant a1 Eu 3+ centers (studied in the bulk in [4]) could be identified. For nanocrystalline sol-gel produced BaTiO 3 :Eu 3+ similar spectra were observed in [8].…”
supporting
confidence: 74%
“…An important difference between fluorescence spectra of two nanocrystalline materials is the absence of The spectrum of BaTiO 3 :Eu 3+ samples annealed at 900 o C contains an additional strong line at 596.5 nm (observed in [8]) possessing significantly longer lifetime (2.5 ms) compared to the 0.55 ms lifetime of the "regular" BaTiO 3 :Eu 3+ fluorescence lines which in nanocrystalline samples are identical to that of the bulk BaTiO 3 :Eu 3+ [7]. In order to reveal the spectrum of optical centers responsible for this line the time-resolved fluorescence spectra were measured -see Fig.…”
mentioning
confidence: 99%
“…nanoparticles covered with silica instead of individual nanoparticles coated with silica, as demonstrated by Liu et al [26]. An increase in luminescence along with an increase in size has been observed by Hreniak et al [28]. Moreover, the increase in luminescence could be provoked by an increase in the amount of O 2-ions, which would be supplied by the gel of silica.…”
Section: Photoluminescence Characterization Of Batio 3 : Eu 3? Nanopamentioning
confidence: 86%
“…This property is particularly useful for studies of Eu 3+ doped nanomaterials [15]. Also based on the Eu 3+ luminescence, Judd-Ofelt intensity parameters can be useful information for investigations of size effects [16]. These parameters varied with the crystal field environment in nanoscale materials [17].…”
Section: Introductionmentioning
confidence: 99%