Two mechanisms of 1D2 fluorescence quenching of Pr3+‐doped Y2SiO5 crystal

Malyukin, Yu. V.; Masalov, A. A.; Zhmurin, P.N.; Znamenskii, N. V.; Petrenko, E. A.; Yukina, T. G.

doi:10.1002/pssb.200301902

Cited by 31 publications

(35 citation statements)

References 15 publications

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“…3b). It should be noted that in the bulk Y 2 SiO 5 :Pr 3+ crystal the ordered stage was not observed at the Pr concentrations up to 1.8 at% [23,25]. Thus, the appearance of the ordered stage at low Pr concentrations is the significant feature of luminescence quenching in Y 2 SiO 5 :Pr 3+ nanocrystals as compared to the macroscopic crystals.…”

Section: Resultsmentioning

confidence: 84%

“…In samples with the low Pr concentration (0.01-0.1 at%) the decay curves are well fitted by the single exponential law. The decay time is about 110 µs and is the same as for the bulk Y 2 SiO 5 :Pr 3+ crystal [23,25]. As the Pr concentration increases up to 0.5 at%, the 1 D 2 luminescence decay of the Pr(I) optical centers becomes non-exponential.…”

Section: Resultsmentioning

confidence: 91%

“…Figure 5a shows that for the dipole-quadrupole interaction the approximation result looks better. However, similar to the crystals [23], the best fitting was achieved by the time dependence 0.41 t (Fig. 5a, b).…”

mentioning

confidence: 68%

“…For the total Pr concentration of 1 at%, there are about 1.4% of the Pr(I) pairs. In a case of a non-equivalent neighbour, this part is even smaller, as ions are located in nonequivalent cationic sites in the ratio 5:1 [23,25].…”

Section: Resultsmentioning

confidence: 96%

“…In our previous paper [23], two mechanisms of [24]. The nanocrystals were annealed at 1100 °C in the air atmosphere during 5 hours.…”

Section: Introductionmentioning

confidence: 99%

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Strong quenching of Y₂SiO₅:Pr³⁺ nanocrystal luminescence by praseodymium nonuniform distribution

Zhmurin

Znamenskii

Yukina

et al. 2007

Physica Status Solidi (b)

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crystals has revealed that the concentration threshold of luminescence quenching is strikingly low for nanocrystals. In this case the ordered stage in the 1 D 2 luminescence decay has been observed at anomalously low Pr concentration (0.5 at%). This effect is caused by the preferred Pr accumulation at the nanocrystal periphery that provides the relaxation of elastic tension arising due to the difference of ionic radii of Pr 3+ and Y 3+. The temporal behavior of the 1 D 2 luminescence decay in the disordered stage shows that the concentration quenching is caused by the cooperative cross-relaxation.

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Section: Resultsmentioning

confidence: 84%

Section: Resultsmentioning

confidence: 91%

mentioning

confidence: 68%

Section: Resultsmentioning

confidence: 96%

“…In our previous paper [23], two mechanisms of [24]. The nanocrystals were annealed at 1100 °C in the air atmosphere during 5 hours.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Strong quenching of Y₂SiO₅:Pr³⁺ nanocrystal luminescence by praseodymium nonuniform distribution

Zhmurin

Znamenskii

Yukina

et al. 2007

Physica Status Solidi (b)

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Pr³⁺‐Based Visible‐to‐Ultraviolet Upconversion. A minireview

Li,

Zi,

Yang

et al. 2024

Advanced Physics Research

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Optical upconversion materials doped with lanthanides, such as Yb3+‐Er3+, Yb3+‐Ho3+, and Yb3+‐Tm3+ coped systems, have been intensively studied over the past two decades because they can convert long‐wavelength and low‐energy near‐infrared photons into short‐wavelength and high‐energy visible and UV light. Compared to these double‐doped systems, Pr3+‐doped inorganic materials are gradually gaining popularity and are expected to become a new hotspot in the field of upconversion materials research. However, comprehensive reviews of this issue are scarce. In this minireview, the basic characteristics of transitions of Pr3+ are briefly introduced. Next, it concentrates on strategies that have been explored for regulating the visible‐to‐UV upconversion efficiency. Subsequently, the potential applications of Pr3+‐doped visible‐to‐UV upconversion materials are summarized. Finally, the existing challenges and development trends are highlighted for Pr3+‐based visible‐to‐UV upconversion.

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Study of the atomic dynamics of nanoclusters Y₂SiO₅:Pr³⁺by the confocal fluorescent microscopy

Malyukin

Zhmurin

Syrkin

et al. 2004

phys. stat. sol. (c)

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The system under consideration consists of a Pr 3+ ion placed into a nanodimensional Y 2 SiO 5 crystal (∼20 nm), which rests on a glass substrate. The spectrum and attenuation of the fluorescence of the Pr 3+ ion have been studied by the method of confocal fluorescent microscopy. The rapid electron relaxation in Jmultiplets of rare earth impurity ions split by the crystal field (for a usual bulk crystal τ∼10 -9 -10 -12 sec) is shown to be suppressed in the nanodimensional crystal of Y 2 SiO 5 :Pr 1 Introduction Nano-scale clusters and the effect of cluster size on their electron and phonon spectra have been attracting a lot of attention in recent years. Compared to the bulk, quasi-particle excitation spectra in cluster systems are substantially modified. First, this modification suggests a noticeable increase of the number of low-frequency vibrations due to the high number of broken interatomic and intermolecular bonds, i.e., due to a large contribution of "vacant" cluster bonds (surfaces, edges, vertices). For clusters of less than 5-3×10 3 particles (atoms or molecules) this contribution is much larger than the ordinary surface contribution that is inversely proportional to the characteristic cluster size d [1]. Note that the vibrations with frequencies smaller than 2πv/d (v is the average sound velocity) are essentially localized and cannot propagate like ordinary plane acoustic waves. Strictly speaking, the quanta of atomic vibrations in such systems cannot be called phonons in conventional sense of this term. Therefore, we have to investigate these vibrations using methods that are different from conventional methods designed to describe phonon spectra.Vibrational properties of nanocrystal objects have been extensively studied using spectral characteristics of rare earth ions doped in such objects [2][3][4][5][6]. The relaxation rate of

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Two mechanisms of ¹D₂ fluorescence quenching of Pr³⁺‐doped Y₂SiO₅ crystal

Cited by 31 publications

References 15 publications

Strong quenching of Y₂SiO₅:Pr³⁺ nanocrystal luminescence by praseodymium nonuniform distribution

Strong quenching of Y₂SiO₅:Pr³⁺ nanocrystal luminescence by praseodymium nonuniform distribution

Pr³⁺‐Based Visible‐to‐Ultraviolet Upconversion. A minireview

Study of the atomic dynamics of nanoclusters Y₂SiO₅:Pr³⁺by the confocal fluorescent microscopy

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Two mechanisms of 1D2 fluorescence quenching of Pr3+‐doped Y2SiO5 crystal

Cited by 31 publications

References 15 publications

Strong quenching of Y2SiO5:Pr3+ nanocrystal luminescence by praseodymium nonuniform distribution

Strong quenching of Y2SiO5:Pr3+ nanocrystal luminescence by praseodymium nonuniform distribution

Pr3+‐Based Visible‐to‐Ultraviolet Upconversion. A minireview

Study of the atomic dynamics of nanoclusters Y2SiO5:Pr3+by the confocal fluorescent microscopy

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Two mechanisms of ¹D₂ fluorescence quenching of Pr³⁺‐doped Y₂SiO₅ crystal

Strong quenching of Y₂SiO₅:Pr³⁺ nanocrystal luminescence by praseodymium nonuniform distribution

Strong quenching of Y₂SiO₅:Pr³⁺ nanocrystal luminescence by praseodymium nonuniform distribution

Pr³⁺‐Based Visible‐to‐Ultraviolet Upconversion. A minireview

Study of the atomic dynamics of nanoclusters Y₂SiO₅:Pr³⁺by the confocal fluorescent microscopy