Spectral analysis of new-wavelength transitions originated from 1D2 level of Pr:YLF crystal

Wu, Peng; Xiao, Bo; Feng, Q. C.; Lin, Xiuji; Li, Wensong; Xu, Huiying; Caï, Zhiping

doi:10.1016/j.jlumin.2021.118028

Cited by 10 publications

(4 citation statements)

References 23 publications

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“…They are well-fitted using single and double exponential functions, respectively (Table ). The lifetimes in both cases decrease with increasing concentration of Pr 3+ ions due to concentration quenching; the same behavior is observed for other matrices. , …”

Section: Resultssupporting

confidence: 76%

“…The lifetimes in both cases decrease with increasing concentration of Pr 3+ ions due to concentration quenching; the same behavior is observed for other matrices. 26,27 A strong dependence of cross-relaxation (CR) processes on Pr 3+ concentration for the 1 D 2 level and much weaker for the 3 P 0 level was observed. Similar behavior was seen for many hosts doped with praseodymium ions.…”

Section: ■ Results and Discussionmentioning

confidence: 97%

“…The lifetimes in both cases decrease with increasing concentration of Pr 3+ ions due to concentration quenching; the same behavior is observed for other matrices. 26 , 27 …”

Section: Resultsmentioning

confidence: 99%

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Upconversion Luminescence Properties of Pr³⁺-Doped BaYF₅ Nanoparticles Prepared by Microwave Hydrothermal Method

Rebrova,

Zdeb,

Lemański

et al. 2024

Inorg. Chem.

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Pure and Pr 3+ -doped BaYF 5 nanoparticles were synthesized by the microwave hydrothermal method. The nanoparticles were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and optical spectroscopy. The XRD and TEM confirm that the average size of nanoparticles is in the range of 26−37 nm. The optical excitation and luminescence spectra of BaYF 5 :Pr 3+ nanoparticles are presented in the visible and ultraviolet (UV) range. It has been verified that Pr 3+ ions are capable of emitting UV-C photons when excited by a 444 nm laser. This emission arises from a two-photon energytransfer upconversion mechanism. The concentration dependence of the upconversion luminescence of BaYF 5 :Pr 3+ was studied.

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Section: Resultssupporting

confidence: 76%

Section: ■ Results and Discussionmentioning

confidence: 97%

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Upconversion Luminescence Properties of Pr³⁺-Doped BaYF₅ Nanoparticles Prepared by Microwave Hydrothermal Method

Rebrova,

Zdeb,

Lemański

et al. 2024

Inorg. Chem.

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show abstract

“…The levels involved in cross-relaxation, 1 G 4 and 3 H 6 , are known to exhibit lifetimes in the range of several milliseconds. [50][51][52] Since these lifetimes exceed the simulation window of 300 μs by around one order of magnitude, we consider the energy trapped in these levels during the further simulation. Respective ions are excluded from interaction with other ions or the surrounding medium.…”

Section: Monte Carlo Simulationmentioning

confidence: 99%

Predicting the Excitation Dynamics in Lanthanide Nanoparticles

Spelthann

Thiem

Melchert

et al. 2023

Advanced Optical Materials

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With their dipole-forbidden 4f transitions, lanthanides doped in nanoparticles promise high excited state lifetimes and quantum yields that are required for applications such as composite lasers or nanoscale quantum memories. Quenching at the nanoparticle surface, however, severely reduces the lifetime and quantum yield and requires resource-consuming experimental optimization that could not be replaced by simulations due to the limitations of existing approaches until now. Here, a versatile approach is presented that fully accounts for spatiotemporal dynamics and reliably predicts the lifetimes and quantum yields of lanthanide nanoparticles. LiYF 4 :Pr 3+ nanoparticles are synthesized as a model system, and the lifetimes of a concentration series (≈10 nm, 0.7−1.47 at%) are used to match the model parameters to the experimental conditions. Employing these parameters, the lifetimes and quantum yields of a size series (≈5 at%, 12−21 nm) are predicted with a maximum uncertainty of 12.6%. To demonstrate the potential of the model, a neutral shell is added around the core particles in the model which extends the lifetime by up to 44%. Furthermore, spatiotemporal analysis of single nanoparticles points toward a new type of energy trapping in lanthanide nanoparticles. Consequently, the numerical optimization brings applications such as efficient nanoparticle lasers or quantum memories within reach.

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Emission enhancement in the luminescence performance of warm red light‐emitting LiSrVO₄:Pr³⁺ phosphors

Mala,

Albert,

Princy

et al. 2024

Luminescence

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Warm red‐emitting praseodymium‐doped LiSrVO4 phosphors were synthesized via solid‐state reaction. The phase formation was verified using an X‐ray diffraction study and the morphology was investigated using a scanning electron microscope study. The LiSrVO4:Pr3+ phosphors emitted red light when exposed to ultraviolet light, indicating their possibility for use in warm white light‐emitting diodes (WLEDs). Furthermore, the effect of charge compensators on the luminescence characteristics was addressed. The decay time was investigated using time‐resolved photoluminescence. Furthermore, thermal quenching was analyzed through temperature‐dependent photoluminescence spectra. Their sensitivity was calculated using temperature‐dependent decay time analysis. The colour purity of the emitted light could be measured by photometric analysis. This comprehensive investigation provides a thorough understanding of the luminescence properties of phosphors for WLED applications.

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Spectral analysis of new-wavelength transitions originated from 1D2 level of Pr:YLF crystal

Cited by 10 publications

References 23 publications

Upconversion Luminescence Properties of Pr³⁺-Doped BaYF₅ Nanoparticles Prepared by Microwave Hydrothermal Method

Upconversion Luminescence Properties of Pr³⁺-Doped BaYF₅ Nanoparticles Prepared by Microwave Hydrothermal Method

Predicting the Excitation Dynamics in Lanthanide Nanoparticles

Emission enhancement in the luminescence performance of warm red light‐emitting LiSrVO₄:Pr³⁺ phosphors

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Spectral analysis of new-wavelength transitions originated from 1D2 level of Pr:YLF crystal

Cited by 10 publications

References 23 publications

Upconversion Luminescence Properties of Pr3+-Doped BaYF5 Nanoparticles Prepared by Microwave Hydrothermal Method

Upconversion Luminescence Properties of Pr3+-Doped BaYF5 Nanoparticles Prepared by Microwave Hydrothermal Method

Predicting the Excitation Dynamics in Lanthanide Nanoparticles

Emission enhancement in the luminescence performance of warm red light‐emitting LiSrVO4:Pr3+ phosphors

Contact Info

Product

Resources

About

Upconversion Luminescence Properties of Pr³⁺-Doped BaYF₅ Nanoparticles Prepared by Microwave Hydrothermal Method

Upconversion Luminescence Properties of Pr³⁺-Doped BaYF₅ Nanoparticles Prepared by Microwave Hydrothermal Method

Emission enhancement in the luminescence performance of warm red light‐emitting LiSrVO₄:Pr³⁺ phosphors