Upconversion luminescence and optical temperature-sensing properties of LiNbO3:Yb3+/Er3+ nanoparticles

Tong, Xuan; Zhou, Xin; Tang, Xunze; Min, Yong; Li, Xiaolong; Wang, WenGuang; Qian, Yannan

doi:10.1039/d1ce01523k

Cited by 13 publications

(2 citation statements)

References 29 publications

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“…This trend in the nanomedicine field led to the preparation of nanoparticles with bimodal and trimodal capabilities thus allowing the use of different imaging techniques combining for instance high resolution (multiphoton microscopy) or high penetration depths (MRI, PET, CT, ultrasound, photoacoustic) [ 276,277 ] and the development of theranostic applications. [ 278 ] Regarding NCO nanocrystals, such an increase in multifunctionality has recently been demonstrated through simple NCO doping with rare‐earth luminescent ions, [ 62,235,279 ] advanced modification of their surface composition [ 66,67,280 ] (for the on‐demand photo‐triggered release of chemotherapeutics or for dual multiphoton and MRI contrasts) and the formation of core/shell nanostructures [ 60 ] by heterogeneous nucleation.…”

Section: Conclusion and Prospectsmentioning

confidence: 99%

Solution‐Based Synthesis Routes for the Preparation of Noncentrosymmetric 0‐D Oxide Nanocrystals with Perovskite and Nonperovskite Structures

Dantelle

Benghia

Dantec

et al. 2022

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With the miniaturization of electronic‐based devices, the foreseen potential of new optical nanoprobes and the assessment of eventual size and shape effects, elaboration of multifunctional noncentrosymmetric nanocrystals with ferroelectric, pyroelectric, piezoelectric, and nonlinear optical properties are the subject of an increasing research interest. Here, the recent achievements from the solution‐based methods (coprecipitation in homogeneous and nanostructured media, sol‐gel processes including various chemistries and hydro/solvothermal techniques) to prepare 0‐D perovskite and nonperovskite oxides in the 5–500 nm size range are critically reviewed. To cover a representative list of covalent‐ and ionic‐type materials, BaTiO3 and its derivatives, niobate compounds (i.e., K/Na/LiNbO3), multiferroic BiFeO3, and crystals of lower symmetry including KTiOPO4 and some iodate compounds such as Fe(IO3)3 and La(IO3)3 are systematically in focus. The resulting size, morphology, and aggregation state are discussed in light of the proposed formation mechanisms. Because of a higher complexity related to their chemical composition and crystalline structures, improving the rational design of these multifunctional oxides in terms of finely‐tuned compositions, crystalline hosts and structure–property relationships still need in the future a special attention of the research community to the detailed understanding of the reaction pathways and crystallization mechanisms.

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Section: Conclusion and Prospectsmentioning

confidence: 99%

Solution‐Based Synthesis Routes for the Preparation of Noncentrosymmetric 0‐D Oxide Nanocrystals with Perovskite and Nonperovskite Structures

Dantelle

Benghia

Dantec

et al. 2022

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“…Further, recent research on up-conversion luminescence of erbium and ytterbium-doped lithium niobate nanoparticles has shown temperature dependence that holds promise for applications in thermometry [7]. Moreover, the luminescent properties of praseodymium in other ferroelectric niobates also attracted attention as promising sensor materials [8][9][10][11][12]. The strong intensity of mechano-and photoluminescence was observed by authors [3] in congruent LN:Pr single crystals grown by Czochralski technique as well as in LN congruent crystals, co-doped with Pr and Mg. Further, the study of the mechanoluminescent and photoluminescent properties of LiNbO 3 :Pr and LiTaO 3 :Pr, prepared in form of micropowders using solid-phase synthesis from a mixture of the corresponding starting oxides and lithium carbonate was performed in [4].…”

Section: Introductionmentioning

confidence: 99%

Mechanosynthesis, Structure and Photoluminescent Properties of the Pr3+ Doped LiNbO3, LiNbO3:Mg, LiTaO3 Nanopowders

Sugak

Vasylechko

Sydorchuk³

et al. 2023

Powders

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In the current work, nanocrystalline powders with different compositions, namely Li0.98Pr0.02NbO3, Li0.93Pr0.02Mg0.05NbO3 and Li0.98Pr0.02TaO3 were synthesized for the first time using the method of high-energy ball milling of the starting materials (Li2CO3, Nb2O5, Ta2O5, MgO, Pr6O11), followed by high-temperature annealing. XRD data analysis confirmed the absence of parasitic phases in the obtained nanocrystalline compounds. The estimated particle sizes ranged from 20 to 80 nm. From the obtained nanopowders, ceramic samples were prepared using specially developed equipment, which allowed for pressing at elevated temperatures with a simultaneous application of a constant electric field. The obtained photoluminescence spectra exhibit characteristic features of Pr3+ ions in the crystal structure of LiNbO3 and LiTaO3 and are most efficiently excited by UV light. Samples pressed with an electric field application show higher intensity of photoluminescence. Investigations of the temperature dependence of electrical conductivity of the Li0.98Pr0.02NbO3 sample, pressed with the application of an electric field, indicate that the conductivity mechanism is similar to that of LiNbO3 single crystals and, at high temperatures, is attributed to the lithium conduction mechanism.

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Rare‐Earth Ions in LiNbO₃ Nanocrystals from the View of Spectroscopy and Force‐Field Calculations

Lengyel,

Kocsor,

Kis

et al. 2024

Physica Status Solidi (a)

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The intrinsic and extrinsic defects in LiNbO3 (LN) bulk crystals have been investigated with experimental and theoretical methods for many years. However, nowadays, scientific attention has turned to nanocrystals (e.g., for quantum nanophotonic applications). Herein, the results of spectroscopic measurements and theoretical calculations on Yb3+‐ or Er3+‐doped LN nanocrystals are presented. A series of congruent LN nanocrystals doped with Er3+ or Yb3+ have been produced by grinding process under wet conditions in a high‐energy ball mill. The effect of size reduction on the rare‐earth (RE) ions has been followed by absorption measurement of the characteristic electronic transitions using a Fourier‐transform infrared spectrometer. Out‐diffusion of the RE ions from the nano‐LN particle and the appearance of an unordered phase have been concluded from the experimental results. GULP software has been used to make force‐field calculations on a Li245Nb245O735 unit to model the nano‐LN structure containing Er3+ or Yb3+ dopants. From the calculations taking into account, one Er3+ or Yb3+ ion, their out‐diffusion, and the appearance of the ions in the unordered phase have been demonstrated, while in the double‐doped case, independent RE incorporation has been found.

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Upconversion luminescence and optical temperature-sensing properties of LiNbO₃:Yb³⁺/Er³⁺ nanoparticles

Abstract: LiNbO3:Yb3+/Er3+ nanocubes with the average diameter of approximately 500 nm were firstly applied in non-invasion optical temperature sensors. As increasing the annealing temperature, a two orders of magnitude enhancement of...

Cited by 13 publications

References 29 publications

Solution‐Based Synthesis Routes for the Preparation of Noncentrosymmetric 0‐D Oxide Nanocrystals with Perovskite and Nonperovskite Structures

Solution‐Based Synthesis Routes for the Preparation of Noncentrosymmetric 0‐D Oxide Nanocrystals with Perovskite and Nonperovskite Structures

Mechanosynthesis, Structure and Photoluminescent Properties of the Pr3+ Doped LiNbO3, LiNbO3:Mg, LiTaO3 Nanopowders

Rare‐Earth Ions in LiNbO₃ Nanocrystals from the View of Spectroscopy and Force‐Field Calculations

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Upconversion luminescence and optical temperature-sensing properties of LiNbO3:Yb3+/Er3+ nanoparticles

Abstract: LiNbO3:Yb3+/Er3+ nanocubes with the average diameter of approximately 500 nm were firstly applied in non-invasion optical temperature sensors. As increasing the annealing temperature, a two orders of magnitude enhancement of...

Cited by 13 publications

References 29 publications

Solution‐Based Synthesis Routes for the Preparation of Noncentrosymmetric 0‐D Oxide Nanocrystals with Perovskite and Nonperovskite Structures

Solution‐Based Synthesis Routes for the Preparation of Noncentrosymmetric 0‐D Oxide Nanocrystals with Perovskite and Nonperovskite Structures

Mechanosynthesis, Structure and Photoluminescent Properties of the Pr3+ Doped LiNbO3, LiNbO3:Mg, LiTaO3 Nanopowders

Rare‐Earth Ions in LiNbO3 Nanocrystals from the View of Spectroscopy and Force‐Field Calculations

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Upconversion luminescence and optical temperature-sensing properties of LiNbO₃:Yb³⁺/Er³⁺ nanoparticles

Rare‐Earth Ions in LiNbO₃ Nanocrystals from the View of Spectroscopy and Force‐Field Calculations