Novel rare earth activator ions-doped perovskite-type La4Ti3O12 phosphors: Facile synthesis, structure, multicolor emissions, and potential applications

Wang, Guojing; Jia, Guang; Wang, Jianru; Kong, Hanxiao; Lu, Yaxian; Zhang, Cuimiao

doi:10.1016/j.jallcom.2021.160217

Cited by 18 publications

(4 citation statements)

References 41 publications

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“…The FTIR spectrum shows three obvious absorption bands: the Ti-O-La group vibration at 446 cm À1 , the stretching vibrations of La-O bonds, and Ti-O bonding in distorted TiO 6 octahedral at 553 and 587 cm À1 , respectively. [9,17,[20][21][22] In addition, these findings indicate that, in agreement with the XRD findings, forms the La 4 Ti 9 O 24 structure.…”

Section: Resultssupporting

confidence: 88%

“…As is well known, Eu 3þ ions have been widely used among some compound hosts, including aluminate, silicate, zeolite, titanate, fluoride, and so on. [10,16,17] In particular, Eu 3þ ions activated titanate luminescent materials are considered to be promising phosphors and exhibit fascinating luminescence performance due to their unique crystal structure, such as La 4 Ti 9 O 24 reported by Morris et al [9,18] The complex network of La 4 Ti 9 O 24 's distorted, octahedral-coordinated titanium sharing corners or edges is linked by two six-coordinated and one eight-coordinated lanthanum ions. [19] Moreover, the optical and electric properties of La 4 Ti 9 O 24 could be significantly modified via cation substitution for La 3þ sites in the lattices.…”

Section: Introductionmentioning

confidence: 99%

“…It is well known that the rare‐earth‐based luminescent materials exhibit various advantages such as sharp emission lines, high brightness, high color purity, high chemical stability, and excellent eco‐friendliness. [ 8–10 ] Especially, Eu 3+ ‐activated luminescent materials have been acquired effectively and used in numerous ways. Mostly, the principal function of Eu 3+ ions, which originated from 5 D 0 → 7 F J ( J = 1, 2, 3, 4, and 5) transitions, is as a red‐emitting activator.…”

Section: Introductionmentioning

confidence: 99%

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A Red‐Emitting La₄Ti₉O₂₄:Eu³⁺ Phosphor Excited by Multi‐Wavelength for Healthy Lighting

Zhu

et al. 2023

Physica Status Solidi (a)

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Herein, an excellent red‐emitting La4Ti9O24:Eu3+ phosphor is produced using eco‐friendly hydrothermal and heat treatment techniques without a high‐temperature and multiple‐sintering process. The phosphor can be excited by multiwavelength light from 382 to 533 nm, and the three main characteristic emission peaks of Eu3+ ions are located at 592, 616, and 709 nm. Its decay time measured at 616 nm is calculated to be 3.32 ms. The color coordinates of La4Ti9O24:Eu3+ phosphor excited by 393 nm ultraviolet (UV) light are (0.665, 0.335), which are near to the Commission International de L'Eclairage (CIE) of red light (0.67, 0.33). A red light‐emitting diode was fabricated by the red‐emitting La4Ti9O24:Eu3+ phosphor encapsulating on a UV‐emitting chip (λ = 395 nm), eliminating the harmful effects of blue light on human eyes. Consequently, it would be a viable source of healthy illumination for display and lighting.

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Section: Resultssupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Red‐Emitting La₄Ti₉O₂₄:Eu³⁺ Phosphor Excited by Multi‐Wavelength for Healthy Lighting

Zhu

et al. 2023

Physica Status Solidi (a)

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“…Zhang et al [ 24 ] studied a large variety of novel rare earth-doped (Dy 3+ , Eu 3+ , Sm 3+ , Tb 3+ , Yb 3+ /Er 3+ , Yb 3+ /Tm 3+ , and Yb 3+ /Ho 3+ ) La 4 Ti 3 O 12 perovskite-like structures. The as-synthesized phosphors exhibit characteristic down-conversion (DC) or up-conversion (UC) emissions corresponding to the rare earth activator ions upon UV or NIR excitation.…”

Section: Synthesis Of Perovskitesmentioning

confidence: 99%

Review on Sol-Gel Synthesis of Perovskite and Oxide Nanomaterials

Navas

Fuentes

Castro‐Alvarez

et al. 2021

Gels

149

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Sol-Gel is a low cost, well-established and flexible synthetic route to produce a wide range of micro- and nanostructures. Small variations in pH, temperature, precursors, time, pressure, atmosphere, among others, can lead to a wide family of compounds that share the same molecular structures. In this work, we present a general review of the synthesis of LaMnO3, SrTiO3, BaTiO3 perovskites and zinc vanadium oxides nanostructures based on Sol-Gel method. We discuss how small changes in the parameters of the synthesis can modify the morphology, shape, size, homogeneity, aggregation, among others, of the products. We also discuss the different precursors, solvents, working temperature, reaction times used throughout the synthesis. In the last section, we present novel uses of Sol-Gel with organic materials with emphasis on carbon-based compounds. All with a perspective to improve the method for future applications in different technological fields.

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Synthesis Strategies for Rare Earth Activated Inorganic Phosphors: A Mini Review

Singh,

Siwach

et al. 2024

Applied Research

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Rare‐earth (RE)‐activated inorganic nanophosphors have garnered significant attention due to their unique optical properties and versatile applications in fields ranging from lighting and displays to biomedical imaging. The mini review provides a concise overview of recent advances in the synthesis strategies employed for the fabrication of these nanomaterials. Various synthesis techniques, including solid‐state, sol‐gel, solution combustion, hydrothermal, co‐precipitation, and microwave methods have been discussed, highlighting their advantages and limitations in tailoring the properties of nanophosphors. Furthermore, the role of different rare earth dopants and host matrices in controlling the luminescent properties of nanophosphors has been explored. Future perspectives and emerging trends in preparation of RE‐activated inorganic nanophosphors has also been discussed, with an emphasis on addressing current challenges and exploring new avenues for the fabrication of adequate and functional nanomaterials.

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Novel rare earth activator ions-doped perovskite-type La4Ti3O12 phosphors: Facile synthesis, structure, multicolor emissions, and potential applications

Cited by 18 publications

References 41 publications

A Red‐Emitting La₄Ti₉O₂₄:Eu³⁺ Phosphor Excited by Multi‐Wavelength for Healthy Lighting

A Red‐Emitting La₄Ti₉O₂₄:Eu³⁺ Phosphor Excited by Multi‐Wavelength for Healthy Lighting

Review on Sol-Gel Synthesis of Perovskite and Oxide Nanomaterials

Synthesis Strategies for Rare Earth Activated Inorganic Phosphors: A Mini Review

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Novel rare earth activator ions-doped perovskite-type La4Ti3O12 phosphors: Facile synthesis, structure, multicolor emissions, and potential applications

Cited by 18 publications

References 41 publications

A Red‐Emitting La4Ti9O24:Eu3+ Phosphor Excited by Multi‐Wavelength for Healthy Lighting

A Red‐Emitting La4Ti9O24:Eu3+ Phosphor Excited by Multi‐Wavelength for Healthy Lighting

Review on Sol-Gel Synthesis of Perovskite and Oxide Nanomaterials

Synthesis Strategies for Rare Earth Activated Inorganic Phosphors: A Mini Review

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Product

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A Red‐Emitting La₄Ti₉O₂₄:Eu³⁺ Phosphor Excited by Multi‐Wavelength for Healthy Lighting

A Red‐Emitting La₄Ti₉O₂₄:Eu³⁺ Phosphor Excited by Multi‐Wavelength for Healthy Lighting