Size and shape-tailored hydrothermal synthesis and characterization of nanocrystalline LaPO4:Eu3+ phosphor

Ray, Sudeshna; Nair, Govind B.; Tadge, Prachi; Malvia, Nidhi; Rajput, Vinita; Chopra, Vibha; Dhoble, S.J.

doi:10.1016/j.jlumin.2017.10.015

Cited by 22 publications

(10 citation statements)

References 47 publications

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“…The red phosphor 6LaPO 4 –3La 7 P 3 O 18 –2La 3 PO 7 :5% (mol)Eu 3+ had the strongest emission at 615 nm. Because emission intensities of 5 D 0 → 7 F 1 and 5 D 0 → 7 F 2 transitions differed, the sample showed different colours that were closely related to lattice type sites of Eu 3+ ions . Therefore the transition 5 D 0 → 7 F 1 would be dominant when Eu 3+ ion occupied the lattice site with an inversion centre, and the sample would emit orange luminescence.…”

Section: Resultsmentioning

confidence: 96%

“…Because emission intensities of 5 D 0 → 7 F 1 and 5 D 0 → 7 F 2 transitions differed, the sample showed different colours that were closely related to lattice type sites of Eu 3+ ions . Therefore the transition 5 D 0 → 7 F 1 would be dominant when Eu 3+ ion occupied the lattice site with an inversion centre, and the sample would emit orange luminescence. Transition 5 D 0 → 7 F 2 would be dominant when Eu 3+ occupied the lattice site without an inversion centre and the sample would emit red light.…”

Section: Resultsmentioning

confidence: 99%

“…Orthophosphates have charge stability, excellent thermal stability, high chemical stability, and other excellent properties, so they have become important matrix materials. Great attention has been paid to Eu 3+ ‐doped phosphates and many investigations on these materials have been carried out . For example, Zhang et al .…”

Section: Introductionmentioning

confidence: 99%

“…how to produce red emission intensity ( 5 D 0 → 7 F 2 ) from UV and visible light excitation radiation. Reports describing LaPO 4 :Eu 3+ and La 3 PO 7 :Eu 3+ phosphors are common, however reports describing 6LaPO 4 –3La 3 PO 7 –2La 7 P 3 O 18 :Eu 3+ phosphors are not. In the present study, 6LaPO 4 –3La 3 PO 7 –2La 7 P 3 O 18 :Eu 3+ novel phosphors were synthesized successfully using co‐deposition and high‐temperature solid‐state reactions and these materials were investigated in detail.…”

Section: Introductionmentioning

confidence: 99%

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Luminescence properties of a novel red phosphor 6LaPO₄–3La₃PO₇–2La₇P₃O₁₈:Eu³⁺

Wang

2019

Luminescence

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Eu 3+ -doped 6LaPO 4 -3La 3 PO 7 -2La 7 P 3 O 18 red luminescent phosphors were synthesized by co-deposition and high-temperature solid-state methods and its polyphase state was confirmed by X-ray diffraction analysis. Transmission electron microscopy showed the grain morphology as a mixture of rods and spheres. Luminescence properties of the phosphor were investigated and its red emission parameters were evaluated as a function of Eu 3+ concentration (3.00-6.00 mol%). Excitation spectra of 6LaPO 4 -3La 3 PO 7 -2La 7 P 3 O 18 :Eu 3+ showed strong absorption bands at 280, 395, and 466 nm, while the luminescence spectra exhibited prominent red emission peak centred at 615 nm ( 5 D 0 → 7 F 2 ) in the red region. CIE chromaticity coordinates of the 6LaPO 4 -3La 3 PO 7 -2La 7 P 3 O 18 :5%Eu 3+ phosphor were (0.668, 0.313) in the red region, and defined its potential application as a red phosphor.

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Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Luminescence properties of a novel red phosphor 6LaPO₄–3La₃PO₇–2La₇P₃O₁₈:Eu³⁺

Wang

2019

Luminescence

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“…LaPO 4 is an excellent phosphor host, exhibiting remarkable chemical and thermal stability, having a monoclinic structure, in a single crystallographic position (P 21/n group), which is available for trivalent ions [13]. Photoluminescence properties of LaPO 4 as the host material have been extensively researched in the literature [14][15][16][17][18]. Few singlecomponent white-emitting phosphors codoping Bi 3+ /Eu 3+ ions have been reported [19,20].…”

Section: Introductionmentioning

confidence: 99%

Optimization of LaPO₄:Bi³⁺ Single-Phased White-Emitting Phosphor Luminescence Properties by Li⁺/Na⁺ Doping

Deng

Zhang

2019

International Journal of Optics

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LaPO4:Bi3+ single-phased white-emitting phosphors doped with both Li+/Na+ ions were successfully prepared by a conventional solid-state reaction technique. Microstructures were analyzed by both X-ray diffraction and high-resolution scanning electron microscopy experiments. Under the excitation of 335 nm, the La0.97PO4:Bi3+0.03 phosphor showed four emission bands with maxima at 460 nm, 487 nm (blue), 530 nm (yellow), and 637 nm (red); these can be successfully combined to form pure white light in a single host lattice only by simple activator Bi3+ ion. It was found that changing the concentration of dopant (Li+, Na+ ions) did not produce a change in shape or location of the emission peaks, but the value of the emission intensity increased; this was particularly evident in the red emission, which could optimize the white light emitting performance of the phosphors. When the Na+ doping concentration was 0.02, the CIE chromaticity coordinate of phosphor La0.95PO4:Bi3+0.03, Na+0.02 was (0.3008, 0.3203), close to that of the standard white light.

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Recent developments in phosphate materials for their thermoluminescence dosimeter (TLD) applications

Mehra

Chopra²

2020

Luminescence

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The use of phosphate‐based thermoluminescence dosimeter (TLD) materials in current scenarios is presented here, particularly for the field of low dosimetry. TLD materials are currently researched for their use in for example environmental dosimetry, personal dosimetry, and medical dosimetry. There are several TLD materials available such as: sulphates, borates, fluorides, and sulphides, including some metal oxides and perovskites, which are the most used and have been widely explored. In the present scenario, new interest is being focused on the need for thermoluminescent materials for application in material science and radiation dosimetry for low‐dose dosimetry. These doped TLDs are prepared using different techniques including solid‐state reaction methods, combustion methods, wet chemical methods, and sol gel methods. Therefore, among the above stated TLDs, phosphates have opened a new door in radiation dosimetry, particularly in low‐dose dosimetry over the last few years. This paper mainly deals with a review of various phosphate‐based TLD materials and recent advancements in phosphates for TL dosimetry.

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Size and shape-tailored hydrothermal synthesis and characterization of nanocrystalline LaPO4:Eu3+ phosphor

Cited by 22 publications

References 47 publications

Luminescence properties of a novel red phosphor 6LaPO₄–3La₃PO₇–2La₇P₃O₁₈:Eu³⁺

Luminescence properties of a novel red phosphor 6LaPO₄–3La₃PO₇–2La₇P₃O₁₈:Eu³⁺

Optimization of LaPO₄:Bi³⁺ Single-Phased White-Emitting Phosphor Luminescence Properties by Li⁺/Na⁺ Doping

Recent developments in phosphate materials for their thermoluminescence dosimeter (TLD) applications

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Size and shape-tailored hydrothermal synthesis and characterization of nanocrystalline LaPO4:Eu3+ phosphor

Cited by 22 publications

References 47 publications

Luminescence properties of a novel red phosphor 6LaPO4–3La3PO7–2La7P3O18:Eu3+

Luminescence properties of a novel red phosphor 6LaPO4–3La3PO7–2La7P3O18:Eu3+

Optimization of LaPO4:Bi3+ Single-Phased White-Emitting Phosphor Luminescence Properties by Li+/Na+ Doping

Recent developments in phosphate materials for their thermoluminescence dosimeter (TLD) applications

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Luminescence properties of a novel red phosphor 6LaPO₄–3La₃PO₇–2La₇P₃O₁₈:Eu³⁺

Luminescence properties of a novel red phosphor 6LaPO₄–3La₃PO₇–2La₇P₃O₁₈:Eu³⁺

Optimization of LaPO₄:Bi³⁺ Single-Phased White-Emitting Phosphor Luminescence Properties by Li⁺/Na⁺ Doping