A novel KMgPO 4 :Tb 3+ (KMPT) phosphor for radiation dosimetry

Palan, C. B.; Bajaj, N. S.; Soni, Anuj; Omanwar, S. K.

doi:10.1016/j.jlumin.2016.03.014

Cited by 38 publications

(7 citation statements)

References 36 publications

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“…The phosphors LiSr 4 (BO 3 ) 3 doped with Pr 3+ , Gd 3+ and Gd 3+ -Pr 3+ were prepared by a modified solid-state diffusion method. Palan et al [12,13] and Bajaj et al [14] )3 ) (99.99% purity) were used for preparation of phosphors. Stoichiometric amounts of starting materials with a little amount of double distilled water were mixed thoroughly in a china basin to obtain a homogeneous solution.…”

Section: Methodsmentioning

confidence: 99%

Synthesis and photoluminescence study of narrow-band UVB-emitting LiSr4(BO3)3:Gd3+, Pr3+ phosphor

Chauhan

Bajaj²,

Omanwar

2017

Bull Mater Sci

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A series of Pr 3+ , Gd 3+ and Pr 3+-Gd 3+-doped inorganic borate phosphors LiSr 4 (BO 3) 3 were successfully synthesized by a modified solid-state diffusion method. The crystal structures and the phase purities of samples were characterized by powder X-ray diffraction. Surface morphology of the sample was studied by scanning electronic microscopy (SEM). The optimal concentrations of dopant Gd 3+ ions in compound LiSr 4 (BO 3) 3 were determined through the measurements of photoluminescence (PL) spectra of phosphors. Gd 3+-doped phosphors LiSr 4 (BO 3) 3 show strong band absorption in UV spectral region and narrow-band UVB emission under the excitation of 276 nm was only due to 6 P J → 8 S 7/2 transition of Gd 3+ ions. The effect of Pr 3+ ion on excitation of LiSr 4 (BO 3) 3 :Gd 3+ was also studied. The excitation of LiSr 4 (BO 3) 3 :Gd 3+ , Pr 3+ gives a broad-band spectra, which show very good overlap with the Hg 253.7 nm line. The photoluminescence spectra of LiSr 4 (BO 3) 3 with different doping concentrations Pr 3+ and keeping the concentration of Gd 3+ constant at 0.03 mol have also been studied. The emission intensity of LiSr 4 (BO 3) 3 :Pr 3+-Gd 3+ phosphors increases with increasing Pr 3+ doping concentration and reaches a maximum at 0.01 mol. From the photoluminescence study of LiSr 4 (BO 3) 3 :Gd 3+ , Pr 3+ we conclude that there was efficient energy transfer from Pr 3+ → Gd 3+ ions in LiSr 4−x−y Pr x Gd y (BO 3) 3 phosphors.

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Section: Methodsmentioning

confidence: 99%

Synthesis and photoluminescence study of narrow-band UVB-emitting LiSr4(BO3)3:Gd3+, Pr3+ phosphor

Chauhan

Bajaj²,

Omanwar

2017

Bull Mater Sci

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“…For phosphates, generally, ammonium dihydrogen phosphate, CaHPO 4 , are H 2 PO 4 are included as the PO 4 host source. [ 20–27 ] First, precursors are taken in the appropriate ratio and then mixed and ground to give a homogenous solid solution. This method generally involves several sintering stages at high temperatures along with intermediate grinding, because solids normally react at high temperatures to overcome the diffusion barrier and undergo the reaction, therefore it is also called the solid‐state diffusion method.…”

Section: Materials and Generally Used Synthesis Techniquesmentioning

confidence: 99%

“…This phosphor can be used 10 times and has low fading. [ 25 ] The KMgPO 4 :Mn 2+ phosphor, prepared by the SSR method, upon excitation with 416 nm radiation produced a good PL band over 550–800 nm with a peak maximum at 658 nm that underwent a red shift in its spectra. [ 63 ] These studies revealed KMgPO 4 as a good candidate for PL and TL applications.…”

Section: Some Studies On Abpo4 Type Phosphatesmentioning

confidence: 99%

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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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“…There have been some reports in which dual-mode emission in Eu 3+ is examined. 16,26,27 The lanthanide pair Yb 3+ / Tb 3+ has generally been studied in glass samples, 28,29 although very few studies have been carried out using polycrystalline-based materials 30,31 that show an efficient green colored emission.…”

Section: Introductionmentioning

confidence: 99%

Probing multimodal light emission from Tb³⁺/Yb³⁺-doped garnet nanophosphors for lighting applications

Mishra

Kumar

Gautam

et al. 2023

Phys. Chem. Chem. Phys.

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A novel KMgPO 4 :Tb 3+ (KMPT) phosphor for radiation dosimetry

Cited by 38 publications

References 36 publications

Synthesis and photoluminescence study of narrow-band UVB-emitting LiSr4(BO3)3:Gd3+, Pr3+ phosphor

Synthesis and photoluminescence study of narrow-band UVB-emitting LiSr4(BO3)3:Gd3+, Pr3+ phosphor

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

Probing multimodal light emission from Tb³⁺/Yb³⁺-doped garnet nanophosphors for lighting applications

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A novel KMgPO 4 :Tb 3+ (KMPT) phosphor for radiation dosimetry

Cited by 38 publications

References 36 publications

Synthesis and photoluminescence study of narrow-band UVB-emitting LiSr4(BO3)3:Gd3+, Pr3+ phosphor

Synthesis and photoluminescence study of narrow-band UVB-emitting LiSr4(BO3)3:Gd3+, Pr3+ phosphor

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

Probing multimodal light emission from Tb3+/Yb3+-doped garnet nanophosphors for lighting applications

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Probing multimodal light emission from Tb³⁺/Yb³⁺-doped garnet nanophosphors for lighting applications