Green, orange and reddish color emitting rare earth activated Ca2BO3Cl phosphor for solid state lighting applications

Panse, V. R.; Kokode, N. S.; Shukla, Alok; Yerpude, A.N.; Dhoble, S.J.

doi:10.1016/j.ijleo.2016.04.031

Cited by 11 publications

(7 citation statements)

References 13 publications

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“…25) Based on the previous works, the broad glow peak at 170 °C in the MnCl 2 -doped Ca 2 BO 3 Cl might originate from an intrinsic defect in the Ca 2 BO 3 Cl host since such a glow peak was observed in the Tb-doped Ca 2 BO 3 Cl and Eu-doped Ca 2 BO 3 Cl. 25,30) However, a glow peak at approximately 280 °C was not detected in the past studies, suggesting that unknown defects related to the peak at approximately 280 °C were formed by MnCl 2 doping.…”

Section: Resultsmentioning

confidence: 84%

“…For instance, TSL glow peaks at 110 °C and 250 °C appeared in the Dy-doped Ca 2 BO 3 Cl while a TSL glow peak was detected at around 160 °C from the Tb-doped Ca 2 BO 3 Cl. 30) In addition, Eu-doped Ca 2 BO 3 Cl showed a TSL with a glow peak at around 175 °C. 25) Based on the previous works, the broad glow peak at 170 °C in the MnCl 2 -doped Ca 2 BO 3 Cl might originate from an intrinsic defect in the Ca 2 BO 3 Cl host since such a glow peak was observed in the Tb-doped Ca 2 BO 3 Cl and Eu-doped Ca 2 BO 3 Cl.…”

Section: Resultsmentioning

confidence: 98%

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Dosimetric properties of Mn²⁺-doped Ca₂BO₃Cl

Wauke

Koide

Kawano

et al. 2022

Jpn. J. Appl. Phys.

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We synthesized Ca2BO3Cl with various amounts of MnCl2 to fabricate phosphors for radiation dosimetry. After the synthesis, we evaluated their scintillation, thermally-stimulated luminescence (TSL), and optical stimulated luminescence (OSL) characteristics. A scintillation peak derived from the 4T1→6A1 transition of Mn2+ appeared at approximately 600 nm in the MnCl2-doped Ca2BO3Cl. Further, their decay time constants were approximately 0.13 ms that should be ascribed to the 4T1→6A1 transition. Moreover, the MnCl2-doped Ca2BO3Cl exhibited TSL glow peaks at approximately 85, 170, and 280 °C. The linear response of the 0.1% MnCl2-doped Ca2BO3Cl was confirmed in the X-ray dose range of 10–3000 mGy. In addition, a weak OSL peak derived from the 4T1→6A1 transition was detected at around 600 nm from the 0.1% and 0.5% MnCl2-doped Ca2BO3Cl.

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Section: Resultsmentioning

confidence: 84%

Section: Resultsmentioning

confidence: 98%

Dosimetric properties of Mn²⁺-doped Ca₂BO₃Cl

Wauke

Koide

Kawano

et al. 2022

Jpn. J. Appl. Phys.

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“…Dy 3+ , Mn 2+ , Tb 3+ ) have been investigated. [17][18][19][20] For instance, the Dy 2 O 3 -doped Ca 2 BO 3 Cl shows two TSL glow peaks at approximately 110 °C and 250 °C, and a linear X-ray dose response curve is obtained in the 0.1-100 mGy. 17) In addition, the Mn 2+ -doped Ca 2 BO 3 Cl shows both TSL and OSL.…”

Section: Introductionmentioning

confidence: 99%

Dosimetric properties of Tm₂O₃-doped Ca₂BO₃Cl

Wauke,

Kawano,

Nakauchi

et al. 2023

Jpn. J. Appl. Phys.

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In this work, we prepared Ca2BO3Cl with various amounts (0.1–1.0%) of Tm2O3 by conventional solid-state reaction and investigated the dosimeter properties. Scintillation peaks at 370, 455, 470, and 650 nm that were derived from the 4f→4f transition of Tm3+ appeared in the X-ray induced scintillation spectra, and the highest scintillation intensity was detected from the 0.5% Tm2O3-doped Ca2BO3Cl. Furthermore, the Tm2O3-doped Ca2BO3Cl exhibited a thermally-stimulated luminescence (TSL) with a main glow peak at 300 °C, and the fabricated Tm2O3-doped Ca2BO3Cl exhibited a linear response in the 0.1–1000 mGy range. In addition, the TSL spectra confirmed that a final luminescence process for the TSL was the 4f→4f transition of Tm3+. In addition to TSL, optically-stimulated luminescence that was attributable to the 4f→4f transition of Tm3+ was recorded under 520 nm light, and the lowest detectable limit was about 1 mGy.

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“…Recently, much emphasis has been focused on inorganic luminescent materials, which have been widely used in displays, artificial lights, lasers, optical temperature sensors, optoelectronics, X‐ray medical radiography, safety indication, and by fluorescence manufacturers. [ 1–8 ] Despite a high colour‐rendering index (>90), the combination of blue, green, and red phosphors results in emission reabsorption and low efficiency. [ 9 ] As a result, it is critical to discover new white phosphors with increased brightness that arise from a single phosphor.…”

Section: Introductionmentioning

confidence: 99%

Wet chemical synthesis of BiPO₄:Eu³⁺ phosphor for w‐LED application

Nandanwar¹,

Yerpude²,

Kokode³

et al. 2022

Luminescence

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The synthesis of BiPO 4 :Eu 3+ phosphors has been achieved via a wet chemical process. X-ray diffraction patterns show that the phase of the as-prepared samples matches very well with the standard BiPO 4 structure. At 395 nm, the highest excitation intensity was observed. Following 395 nm excitation, two characteristic emission peaks at 592 nm and 616 nm were shown. At 0.5 mol% of Eu 3+ ions, concentration quenching occurred. The particle size is within the micrometre range, according to the scanning electron microscope magnification. The chromaticity coordinates for wavelengths 592 nm and 616 nm are (x = 0.586, y = 0.412) and (x = 0.682, y = 0.317), respectively. The findings imply that the prepared phosphor may be used to create white light-emitting diodes.

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Green, orange and reddish color emitting rare earth activated Ca2BO3Cl phosphor for solid state lighting applications

Cited by 11 publications

References 13 publications

Dosimetric properties of Mn²⁺-doped Ca₂BO₃Cl

Dosimetric properties of Mn²⁺-doped Ca₂BO₃Cl

Dosimetric properties of Tm₂O₃-doped Ca₂BO₃Cl

Wet chemical synthesis of BiPO₄:Eu³⁺ phosphor for w‐LED application

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Green, orange and reddish color emitting rare earth activated Ca2BO3Cl phosphor for solid state lighting applications

Cited by 11 publications

References 13 publications

Dosimetric properties of Mn2+-doped Ca2BO3Cl

Dosimetric properties of Mn2+-doped Ca2BO3Cl

Dosimetric properties of Tm2O3-doped Ca2BO3Cl

Wet chemical synthesis of BiPO4:Eu3+ phosphor for w‐LED application

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Product

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Dosimetric properties of Mn²⁺-doped Ca₂BO₃Cl

Dosimetric properties of Mn²⁺-doped Ca₂BO₃Cl

Dosimetric properties of Tm₂O₃-doped Ca₂BO₃Cl

Wet chemical synthesis of BiPO₄:Eu³⁺ phosphor for w‐LED application