Blue, yellow and orange color emitting rare earth doped BaCa2Al8O15 phosphors prepared by combustion method

Yerpude, A.N.; Dhoble, S.J.; Reddy, B. Sudhakar

doi:10.1016/j.physb.2014.05.070

Cited by 26 publications

(9 citation statements)

References 29 publications

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“…In Eu 3+ heavily doped samples, cluster centers can be formed that induce luminescence quenching. In fact, Sm 3+ is an essential activator for the production of orange–red emission by many inorganic lattices because of its 4 G 5/2 → 6 H J ( J = 5/2, 7/2, 9/2 and 11/2) transitions . To the best of our knowledge, there are no reports on the PL properties of Sm 3+ ‐doped La 3 SbO 7 antimonate phosphors.…”

Section: Introductionmentioning

confidence: 99%

Photoluminescence properties of a new orange–red‐emitting Sm³⁺–La₃SbO₇ phosphor

Deng

Zhao

et al. 2015

Luminescence

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The antimonate compound La3SbO7 has high chemical stability, lattice stiffness and thermal stability. Orange-red-emitting antimonate-based phosphors La3SbO7:xSm(3+) (x = 0.02, 0.05, 0.08, 0.10, 0.15, 0.20 and 0.25) were synthesized. The phase structure and photoluminescence properties of these phosphors were investigated. The emission spectrum obtained on excitation at 407 nm contained exclusively the characteristic emissions of Sm(3+) at 568, 608, 654 and 716 nm, which correspond to the transitions from (4)G5/2 to (6)H5/2, (6)H7/2, (6)H9/2 and (6)H11/2 of Sm(3+), respectively. The strongest emission was located at 608 nm due to the (4)G5/2→(6)H7/2 transition of Sm(3+), generating bright orange-red light. The critical quenching concentration of Sm(3+) in La3SbO7:Sm(3+) phosphor was determined as 10% and the energy transfer between Sm(3+) was found to be through an exchange interaction. The International Commission on Illumination chromaticity coordinates of the La3SbO7:0.10Sm(3+) phosphors are located in the orange-red region. The La3SbO7:Sm(3+) phosphors may be potentially used as red phosphors for white light-emitting diodes.

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Section: Introductionmentioning

confidence: 99%

Photoluminescence properties of a new orange–red‐emitting Sm³⁺–La₃SbO₇ phosphor

Deng

Zhao

et al. 2015

Luminescence

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“…6 H 7/2 transitions, respectively. [20,21] Due to the absence of a centre of symmetry, the 4f orbitals mixed with the opposite parity orbitals, resulting in the electric-dipole transitions. While the 4 G 5/2 !…”

Section: Photoluminescence Properties Of Kbapo 4 : Sm 3+ Phosphormentioning

confidence: 99%

Luminescence characterization of KBaPO₄:RE (RE = Sm³⁺,Eu³⁺,Dy³⁺) phosphors

Ramteke¹,

Yerpude²,

Dhoble

et al. 2020

Luminescence

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KBaPO4 luminescent powdered phosphors doped with rare earth elements (RE = Sm3+,Eu3+,Dy3+) were successfully synthesized using a wet chemical method to identify the most suitable phosphor for solid‐state lighting based on the measurement of their emission spectra at excitation wavelengths. The X‐ray diffraction pattern of the as‐prepared KBaPO4 was well matched with its standard JCPDS file no. 330996, indicating the formation of the desired compound. Scanning electron microscopy images revealed irregular morphology, the material crystallized particles aggregated and were non‐uniform with particle sizes ranging from 1 to 100 μm. Photoluminescence excitation and emission spectra clearly indicated that the phosphor containing the Sm3+‐activated KBaPO4 phosphors could be efficiently excited at 403 nm and exhibited an emission mainly including two wavelength peaks at 559 nm and 597 nm. The phosphor containing the Eu3+‐activated KBaPO4 phosphors could be efficiently excited at 396 nm and exhibited a bright red emission mainly including two wavelength peaks at 594 nm and 617 nm. The phosphor containing the Dy3+‐activated KBaPO4 phosphors could be efficiently excited at 349 nm and exhibited wavelength peaks at 474 nm and 570 nm.

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“…Photoluminescence properties of a phosphor is fully depends on the concentration of dopants [18]. It is well known that the pattern of emission peak does not change with doping of rare earth ions, only the emission intensity vary with increasing the concentration of rare earth ions [19]. Fig.…”

Section: I) Pl Emission Of Dy 3+ In Y 2 O 2 Smentioning

confidence: 99%

Synthesis of Dy3+, Eu3+ and Tb3+ Activated Y2O2S Optoelectronic Phosphors for N-UV LED Applications

Shinde,

Dhoble*

2020

IJITEE

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In this, a series of iso-structural Y2O2S (RE3+ = Dy3+ , Eu3+ and Tb3+) phosphors were synthesized by high temperature solid state reaction method. All the phosphors exhibit strong line and broad excitation in the near ultraviolet (n-UV) region. Bright color emission in blue, green and red color region of electromagnetic hue cycle was noticed. The concentration of activator doped was optimized from the photoluminescence (PL) study. The quenching in luminescence intensity after particular concentration of dopant is discussed here. Y2O2S phosphor doped with Dy3+displays useful blue and yellow emission bands at 487nm and 574nm, when stimulated by 388nm excitation wavelength. Y2O2S:Eu3+ phosphor displays an orange and red emission at 594nm and 620nm, when stimulated at 396 nm. Whereas, Y2O2S:Tb3+ phosphor displays weak blue radiation in the range 485nm and strong green radiation at 545nm, when stimulated at 305 nm. The excitation spectra used for the Y2O2S:RE3+ (RE3+ = Dy3+ , Eu3+ and Tb3+) phosphor is in the near ultraviolet (n-UV) region spanning from 300 nm to 400 nm, which is a peculiarity of near ultraviolet stimulated LED. The outcome of the RE3+ (RE3+= Dy3+ , Eu3+and Tb3+) absorption on the luminescence properties of Y2O2S:RE3+ phosphors was also studied.

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Blue, yellow and orange color emitting rare earth doped BaCa2Al8O15 phosphors prepared by combustion method

Cited by 26 publications

References 29 publications

Photoluminescence properties of a new orange–red‐emitting Sm³⁺–La₃SbO₇ phosphor

Photoluminescence properties of a new orange–red‐emitting Sm³⁺–La₃SbO₇ phosphor

Luminescence characterization of KBaPO₄:RE (RE = Sm³⁺,Eu³⁺,Dy³⁺) phosphors

Synthesis of Dy3+, Eu3+ and Tb3+ Activated Y2O2S Optoelectronic Phosphors for N-UV LED Applications

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Blue, yellow and orange color emitting rare earth doped BaCa2Al8O15 phosphors prepared by combustion method

Cited by 26 publications

References 29 publications

Photoluminescence properties of a new orange–red‐emitting Sm3+–La3SbO7 phosphor

Photoluminescence properties of a new orange–red‐emitting Sm3+–La3SbO7 phosphor

Luminescence characterization of KBaPO4:RE (RE = Sm3+,Eu3+,Dy3+) phosphors

Synthesis of Dy3+, Eu3+ and Tb3+ Activated Y2O2S Optoelectronic Phosphors for N-UV LED Applications

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Photoluminescence properties of a new orange–red‐emitting Sm³⁺–La₃SbO₇ phosphor

Photoluminescence properties of a new orange–red‐emitting Sm³⁺–La₃SbO₇ phosphor

Luminescence characterization of KBaPO₄:RE (RE = Sm³⁺,Eu³⁺,Dy³⁺) phosphors