Synthesis and luminescent study of Ce3+-doped terbium–yttrium aluminum garnet

Dotsenko, V. P.; Berezovskaya, I. V.; Zubar, E. V.; Efryushina, N. P.; Poletaev, N. I.; Doroshenko, Yu. A.; Stryganyuk, G.; Voloshinovskii, А.

doi:10.1016/j.jallcom.2012.09.053

Cited by 33 publications

(14 citation statements)

References 31 publications

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“…It should be noted that our observed 9 E intensity, compared to the spinallowed 7 E intensity, in Fig. 6(b) is considerably larger than those in other garnets [13,14,[29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44]. The reason for this is not clear at present.…”

Section: Eu 3 þ Concentration Dependencementioning

confidence: 55%

“…The PLE structures observed at ∼310 and ∼275 nm can be assigned to the spin-forbidden 4f 8 ( 7 F 6 )-4f 7 5d ( 9 E) and spinallowed 4f 8 ( 7 F 6 )-4f 7 5d ( 7 E) transitions in Tb 3þ , respectively. Such Tb 3þ -related absorption bands have also been clearly observed in various garnet crystals, such as Y 3 A1 5 O 12 :Tb 3þ [29][30][31][32][33][34][35], Y 3 Ga 5 O 12 :Tb 3þ [13,14], Gd 3 Al 5 O 12 :Tb 3þ [36,37], Tb 3 Al 5 O 12 [38][39][40][41], Lu 3 Al 5 O 12 :Tb 3þ [42], Y 3 (Al x Ga 1À x ) 5 O 12 :Tb 3þ [43], and Y 2.9 Tb 0.1 (Al x Ga 1À x ) 5 O 12 [44]. It should be noted that our observed 9 E intensity, compared to the spinallowed 7 E intensity, in Fig.…”

Section: Eu 3 þ Concentration Dependencementioning

confidence: 96%

See 1 more Smart Citation

Photoluminescence and resonant energy transfer from Tb3+ to Eu3+ in Tb3Ga5O12:Eu3+ garnet phosphor

Sawada¹,

Adachi²

2015

Journal of Luminescence

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Section: Eu 3 þ Concentration Dependencementioning

confidence: 55%

Section: Eu 3 þ Concentration Dependencementioning

confidence: 96%

Photoluminescence and resonant energy transfer from Tb3+ to Eu3+ in Tb3Ga5O12:Eu3+ garnet phosphor

Sawada¹,

Adachi²

2015

Journal of Luminescence

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“…Such lattice expansion or shrinkage could be a result of the heat treatment temperature on sample phosphors [13,14] or an effect of the nanoscale sample particle size [15,16]. Alternatively there may have been Y 3+ substitution by Gd 3+ [17][18][19][20][21][22][23] or Tb 3+ [24] or again Lu 3+ [25,26]; perhaps there was a different doping concentration of Ce 3+ [27][28][29]. Even though these articles reported very similar wavelength shifts of the emission band maximum, the mechanism of such a lattice effect on Ce 3+ emission were ambiguously allocated to strengthened or weakened crystal field in most of the articles.…”

Section: +mentioning

confidence: 99%

Stress- and Temperature-Dependent Wideband Fluorescence of a Phosphor Composite for Sensing Applications

Zhang

Baxter

et al. 2016

Exp Mech

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As both stress and temperature can alter the lattice of a solid phosphor in a similar way, the dopant rare-earth ion may be used as a probe for either parameter using the same sensing mechanism. Here, a wideband phosphor, YAG:Ce is used as a micro stress sensor at very low magnitudes of compressive stress. The sensing resolution can be smaller than 0.06 N/mm 2 in the range of 0~1.2 N/mm 2 with a sensitivity of 11 cm −1 /MPa. The sensitivity is about a hundred times larger than the coefficient reported under hydrostatic pressure. The barycenter energy of the emission band of a phosphor can be used to indicate stress and/or temperature change, producing a precision beyond the spectroscopic resolution limit. The sensing functions obtained from the barycenter shift are superior to those from peak shifts. The stress/temperature dependent barycenter shift of the observed fluorescence bands of YAG:Ce were similar in magnitude. Mechanisms involving the nephelauxetic effect, crystal field effect and site symmetry of dopant ions are explored as explanations of the experimental phenomena.

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“…The band gap energies of the pure and Ce-doped SrBPO 5 phosphors were calculated from the recorded diffuse reflectance spectra. [5,[11][12][13][14] In particular, the efficiency of green emitting Tb 3+ -doped phosphors can be remarkably enhanced by codoping with Ce 3+ in suitable hosts due to efficient energy transfer between Ce 3+ and Tb 3+ and leading to tricolour lamp Time-resolved emission spectroscopy (TRES) studies confirmed the presence of Ce 3+ in two different environments.…”

mentioning

confidence: 94%

“…[5,[11][12][13][14] In particular, the efficiency of green emitting Tb 3+ -doped phosphors can be remarkably enhanced by codoping with Ce 3+ in suitable hosts due to efficient energy transfer between Ce 3+ and Tb 3+ and leading to tricolour lamp [5,[11][12][13][14] In particular, the efficiency of green emitting Tb 3+ -doped phosphors can be remarkably enhanced by codoping with Ce 3+ in suitable hosts due to efficient energy transfer between Ce 3+ and Tb 3+ and leading to tricolour lamp…”

Section: Introductionmentioning

confidence: 99%

Probing the optical properties and luminescence mechanism of a UV‐emitting SrBPO₅:Ce³⁺ phosphor

et al. 2019

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Ce-doped (1 × 10 −5 to 3.0 mol%) SrBPO 5 phosphors were synthesized using a conventional solid-state reaction route at 1273 K in an air atmosphere. Phase and morphology of the samples were studied from powder X-ray diffraction (XRD) patterns and scanning electron microscope (SEM) micrographs, respectively. The band gap energies of the pure and Ce-doped SrBPO 5 phosphors were calculated from the recorded diffuse reflectance spectra. Photoluminescence (PL) and Ce 3+ lifetime were recorded at 300 and 77 K. Photoluminescence lifetime measurements revealed twolifetime values for Ce 3+ at both 300 K (17 and 36 nsec) and 77 K (12 and 30 nsec), suggesting the presence of two different environments around Ce 3+ . Time-resolved emission spectroscopy (TRES) studies confirmed the presence of Ce 3+ in two different environments. In addition, SrBPO 5 :Ce exhibited intense UV emission, signifying its possible use as an efficient sensitizer for solid-state lighting applications. The effect of γ-irradiation on PL was also determined. Thermally stimulated luminescence (TSL) glow curves of the γ-irradiated phosphor, along with trap parameters, doseresponse, and the possible TSL mechanism were also investigated. Positron annihilation lifetime spectroscopy was carried out to probe defects present in undoped and Ce-doped SrBPO 5 . KEYWORDSband gap, Ce-doped strontium borophosphate, photoluminescence, positron annihilation, thermally stimulated luminescence, trap parameters | INTRODUCTIONRare earth-doped solid-state phosphors have been given much attention due to their practical applications in various fields such as the lighting industry, biomedical fields for imaging, and the nuclear industry for scintillation and dosimetry, etc. [1][2][3] Ce 3+ with electronic configuration 4f 1 5d 0 6s 0 displays unique optical properties as an activator. [4,5] Ce 3+ emits in the UV-visible region, and the position of its lowest 5d band strongly depends on many factors such as host lattices, synthesis route, calcination temperature, and size of phosphors particles. [6][7][8][9][10] Unlike trivalent lanthanide ions, Ce 3+ 4f→5d transitions are parity allowed and show intense, broad luminescence that often sensitizes other Ln 3+ ions, enhancing their luminescence efficiency.Since the last decade, researchers have tried to synthesize an efficient green phosphor for multiple applications such as green lasers, siliconbased detectors, solar cells, fluorescence lamps, cathode ray tubes, and plasma display panels. [5,[11][12][13][14] In particular, the efficiency of green emitting Tb 3+ -doped phosphors can be remarkably enhanced by codoping with Ce 3+ in suitable hosts due to efficient energy transfer between Ce 3+ and Tb 3+ and leading to tricolour lamp

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Synthesis and luminescent study of Ce3+-doped terbium–yttrium aluminum garnet

Cited by 33 publications

References 31 publications

Photoluminescence and resonant energy transfer from Tb3+ to Eu3+ in Tb3Ga5O12:Eu3+ garnet phosphor

Photoluminescence and resonant energy transfer from Tb3+ to Eu3+ in Tb3Ga5O12:Eu3+ garnet phosphor

Stress- and Temperature-Dependent Wideband Fluorescence of a Phosphor Composite for Sensing Applications

Probing the optical properties and luminescence mechanism of a UV‐emitting SrBPO₅:Ce³⁺ phosphor

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Synthesis and luminescent study of Ce3+-doped terbium–yttrium aluminum garnet

Cited by 33 publications

References 31 publications

Photoluminescence and resonant energy transfer from Tb3+ to Eu3+ in Tb3Ga5O12:Eu3+ garnet phosphor

Photoluminescence and resonant energy transfer from Tb3+ to Eu3+ in Tb3Ga5O12:Eu3+ garnet phosphor

Stress- and Temperature-Dependent Wideband Fluorescence of a Phosphor Composite for Sensing Applications

Probing the optical properties and luminescence mechanism of a UV‐emitting SrBPO5:Ce3+ phosphor

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Probing the optical properties and luminescence mechanism of a UV‐emitting SrBPO₅:Ce³⁺ phosphor