Luminescent properties and X-ray photoelectron spectroscopy study of ZnAl2O4:Ce3+,Tb3+ phosphor

Tshabalala, Kamohelo George; Cho, S.-H.; Park, J.-K.; Pitale, Shreyas S.; Nagpure, I. M.; Kroon, R.E.; Swart, H.C.; Ntwaeaborwa, O.M.

doi:10.1016/j.jallcom.2011.08.054

Cited by 102 publications

(42 citation statements)

References 34 publications

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“…6 X-ray diffraction (XRD) measurements were carried out using a PANalytical X'Pert PRO diffractometer using Cu Ka radiation (k ¼ 1.5406 Å ). More details on the preparation of ZnAl 2 O 4 : Ce 3þ , Tb 3þ phosphors by the combustion method can be found in the literature.…”

Section: Methodsmentioning

confidence: 99%

Enhanced green emission from UV down-converting Ce3+–Tb3+ co-activated ZnAl2O4 phosphor

Tshabalala

Nagpure

Swart

et al. 2012

Journal of Vacuum Science &Amp; Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phen

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Ce 3þ -Tb 3þ co-activated ZnAl 2 O 4 powder phosphors were prepared by a solution combustion method using urea as a fuel. X-ray diffraction characterization showed that all the powders crystallized in the well known cubic spinel phase of ZnAl 2 O 4 . An enhanced down-converted green emission associated with the 5 D 4! 7 F 5 transitions of Tb 3þ ions was observed at 543 nm from the ZnAl 2 O 4 :Ce 3þ , Tb 3þ powders with different concentrations of Ce 3þ and Tb 3þ . It was inferred from the fluorescence decay data that the enhancement was due to energy transfer from Ce 3þ to Tb 3þ . Further, cathodoluminescence intensity degradation of the ZnAl 2 O 4 :Ce 3þ , Tb 3þ powder phosphors was investigated when the powders were irradiated with 2 keV electrons. X-ray photoelectron spectroscopy was used to analyze the chemical and electronic states of individual elements before and after electron irradiation. The ZnAl 2 O 4 :Ce 3þ , Tb 3þ phosphor was evaluated to be used as a UV downconverting layer in conventional silicon photovoltaic cells or as a source of green light in field emission display technologies.

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Section: Methodsmentioning

confidence: 99%

Enhanced green emission from UV down-converting Ce3+–Tb3+ co-activated ZnAl2O4 phosphor

Tshabalala

Nagpure

Swart

et al. 2012

Journal of Vacuum Science &Amp; Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phen

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“…Miron and Group [27]have simply prepared ZnAl 2 O 4 : Tb phosphor by co-precipitation method and investigated its optical property using excitation, optical absorption and emission spectroscopy. Tshabalala et al[28,29] discussed the photophysical properties of Ce, Tb co-doped ZnAl 2 O 4 ; mostly photo and cathode luminescence. They concluded that green emission of Tb 3+ was sensitized by Ce 3+ , i.e.…”

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confidence: 99%

An insight into optical spectroscopy of intense green emitting ZnAl2O4:Tb3+ nanoparticles: photo, thermally stimulated luminescence and EPR study

Kumar

Gupta

2015

Journal of Luminescence

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“…For the aluminate and phosphate compounds, such as ZnAl 2 O 4 , CaYAl 3 O 7 , Sr 2 P 2 O 7 , Sr 3 Gd(PO 4 ) 3 and KSrY(PO 4 ) 2 , the available energy transfer between Ce 3? and Tb 3? also diffusely exists [6,[12][13][14][15]. The most famous representative ones are phosphors LaPO 4 :Ce 3?…”

Section: Introductionmentioning

confidence: 99%

Luminescence properties and energy transfer in Ca3(PO4)2:Ce3+, Tb3+ phosphors

Wang

Chen

et al. 2015

Appl. Phys. A

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A series of Ce 3? , Tb 3? and Ce 3? -Tb 3? -doped Ca 3 (PO 4 ) 2 were prepared by high-temperature solid-state reaction, and X-ray diffraction was used to characterize the phase structure. The photoluminescence and energy transfer properties of Ce 3? -and Tb 3? -doped Ca 3 (PO 4 ) 2 host were investigated. Under the 290-nm radiation excitation, the emission spectrum of Ca 3 (PO 4 ) 2 :Ce 3? shows one broad band that peaks at 360 nm, which is attributed to the 5d-4f transition of Ce 3? . Ce 3? and Tb 3? co-doped Ca 3 (PO 4 ) 2 phosphors exhibit both blue emission from Ce 3? ions and intense green emission lines from Tb 3? at the excitation of Ce 3? . These results indicate that there exits valid energy transfer from Ce 3? to Tb 3? . The energy transfer from Ce 3? to Tb 3? in Ca 3 (PO 4 ) 2 was demonstrated to be a resonant type via electric dipole-quadrupole interaction. The critical distance of energy transfer was also calculated. Moreover, the emitting color of Ca 3 (PO 4 ) 2 :Ce 3? , Tb 3? can be tuned by appropriately adjusting the relative doping composition of Ce 3? /Tb 3? .

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Luminescent properties and X-ray photoelectron spectroscopy study of ZnAl2O4:Ce3+,Tb3+ phosphor

Cited by 102 publications

References 34 publications

Enhanced green emission from UV down-converting Ce3+–Tb3+ co-activated ZnAl2O4 phosphor

Enhanced green emission from UV down-converting Ce3+–Tb3+ co-activated ZnAl2O4 phosphor

An insight into optical spectroscopy of intense green emitting ZnAl2O4:Tb3+ nanoparticles: photo, thermally stimulated luminescence and EPR study

Luminescence properties and energy transfer in Ca3(PO4)2:Ce3+, Tb3+ phosphors

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