Optical properties of blue emitting Ce3+ activated XMg2Al16O27 (X = Ba, Sr) phosphors

Pawade, Vijay B.; Dhoble, S.J.

doi:10.1016/j.optcom.2011.05.015

Cited by 19 publications

(3 citation statements)

References 25 publications

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“…As a results, there are numerous reports in the literature that include the synthesis, characterization, and optical application of light emitting materials based on RE ions. Light emitting semiconducting materials incorporating RE ions (e.g., Eu, Yb, Er, Ho, Tm, and Tb) have been investigated for applications in optoelectronics. , In addition, narrow band emission based on f→ f transitions of RE ions is suitable for use in flat panel displays, radiation detection, solid state lighting (SSL), medical labeling, and imaging. − Most phosphors based on RE doped host are excellent functional materials because of their outstanding optical, chemical, thermal, and electronic properties and environmental friendliness. − Although light emission from many RE ions is characterized by a narrow band associated with the f → f transitions of these ions, Ce 3+ exhibits crystal field dependent broad band emission associated with the d → f transitions. The commonly used RE dopants/activators are Ce 3+ , Tb 3+ , Eu 3+ /Eu 2+ , Gd 3+ , Dy 3+ , Sm 3+ , Tm 3+ , Er 3+ , Yb 3+ , and Nd 3+ . , The nanocrystals of ZnO are suitable host materials for optically active doping elements such as RE ions .…”

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Rare Earth Doped Zinc Oxide Nanophosphor Powder: A Future Material for Solid State Lighting and Solar Cells

et al. 2017

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A comprehensive review of up-conversion (UP) and down-conversion (DC) or down shifting of rare earth (RE) doped zinc oxide (ZnO) nanophosphors is presented. Research interest in the development of RE 3+ doped ZnO for UP and DC nanophosphors has been encouraged by the potential application of these materials in light emitting diodes and different types of photovoltaic cells. A range of remarkable characteristics, which are organized into different sections describing the structure, optical, and luminescence properties of these materials, are discussed in detail. Undoped ZnO has two characteristic emissions in the ultraviolet and visible regions related, respectively, to excitonic recombination and intrinsic defects. X-ray photoelectron spectroscopy (XPS) data demonstrated a correlation between the visible emission and intrinsic defects. In the case of the DC or shifting process, there was simultaneous emissions related to f → f transitions of RE ions and defects in ZnO host. These emissions were dependent on the synthesis method, annealing temperature, and RE ion concentration, among other things; only f → f transitions of RE ions were observed in the case of the UC process. These down and up conversion RE doped ZnO phosphors were evaluated for a possible application in solid state lighting and photovoltaic cells.

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Rare Earth Doped Zinc Oxide Nanophosphor Powder: A Future Material for Solid State Lighting and Solar Cells

et al. 2017

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“…After removing the excitation source, the trapped carriers are thermally released and move in the valence or conduction bands, they then recombine with opposite charges and provide light emission at luminescent centers . Recently, Pawade et al have investigated some of the novel blue emitting Eu 2+ , Ce 3+ doped oxide‐based phosphors prepared via the combustion method . This paper reports the preparation of BaCa 2 Al 8 O 15 :Eu 2+ ,Dy 3+ by the combustion method.…”

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confidence: 99%

Synthesis and characterization of blue long‐lasting BaCa₂Al₈O₁₅:Eu²⁺, Dy³⁺ phosphor

Yerpude

Dhoble

Haranath³

2013

Luminescence

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We have synthesized and characterized a new BaCa2Al8O15:Eu(2+),Dy(3+) phosphor prepared by the combustion method. X-ray diffraction, thermoluminescence, scanning electron microscope, time decay and optical spectral analysis photoluminescence excitation, emission spectra were used to characterize the phosphors. Broadband ultraviolet excited luminescence of the BaCa2Al8O15:Eu(2+),Dy(3+) was observed in the blue region (λ(max) = 435 nm) due to transitions from the 4f(6)5d(1) to the 4f(7) configuration of the Eu(2+) ion. Scanning electron microscopy has been used for exploring the morphological properties of the prepared phosphors. The BaCa2Al8O15:Eu(2+) phosphor has a blue afterglow when Dy(3+) ions were co-doped. The thermoluminescence spectra show that the Dy(3+) ion induces a proper trap in the phosphor with a depth of 0.67 eV and results in a long afterglow phosphorescence.

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“…Especially, Dy 3+ , Eu 3+ doped phosphors have played an important role in developing white LEDs. Recently some researchers have been reported new luminescent materials applied in white light emission diodes (LEDs) [13][14][15][16][17]. The search for stable, inorganic rare earth based red, blue, yellow phosphors with high absorption in the near UV/blue spectral region is therefore an attractive research task.…”

Section: Introductionmentioning

confidence: 99%

Trivalent Rare Earth Activated SrCaAl2O5 Phosphor For White Light-emtting Diode

Dhoble¹

2013

Adv. Mater. Lett.

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Eu 3+ , Dy 3+ activated SrCaAl2O5 phosphor were synthesized by the combustion method at 550°C. The prepared phosphor characterized by X-ray diffraction and photoluminescence measurements. The photoluminescence study of Eu 3+ doped phosphor shows that the intensity of electric dipole transition ( 5 D0→ 7 F2) at 615 nm dominates over that of magnetic dipole transition ( 5 D0→ 7 F1) at 596 nm under 395nm excitation. The PL emission spectrum of Dy 3+ ion at 350nm excitation gives an emission band at 484 nm (blue) and 575 nm (yellow). The optimum concentration of both the dopant having highest luminescence intensity is found to be 0.5 mole %. The obtained PL results indicated that prepared phosphor is suitable as near UV excited white light-emitting diodes.

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Optical properties of blue emitting Ce3+ activated XMg2Al16O27 (X = Ba, Sr) phosphors

Cited by 19 publications

References 25 publications

Rare Earth Doped Zinc Oxide Nanophosphor Powder: A Future Material for Solid State Lighting and Solar Cells

Rare Earth Doped Zinc Oxide Nanophosphor Powder: A Future Material for Solid State Lighting and Solar Cells

Synthesis and characterization of blue long‐lasting BaCa₂Al₈O₁₅:Eu²⁺, Dy³⁺ phosphor

Trivalent Rare Earth Activated SrCaAl2O5 Phosphor For White Light-emtting Diode

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Optical properties of blue emitting Ce3+ activated XMg2Al16O27 (X = Ba, Sr) phosphors

Cited by 19 publications

References 25 publications

Rare Earth Doped Zinc Oxide Nanophosphor Powder: A Future Material for Solid State Lighting and Solar Cells

Rare Earth Doped Zinc Oxide Nanophosphor Powder: A Future Material for Solid State Lighting and Solar Cells

Synthesis and characterization of blue long‐lasting BaCa2Al8O15:Eu2+, Dy3+ phosphor

Trivalent Rare Earth Activated SrCaAl2O5 Phosphor For White Light-emtting Diode

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Synthesis and characterization of blue long‐lasting BaCa₂Al₈O₁₅:Eu²⁺, Dy³⁺ phosphor