Combustion synthesis of silicate phosphors

Bhatkar, V.B.; Omanwar, S. K.; Moharil, S. V.

doi:10.1016/j.optmat.2006.04.006

Cited by 73 publications

(31 citation statements)

References 23 publications

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“…The NaMgBO 3 :Dy 3+ and NaMgBO 3 :Sm 3+ phosphors are prepared by well-established solution combustion synthesis method (Bhatkar et al 2002;Thakare et al 2007;Bhatkar et al 2007;Sonekar et al 2007;Sonekar et al 2009;Bajaj and Omanwar 2014;Wu et al 2005). During the reaction, the stoichiometric amounts of high purity starting components, NaNO 3 (G.R.…”

Section: Methodsmentioning

confidence: 99%

“…The main reason of emphasizing on borate is their variety of structure types, transparency to a wide range of wavelengths, high laser damage tolerance, and high optical quality (Bajaj and Omanwar 2013). Combustion synthesis is a good low-cost, one-step, and lowtemperature method for the synthesis of borates, phosphates, and silicates (Khan et al 2015;Bhatkar et al 2002;Thakare et al 2007;Bhatkar et al 2007;Sonekar et al 2007;Sonekar et al 2009). Some orthoborates, LiMgBO 3 :Dy 3+ (Bajaj and Omanwar 2014), NaCaBO3 (Wu et al 2005) (Kumar et al 2013), NaCaBO 3 : Ce 3+ , Mn 2+ (Sun et al 2013), NaCaBO 3 :Ce 3+ , Tb 3+ , Mn 2+ (Zhang and Gong 2014), NaCaBO 3 :Sm 3+ (Bedyal et al 2014), etc., have been synthesized with different methods to explore their crystal structure and luminescent properties for probable applications in medical as well as industrial fields.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and thermoluminescence properties of rare earth-doped NaMgBO3 phosphor

Khan

Ingale

Omanwar

2015

Environ Sci Pollut Res

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Rare earth (Dy(3+) and Sm(3+))-doped sodium magnesium borate (NaMgBO3) is synthesized by solution combustion synthesis method keeping their thermoluminescence properties in mind. The reaction produced very stable crystalline NaMgBO3:RE (RE = Dy(3+), Sm(3+)) phosphors. The phosphors are exposed to (60)Co gamma-ray radiations dose of varying rate from 5 to 25 Gy, and their TL characteristics with kinetic parameters are studied. NaMgBO3:Dy(3+) phosphor shows two peaks for lower doping concentration of Dy(3+) while it reduced to single peak for the higher concentrations of activator Dy(3+). NaMgBO3:Dy(3+) shows the major glow peak around 200 °C while NaMgBO3:Sm(3+) phosphors show two well-separated glow peaks at 200 and 332 °C respectively. The thermoluminescence intensity of these phosphors was compare with the commercially available TLD-100 (Harshaw) phosphor. The TL responses for gamma-ray radiations dose were found to be linear from 5 to 25 Gy for both phosphors while the fading in each case is calculated for the tenure of 45 days.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis and thermoluminescence properties of rare earth-doped NaMgBO3 phosphor

Khan

Ingale

Omanwar

2015

Environ Sci Pollut Res

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“…A recent report showed that such post-annealing can be avoided [21], and further optimization in this direction is desirable. Combustion synthesis is a promising method particularly for low ignition temperature, short time consumption and direct crystallization of small-sized particles [22][23][24]. In the present work, we synthesized the (Ba 1 95 Eu 0 05 )ZnSi 2 O 7 :B 3+ blue-green emitting phosphor by combustion synthesis and investigated its luminescent properties.…”

Section: Introductionmentioning

confidence: 97%

Combustion synthesis and luminescent properties of a blue-green emitting phosphor: (Ba1.95, Eu0.05)ZnSi2O7:B3+

Yao

Xue

et al. 2009

Open Physics

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A blue-green emitting phosphor (Ba1.95, Eu0.05)ZnSi2O7: Bx3+ was prepared by combustion synthesis and an efficient blue-green emission under near-ultraviolet was observed. The luminescence, crystallinity and particle sizes were investigated by using luminescence spectrometry, X-ray diffractometry (XRD) and scanning electron microscopy (SEM). The emission spectrum shows a single band centered at 503 nm, which corresponds to the 4f 65d 1 →4f 7 transition of Eu2+. The excitation spectrum is a broad band extending from 260 to 465 nm, which matches the emission of ultraviolet light-emitting diodes. The optical absorption spectra of the (Ba1.95, Eu0.05)ZnSi2O7: B0.063+ exhibited band-gap energies of 3.9 eV. The results showed that boric acid was effective in improving the luminescence intensity of (Ba1.95, Eu0.05)ZnSi2O7, and the optimum molar ratio of boric acid to zinc nitrate was about 0.06. The phosphor (Ba1.95, Eu0.05)ZnSi2O7: B0.063+ synthesized by combustion method showed 1.5 times improved emission intensity compared with that of the Ba1.95ZnSi2O7: Eu0.052+ phosphor under λex = 353 nm.

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“…To suppress the formation of these green emission secondary phases, except for addition of flux such as ammonia chloride [12], we also explored other nonequilibrium synthesis procedures such as high-temperature microwave firing [22]. As a non-equilibrium synthesis procedures, combustion synthesis easily produces highpurity, micrometer sized materials for low-cost and high production yield [23]. For Eu 2?…”

Section: Introductionmentioning

confidence: 99%

Enhancement of photosynthetic action spectrum for 660 nm-featured phase-pure (Ba,Sr)3MgSi2O8: Eu2+, Mn2+ phosphor by spray-combustion synthesis

Sun

Mao

et al. 2015

J Mater Sci: Mater Electron

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Dual band emissions positioned at both 660 and 430 nm of (Ba, Sr) 3 MgSi 2 O 8 : Eu 2? , Mn 2? phosphor was achieved via spray-combustion synthesis procedure. At a specific limited solid solubility composition Ba 1.3 Sr 1.7 MgSi 2 O 8 , the secondary green-emitting phases of (Ba, Sr) 2 SiO 4 or (Ba, Sr)MgSiO 4 were effectively suppressed to give out the desired 660 nm broad emission. An enhancement of photoluminescence (PL) intensity for 660 nm red emission originated from Mn transition was observed in combustion synthesis samples, indicating an intrinsic promotion of energy transfer from Eu 2? to Mn 2? in (Ba, Sr) 3 MgSi 2 O 8 host. This PL enhancement to 660 nm emission is probably ascribed to an effective reduction of Mn ion in the combustion process with the aid of decomposed reductive radicals formed in situ upon fuel ignition. The crystallized particle size varies in the range from 5 to 20 lm depending on process parameters. A near ultraviolet LED illumination prototype packaged with as-prepared phosphor exhibits to be violet in color. This combustion synthesis process provides an effective means for PL enhancement of phase-pure (Ba,Sr) 3 MgSi 2 O 8 : Eu 2? , Mn 2? phosphors to construct the photosynthetic action spectrum.

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Combustion synthesis of silicate phosphors

Cited by 73 publications

References 23 publications

Synthesis and thermoluminescence properties of rare earth-doped NaMgBO3 phosphor

Synthesis and thermoluminescence properties of rare earth-doped NaMgBO3 phosphor

Combustion synthesis and luminescent properties of a blue-green emitting phosphor: (Ba1.95, Eu0.05)ZnSi2O7:B3+

Enhancement of photosynthetic action spectrum for 660 nm-featured phase-pure (Ba,Sr)3MgSi2O8: Eu2+, Mn2+ phosphor by spray-combustion synthesis

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