An Eu3+ ion's luminescence study of Al2O3:Eu3+, Bi3+

Chen, G.; Shi, Yuhua; Li, B.; Zhang, N.; Yuanbin, Chi; Dou, Kai

doi:10.1007/bf00422681

Cited by 12 publications

(3 citation statements)

References 10 publications

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“…The particles showed photoluminescence (PL) at 614 nm. To enhance the Eu emission intensity, many workers have codoped with either other rare earth or transition metal ions [22,23].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of Eu:Y2O3 nanoparticles

Huang

Chin

et al. 2002

Nanotechnology

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The red-emitting nanophosphor Eu:Y2O3 was synthesized using the the microemulsions method. The microemulsion system was composed of petroleum ether (60-80 °C), nonionic surfactants NP5/NP9, aqueous yttrium nitrate/europium nitrate and ammonium hydroxide solution. The nanoparticles were studied by thermal analysis, x-ray diffraction, transmission electronic microscopy, scanning electron microscopy and photoluminescence. The size of the nanoparticles was in the range 10-100 nm, and showed a narrow size distribution, high crystallinity and special luminescent properties. Compared with the phosphors prepared by the conventional method, the quenching concentration of Eu was raised remarkably. For this type of nanophosphor, quenching starts at a Eu concentration of 10% (mol%), while a value of 6-8% was obtained for the conventional one (Tao Y 1996 Mater. Lett. 28 137-40). Based on this study, we have successfully prepared some promising nanophosphors.

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“…The particles showed photoluminescence (PL) at 614 nm. To enhance the Eu emission intensity, many workers have codoped with either other rare earth or transition metal ions [22,23].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of Eu:Y2O3 nanoparticles

Huang

Chin

et al. 2002

Nanotechnology

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“…1 The europium emission intensity can be enhanced by codoping with either rare earth or metal ions in different matrices. 4 Tian et al reported that codoped Al 3+ can improve the emission intensity of BaZr͑BO 3 ͒ 3 :Eu 3+ under 147-nm excitation, 5 so Al 3+ was codoped into the Ca 4 GdO͑BO 3 ͒ 3 :Eu lattices in this work.…”

mentioning

confidence: 70%

Synthesis of Ca[sub 4]GdO(BO[sub 3])[sub 3]:Eu[sup 3+], Al[sup 3+] by Sol-Gel Processing and Its Luminescence Properties

Wang

Lin

2006

J. Electrochem. Soc.

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Single phase of Eu 3+ and Al 3+ codoped Ca 4 GdO͑BO 3 ͒ 3 was successfully prepared by sol-gel processing at 1000°C, which is 400°C lower than that of solid-state reaction. Morphology analysis reveals that the synthesized phosphors have nonagglomerated, uniform, small particle size and sphere-like morphology without the grinding process. The photoluminescence properties of Eu 3+ and Al 3+ activated Ca 4 GdO͑BO 3 ͒ 3 phosphor prepared by sol-gel processing under UV and vacuum-UV excitation were studied and compared to the bulk synthesized by solid-state reaction. The broad bands centered at about 181 and 248 nm were obtained in their excitation spectra, which are assigned to the absorption of the host crystal and the charge transition ͑CT͒ band of Eu 3+ . The broad band at about 135-160 nm was observed in this phosphor for the first time. By calculating, the broad band about 135-160 nm could be assigned to the CT band and f-d transition of Gd 3+ . The excitation intensity was enhanced by codoping with Al 3+ into the Ca 4 GdO͑BO 3 ͒ 3 :Eu 3+ lattices. Under 254-and 147-nm excitation, the intense pure red emission ͑ em = 612 nm͒ was observed in their emission spectra and the sample prepared by the sol-gel process had higher luminescence intensity than that derived from solid-state reaction.

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“…Eu 3+ behaves as an activator center for scintillation and luminescence phenomena. To enhance the europium emission intensity, many workers have activated it by co-doping with either rare earth or transition metal ions in different matrices [1].…”

Section: Introductionmentioning

confidence: 99%

Photo-luminescent properties of Eu3+ ion-doped Ca4REO(BO3)3 (RELa,Y,Gd)

Zhang

2005

Journal of Luminescence

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An Eu3+ ion's luminescence study of Al2O3:Eu3+, Bi3+

Cited by 12 publications

References 10 publications

Synthesis and characterization of Eu:Y2O3 nanoparticles

Synthesis and characterization of Eu:Y2O3 nanoparticles

Synthesis of Ca[sub 4]GdO(BO[sub 3])[sub 3]:Eu[sup 3+], Al[sup 3+] by Sol-Gel Processing and Its Luminescence Properties

Photo-luminescent properties of Eu3+ ion-doped Ca4REO(BO3)3 (RELa,Y,Gd)

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