Photoluminescence of Sm3+, Dy3+, and Tm3+-doped transparent glass ceramics containing CaF2 nanocrystals

Lakshminarayana, G.; Yang, Rong; Mao, Mengfei; Qiu, Jianrong; Kityk, I.V.

doi:10.1016/j.jnoncrysol.2009.08.029

Cited by 84 publications

(36 citation statements)

References 24 publications

(27 reference statements)

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“…The emission band centred at ~561 nm is assigned to 4 G 5/2 → 6 H 5/2 transition, while the band centred at ~596 nm is assigned to 4 G 5/2 → 6 H 7/2 transition, the band centred at ~643 nm is assigned to 4 G 5/2 → 6 H 9/2 transitions, and the band centred at ~703 nm is assigned to 4 G 5/2 → 6 H 11/2 transitions. Among the four emission bands, the transition 4 G 5/2 → 6 H 9/2 (~643 nm) are obviously intensest, different from the transition 4 G 5/2 → 6 H 7/2 as usually reported in previous literature (Mazurak et al, 2010;Lakshminarayana et al, 2009;Henrie et al, 1976;Lakshminarayana and Buddhudu, 2006). This implies that the Sm 3+ in the phosphors shows more red emission compared to orange red emission, although the 4 G 5/2 → 6 H 9/2 transition has almost same intensity as the 4 G 5/2 → 6 H 7/2 transition in natural CaWO 4 crystals (scheelite) as reported in some previous literature (Chang et al, 2002).…”

Section: Resultsmentioning

confidence: 58%

“…The emission peak has higher intensity than the excitation peak [ Figure 5 (Deun et al, 1999). Based on energy level reported earlier (Lakshminarayana et al, 2009;Lakshminarayana and Buddhudu, 2006), the energy level scheme for observed excitation and emission is presented in Figure 6. In addition, the emission intensity of the Sm 3+ in the phosphors is larger about one-two magnitudes, depended on the Sm content, than that of the matrix.…”

Section: Resultsmentioning

confidence: 99%

“…The Sm 3+ (4f 5 ) ion is one of the most interesting trivalent rare earth ions because the fluorescence properties emitting 4 G 5/2 level exhibits relatively high quantum efficiency (Mazurak et al, 2010;Lakshminarayana et al, 2009;Henrie et al, 1976;Lakshminarayana and Buddhudu, 2006).…”

Section: Introductionmentioning

confidence: 99%

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Doping level effect on the luminescence efficiency of Sm3+-doped BaWO4 phosphors prepared by sol-gel process

2016

IJMSI

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Abstract:The Sm-doped BaWO 4 phosphor powders with Sm content of 0-7.5 at.% were fabricated with a sol-gel method. X-ray diffraction analysis, scanning electron microscopy, and photoluminescence spectra analysis were used to characterise the microstructural and photoluminescence efficiency. The effect of Sm doping level was studied. A granular particle morphology and decreased nanoscale average particles size with increasing Sm-doping level were observed. The matrix showed weak violet-blue emission. The Sm 3+ in the BaWO 4 matrix showed red emission that is obviously stronger than violet-blue emission of the matrix. A maximal doping level of Sm 3+ cation was observed for a highest emission efficiency of Sm 3+ cation.

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Section: Resultsmentioning

confidence: 58%

Section: Resultsmentioning

confidence: 99%

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Doping level effect on the luminescence efficiency of Sm3+-doped BaWO4 phosphors prepared by sol-gel process

2016

IJMSI

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“…The quantum efficiency of emission at 1820 nm is 58.2%, 63.4%, 63.7%, 69.8%, 80.3% for 3 at.% Tm, at.% Y ( = 0, 0.5, 1, 2, 3), respectively. As discussed above, cooping Y ions as buffer ions actually benefit the quantum efficiency increasing the quantum efficiency effectively, indicating that the efficiency of the fluoresce is very sensitive to the cationic coordination [21], and the highest quantum efficiency has been increased to 80.3%.…”

Section: Calculations For Spectral Parametersmentioning

confidence: 81%

Optical Spectra Properties and Continuous-Wave Laser Performance of Tm,Y:CaF₂ Single Crystals

Ding

Zhao

et al. 2018

International Journal of Optics

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.3 at.% Tm, at.% Y:CaF 2 crystals ( = 0, 0.5, 1, 2, and 3) were grown by the vertical Bridgman method and investigated. Codoping Y 3+ ions can manipulate the local structure of Tm 3+ ions in the CaF 2 crystal and then improve the spectroscopic properties. Compared with 3 at.% Tm:CaF 2 , 3 at.% Tm, 3 at.% Y:CaF 2 crystal has several advantages. Firstly, the absorption cross section is improved from 0.35 × 10 −20 cm −2 to 0.45 × 10 −20 cm −2 at 767 nm, and the fluorescence intensity had elevated 3.4 times. Secondly, the linewidth of the fluorescence spectrum and lifetime also increased from 164 nm to 191 nm and from 6.16 ms to 8.15 ms at room temperature, respectively. Furthermore, quantum efficiency improved from 58.2% to 80.3%. The maximum laser output power of 583 mW and slope efficiency of 25.3% were achieved in 3 at.% Tm, 3 at.% Y:CaF 2 crystal under 790 nm diode pumping.

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“…Compared with other rare earth ions, the color-rendering index on the proper host materials such as Ca 3 Y(VO 4 ) 3 , CaF 2 , etc. doped with Sm 3 þ ions is higher [20,21]. Further, the morphology of phosphors (shape and size of the powder particles) is one of the key parameters of their industrial application [22,23].…”

Section: Introductionmentioning

confidence: 99%

Effect of NaF flux on microstructure and thermoluminescence properties of Sm3+ doped CdSiO3 nanophosphor

Manjunatha

Nagabhushana

Sunitha

et al. 2013

Journal of Luminescence

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a b s t r a c tThis work reports the preparation of CdSiO 3 :Sm 3 þ (1-7 mol%) nanophosphors by a low temperature solution combustion method. For the first time the effect of NaF flux on the crystallization behavior, morphology, and thermoluminescence property of 5 mol% Sm 3 þ doped CdSiO 3 has been investigated. The nanopowders are well characterized by powder X-ray diffraction (PXRD), Fourier Transform InfraRed (FT-IR), and scanning electron microscopy (SEM). PXRD results indicate that the powder calcined at 800 1C for 2 h has monoclinic phase. SEM results show that the powder is highly porous and the pore size and shape can be modified by the addition of NaF flux. Addition of NaF could lead to formation of particle type morphology and the increase in wt% of NaF changes crystallinity and phase. The thermoluminescence glow curves for 2-6 wt% NaF in CdSiO 3 :Sm 3 þ show a single, well resolved glow peak at 126, 130 and 150 1C, respectively. But for the sample prepared with 8 wt% of NaF flux shows two glow peaks at 148 and 220 1C. With the addition of NaF flux, TL intensity can be effectively enhanced.&

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Photoluminescence of Sm3+, Dy3+, and Tm3+-doped transparent glass ceramics containing CaF2 nanocrystals

Cited by 84 publications

References 24 publications

Doping level effect on the luminescence efficiency of Sm<SUP align="right">3+</SUP>-doped BaWO<SUB align="right">4 phosphors prepared by sol-gel process

Doping level effect on the luminescence efficiency of Sm<SUP align="right">3+</SUP>-doped BaWO<SUB align="right">4 phosphors prepared by sol-gel process

Optical Spectra Properties and Continuous-Wave Laser Performance of Tm,Y:CaF₂ Single Crystals

Effect of NaF flux on microstructure and thermoluminescence properties of Sm3+ doped CdSiO3 nanophosphor

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Photoluminescence of Sm3+, Dy3+, and Tm3+-doped transparent glass ceramics containing CaF2 nanocrystals

Cited by 84 publications

References 24 publications

Doping level effect on the luminescence efficiency of Sm<SUP align="right">3+</SUP>-doped BaWO<SUB align="right">4 phosphors prepared by sol-gel process

Doping level effect on the luminescence efficiency of Sm<SUP align="right">3+</SUP>-doped BaWO<SUB align="right">4 phosphors prepared by sol-gel process

Optical Spectra Properties and Continuous-Wave Laser Performance of Tm,Y:CaF2 Single Crystals

Effect of NaF flux on microstructure and thermoluminescence properties of Sm3+ doped CdSiO3 nanophosphor

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Optical Spectra Properties and Continuous-Wave Laser Performance of Tm,Y:CaF₂ Single Crystals