Influence of Er3+/Yb3+ Concentration Ratio on the Down-conversion and Up-conversion Luminescence and Lifetime in GdVO4:Er3+/Yb3+ Microcrystals
2015
Authors
Gavrilović, T. V.Jovanovic, D. J.
Lojpur, Vesna
Nikolić, Aleksandar S.
Dramićanin, Miroslav D.
Article (Published version)
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In this paper, we studied the effects of Er3+/Yb3+ concentration ratio on structural, morphological and luminescence properties of GdVO4:Er3+/Yb3+ green phosphors prepared by a high-temperature solid state method. The samples with different concentrations (between 0.5 to 2 mol%) of dopant Er3+ emitting ions and different concentrations (between 5 to 20 mol%) of sensitizer ions (Yb3+) were studied. The phosphors were characterized by the X-ray diffraction (XRD), scanning electron microscopy (SEM) and photoluminescence spectroscopy. For all samples, XRD diffraction patterns confirmed a formation of a pure GdVO4 phase, while the SEM showed that the materials are comprised of chunks of deformed particles with an average diameter ranging from approximately 2 mu m to 8 mu m. Both, down-conversion and up-conversion emission spectra of GdVO4: Er3+/Yb3+ samples, under near UV and IR excitations, exhibit two strong emission bands in the green spectral region at 525 nm and 552 nm wavelengths corr...esponding to H-2(11/2) - gt I-4(15/2) and S-4(3/2) - gt I-4(15/2) electronic transitions of Er3+ ions. The intensity of the green emission was changed by changing the Er3+/Yb3+ concentration ratio. This dual-mode luminescence makes these materials ideal as green phosphors for a wide variety of applications in the fields of bioanalysis and biomedical.
Keywords:
Solid state synthesis / Luminescence / Up-conversion / Vanadates / Rare-earthsSource:
Science of Sintering, 2015, 47, 2, 221-228Publisher:
- Int Inst Science Sintering (I I S S), Belgrade
Funding / projects:
- Materials of Reduced Dimensions for Efficient Light Harvesting and Energy conversion (RS-45020)
- Size-, shape- and structure- dependent properties of nanoparticles and nanocomposites (RS-172056)
DOI: 10.2298/SOS1502221G
ISSN: 0350-820X
WoS: 000361042100011
Scopus: 2-s2.0-84938313893
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Hemijski fakultet / Faculty of ChemistryTY - JOUR AU - Gavrilović, T. V. AU - Jovanovic, D. J. AU - Lojpur, Vesna AU - Nikolić, Aleksandar S. AU - Dramićanin, Miroslav D. PY - 2015 UR - https://cherry.chem.bg.ac.rs/handle/123456789/1967 AB - In this paper, we studied the effects of Er3+/Yb3+ concentration ratio on structural, morphological and luminescence properties of GdVO4:Er3+/Yb3+ green phosphors prepared by a high-temperature solid state method. The samples with different concentrations (between 0.5 to 2 mol%) of dopant Er3+ emitting ions and different concentrations (between 5 to 20 mol%) of sensitizer ions (Yb3+) were studied. The phosphors were characterized by the X-ray diffraction (XRD), scanning electron microscopy (SEM) and photoluminescence spectroscopy. For all samples, XRD diffraction patterns confirmed a formation of a pure GdVO4 phase, while the SEM showed that the materials are comprised of chunks of deformed particles with an average diameter ranging from approximately 2 mu m to 8 mu m. Both, down-conversion and up-conversion emission spectra of GdVO4: Er3+/Yb3+ samples, under near UV and IR excitations, exhibit two strong emission bands in the green spectral region at 525 nm and 552 nm wavelengths corresponding to H-2(11/2) - gt I-4(15/2) and S-4(3/2) - gt I-4(15/2) electronic transitions of Er3+ ions. The intensity of the green emission was changed by changing the Er3+/Yb3+ concentration ratio. This dual-mode luminescence makes these materials ideal as green phosphors for a wide variety of applications in the fields of bioanalysis and biomedical. PB - Int Inst Science Sintering (I I S S), Belgrade T2 - Science of Sintering T1 - Influence of Er3+/Yb3+ Concentration Ratio on the Down-conversion and Up-conversion Luminescence and Lifetime in GdVO4:Er3+/Yb3+ Microcrystals VL - 47 IS - 2 SP - 221 EP - 228 DO - 10.2298/SOS1502221G ER -
@article{ author = "Gavrilović, T. V. and Jovanovic, D. J. and Lojpur, Vesna and Nikolić, Aleksandar S. and Dramićanin, Miroslav D.", year = "2015", abstract = "In this paper, we studied the effects of Er3+/Yb3+ concentration ratio on structural, morphological and luminescence properties of GdVO4:Er3+/Yb3+ green phosphors prepared by a high-temperature solid state method. The samples with different concentrations (between 0.5 to 2 mol%) of dopant Er3+ emitting ions and different concentrations (between 5 to 20 mol%) of sensitizer ions (Yb3+) were studied. The phosphors were characterized by the X-ray diffraction (XRD), scanning electron microscopy (SEM) and photoluminescence spectroscopy. For all samples, XRD diffraction patterns confirmed a formation of a pure GdVO4 phase, while the SEM showed that the materials are comprised of chunks of deformed particles with an average diameter ranging from approximately 2 mu m to 8 mu m. Both, down-conversion and up-conversion emission spectra of GdVO4: Er3+/Yb3+ samples, under near UV and IR excitations, exhibit two strong emission bands in the green spectral region at 525 nm and 552 nm wavelengths corresponding to H-2(11/2) - gt I-4(15/2) and S-4(3/2) - gt I-4(15/2) electronic transitions of Er3+ ions. The intensity of the green emission was changed by changing the Er3+/Yb3+ concentration ratio. This dual-mode luminescence makes these materials ideal as green phosphors for a wide variety of applications in the fields of bioanalysis and biomedical.", publisher = "Int Inst Science Sintering (I I S S), Belgrade", journal = "Science of Sintering", title = "Influence of Er3+/Yb3+ Concentration Ratio on the Down-conversion and Up-conversion Luminescence and Lifetime in GdVO4:Er3+/Yb3+ Microcrystals", volume = "47", number = "2", pages = "221-228", doi = "10.2298/SOS1502221G" }
Gavrilović, T. V., Jovanovic, D. J., Lojpur, V., Nikolić, A. S.,& Dramićanin, M. D.. (2015). Influence of Er3+/Yb3+ Concentration Ratio on the Down-conversion and Up-conversion Luminescence and Lifetime in GdVO4:Er3+/Yb3+ Microcrystals. in Science of Sintering Int Inst Science Sintering (I I S S), Belgrade., 47(2), 221-228. https://doi.org/10.2298/SOS1502221G
Gavrilović TV, Jovanovic DJ, Lojpur V, Nikolić AS, Dramićanin MD. Influence of Er3+/Yb3+ Concentration Ratio on the Down-conversion and Up-conversion Luminescence and Lifetime in GdVO4:Er3+/Yb3+ Microcrystals. in Science of Sintering. 2015;47(2):221-228. doi:10.2298/SOS1502221G .
Gavrilović, T. V., Jovanovic, D. J., Lojpur, Vesna, Nikolić, Aleksandar S., Dramićanin, Miroslav D., "Influence of Er3+/Yb3+ Concentration Ratio on the Down-conversion and Up-conversion Luminescence and Lifetime in GdVO4:Er3+/Yb3+ Microcrystals" in Science of Sintering, 47, no. 2 (2015):221-228, https://doi.org/10.2298/SOS1502221G . .