REVO4 -Based Nanomaterials (RE = Y, La, Gd, and Lu) as Hosts for Yb3+/Ho3+ , Yb 3+ /Er3+, and Yb3+/Tm3+ Ions: Structural and Up-Conversion Luminescence Studies
PBN-AR
Instytucja
Wydział Chemii (Uniwersytet im. Adama Mickiewicza w Poznaniu)
Informacje podstawowe
Główny język publikacji
en
Czasopismo
Journal of the American Ceramic Society
ISSN
0002-7820
EISSN
1551-2916
Wydawca
WILEY-BLACKWELL
DOI
URL
Rok publikacji
2016
Numer zeszytu
10
Strony od-do
3300-3308
Numer tomu
99
Link do pełnego tekstu
Identyfikator DOI
Liczba arkuszy
Autorzy
(liczba autorów: 3)
Pozostali autorzy
+ 1
Słowa kluczowe
en
dopants/doping
nanomaterials
up-conversion
rare earth vanadates
Streszczenia
Język
en
Treść
Rare-earth vanadates of the form REVO4 (RE = Y, La, Gd, and Lu) doped by Yb3+/Ho3+, Yb3+/Er3+, or Yb3+/Tm3+ lanthanide ions were successfully synthesized using the sol-gel method and annealing at 600 degrees C in an air atmosphere. The structure and morphology of the prepared nanocrystals were investigated by X-ray diffraction, thermogravimetric analysis, transmission electron microscopy, and energy-dispersive X-ray spectroscopy. All prepared materials were homogenous and had nanosized dimensions. Their elemental compositions were confirmed by optical emission spectrometry. Spectroscopic analysis of the materials was carried out by measuring excitation and emission spectra, luminescence decays, and dependence between the intensity of the luminescence and the laser energy. Following effective excitation by NIR radiation, Ln(3+) co-doped vanadate matrices exhibited a strong up-conversion (UC) luminescence. Differences in spectroscopic properties between monoclinic LaVO4 and tetragonal YVO4, GdVO4, or LuVO4 doped by Ln(3+) ions were observed, indicating the influence of the crystal structure on the UC emission. Drawing conclusions from these spectroscopic investigations, the UC mechanisms were proposed, including energy-transfer processes between Yb3+ ions and emitting ions.
Cechy publikacji
discipline:Chemia
discipline:Fizyka
discipline:Inżynieria materiałowa
discipline:Chemistry
discipline:Physics
discipline:Materials science
Original article
Original article presents the results of original research or experiment.
Oryginalny artykuł naukowy
Oryginalny artykuł naukowy przedstawia rezultaty oryginalnych badań naukowych lub eksperymentu.
Inne
System-identifier
PBN-R:764056
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