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Inne
Green-emitting nanoscaled borate phosphors Sr3RE2(BO3)4:Tb3+
Autorzy
Rok wydania
2013
Czasopismo
Materials Chemistry and Physics
Numer woluminu
140
Strony
447-452
DOI
10.1016/j.matchemphys.2013.03.019
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
Three Tb3+ doped mixed strontium – rare earths borate phosphors of general formula Sr3RE2(BO3)4:Tb3+ (RE = Y, La or Gd) of 25–40 nm particle size were obtained by the Pechini sol–gel method, using citric acid and ethylene glycol as gel-forming agents. The structures of prepared materials were confirmed and characterized using X-ray powder diffraction and transmission electron microscopy. Photoluminescence properties, such as emission and excitation spectra and luminescence lifetimes of the phosphors, were measured. Excitation of the phosphors using different wavelengths in the UV range is possible. Lifetimes measured for the phosphors ranged from 2.2 to 2.7 ms. All of the Tb3+-doped phosphors show excellent luminescent properties, with a bright emission of green light under UV excitation. The color coordinates of emitted light on CIE1931 chromaticity diagram are close to those of National Television Standards Committee (NTSC) standard of green.
Słowa kluczowe
nanostructures, inorganic compounds, sol–gel growth, photoluminescence spectroscopy, luminescence
Adres publiczny
http://dx.doi.org/10.1016/j.matchemphys.2013.03.019
Strona internetowa wydawcy
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