Strongly enhanced Tb luminescence from titania xerogel solids mesoscopically confined in porous anodic alumina
作者： N. V. Gaponenko , J. A. Davidson , B. Hamilton , P. Skeldon , G. E. Thompson
DOI: 10.1063/1.125921
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摘要: We report strongly enhanced Tb photoluminescence (PL) from a doped titania xerogel deposited on mesoporous anodic alumina. Transmission electron microscopy has confirmed the presence of inside pores alumina films up to several microns thickness. The optical bands attributed 5D3→7Fi (i=3,4,5), 5D4→7Fj (j=3,4,5,6) transitions Tb3+, with predominant band at 2.28 eV, are investigated between 6 and 300 K. At all temperatures, PL increases become narrower an increase in concentration xerogel, number layers employed thickness porous film.
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