1 research outputs found
SrAl4O7 : Eu2+ nanocrystals: synthesis and fluorescence properties
Divalent europium doped strontium di-aluminate (SrAl4O7 : Eu2+)
nanocrystals have been synthesized using a facile sol–gel polymer
thermolysis method. The photoluminescence characteristics of smaller
particles (φ ∼ 15 nm) show a significant difference with respect to their bulk
counterpart. In this nanocrystalline system, the electronic structure of the
Eu2+ excited state seems to undergo considerable modification induced by
the surface states involved in slow relaxation kinetics that mimic
phosphorescence like features