Abstract
Sm3+ activated thorium oxide nanorods were synthesized by cationic surfactant assisted reverse micellar route. Phase purity, morphological and luminescent properties were investigated by X-ray diffraction, high resolution transmission electron microscopy and photoluminescence spectroscopy. Upon UV light excitation (245nm), ThO2:Sm3+ exhibited host emission at 447nm, along with characteristic emission lines of Sm3+ at 569, 609, 662 and 716nm. Lifetime spectroscopy shows the presence of two types of Sm3+ (τ=1.1ms and 4.9ms) with different asymmetric ratios.
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