Lu C.-H.Jagannathan R.2019-05-132019-05-13200200036951https://scholars.lib.ntu.edu.tw/handle/123456789/407472Luminescent Y3Al5O12: Ce3+ [yttrium aluminum garnet (YAG):Ce3+] nanoceramics (5-50 nm) have been prepared through a facile sol-gel pyrolysis route. A blueshift of about 720 cm-1 in the reflectance spectra near the absorption edge can be observed for YAG:Ce3+ nanoparticles (having an average particle size around 5 nm) with respect to the submicron powders (?0.9 £gm). Furthermore, the scope of application for this important luminescent system can be extended by isostructural substitution with heavier cations such as Ba 2+. This substitution giving rise to an oxygen-vacancy defect complex, that exhibits certain size-sensitive exciton-impurity energy-transfer property in YAG:Ce3+ nanoparticles. ? 2002 American Institute of Physics.[SDGs]SDG7journal article10.1063/1.14757722-s2.0-79955982471https://www.scopus.com/inward/record.uri?eid=2-s2.0-79955982471&doi=10.1063%2f1.1475772&partnerID=40&md5=3dd4715e0eea2017d5d4823ea75af91c