Enhanced luminescence of SiO2:Eu3+ by energy transfer from ZnO nanoparticles
作者： Jungsik Bang , Heesun Yang , Paul H. Holloway
DOI: 10.1063/1.2007647
关键词:
摘要: ZnO nanoparticles embedded into SiO(2) by an ex situ method were shown to result in stable green emission with a peak at 510 nm compared the normal 495 from micron-sized powders. Green was completely suppressed when they SiO2 doped Eu3+. Instead, f-f emissions Eu3+ enhanced 5-10 times energy transfer The luminescence increased as concentration 1 vs 5 mole % (for 10 ZnO). In addition, intensity up Eu3+). effects of phonon mediated transfer, quenching activator interactions between ions, and back-transfer ions discussed.
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