Abstract
The Er3+–Ag co-doped ZnO nanocrystals have been synthesized by citric acid-assisted combustions method. The effect of different concentration of silver nanoparticles (NPs) on Er3+ doped ZnO nanocrystals and the optical behaviors are explored. The nanocrystals were characterized by X-ray diffractions, scanning electron microscopy, UV–Vis–NIR absorption spectra, X-ray photoelectron spectroscopy, and photoluminescence, respectively. The luminous intensity of Er3+ doped ZnO nanocrystals was significantly influenced by the concentration of silver NPs. A large enhancement in up-conversion intensity has been observed when the concentration of silver NPs was 0.10 mol%. The effect of localized surface plasmon resonance of silver NPs and the energy transfer between the silver NPs and Er3+ ions (2H11/2 → 4I15/2, 4S3/2 → 4I15/2, and 4F9/2 → 4I15/2) are discussed as the sources of enhancement or quenching.
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The authors gratefully acknowledge the financial support from the National Natural Science Foundations of China (No. 61274064).
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Yang, J., Zhang, H., Wang, X. et al. Optical properties of Er3+–Ag co-doped ZnO nanocrystals prepared by combustions method. J Mater Sci: Mater Electron 25, 3895–3900 (2014). https://doi.org/10.1007/s10854-014-2104-y
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DOI: https://doi.org/10.1007/s10854-014-2104-y