Journal
CRYSTENGCOMM
Volume 19, Issue 23, Pages 3215-3221Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ce00601b
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Funding
- National Natural Science Foundation of China (NNSFC) [61405016, 11474132]
- Scientific and Technological Developing Project of Jilin Province [20160101246JC]
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The phase conversions from YF3 to alpha-NaYF4, as well as alpha-NaYF4 to beta-NaYF4 crystals, accompanied by morphology manipulation and upconversion (UC) luminescence enhancement have been demonstrated by simply increasing the Zn2+ ion doping concentration. We systematically discussed the influence of Zn2+ ion doping on the crystal phase and morphology of samples. Zn2+ ion occupies the Y3+ ion crystal lattice site leading to positive vacancy and lower energy barrier in the reaction of forming NaYF4. Besides, we also investigated the UC luminescence intensity enhancement of beta-NaYF4: Yb/Er by Zn2+ ion doping. These results are expected to provide a new strategy for simultaneous phase control and remarkable UC luminescence enhancement of yttrium fluorides, which may be applicable for other fluorides.
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