Impurity doping: a novel strategy for selective synthesis of YF3 and NaYF4 crystals

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 influe...

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Bibliographic Details
Published inCrystEngComm Vol. 19; no. 23; pp. 3215 - 3221
Main Authors Zhang, Peng, Qin, Weiping, Li, Daguang, Wang, Lili
Format Journal Article
LanguageEnglish
Published 21.06.2017
Subjects
Conversion
Crystals
Doping
Fluorides
Lattice vacancies
Luminescence
Morphology
Strategy
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Summary: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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ISSN:1466-8033
DOI:10.1039/c7ce00601b