An efficient synthetic strategy for uniform perovskite core-shell nanocubes NaMgF3:Mn2+, Yb3+@NaMgF3:Yb3+ with enhanced near infrared upconversion luminescence
Date
07/03/2018Metadata
Show full item recordAbstract
Uniform perovskite core-shell nanocubes NaMn1-xMgxF3@NaMgF3 and NaMn1-xMgxF3:Yb3+@NaMgF3:Yb3+ have been successfully synthesized via a facile one-pot co-precipitation method at room temperature. The core-shell structures were carefully characterized by powder X-ray diffraction, transmission electron microscopy, scanning transmission electron microscopy and energy-dispersive X-ray elemental mapping. It was found that the formation mechanisms of the novel core-shell structures consisting of aggregation of precursor molecules/ions, multiple nucleation, surface re-crystallization and further phase transformation. In addition, the DFT calculations further showed that Mn2+ ions tend to aggregate in NaMgF3:Mn2+, and which may be one of important intrinsic factors for formation the unique NaMn1-xMgxF3@NaMgF3 structure in this case. Besides, the unique core-shell structures NaMn1-xMgxF3:Yb3+@NaMgF3:Yb3+ can obviously enhance near-infrared upconversion luminescence of Mn2+, that may find high potential in multiple high-resolution imaging applications.
Citation
Ding , S , Yang , X F , Song , E H , Liang , C L , Zhou , B , Wu , M M , Zhou , W & Zhang , Q Y 2018 , ' An efficient synthetic strategy for uniform perovskite core-shell nanocubes NaMgF 3 :Mn2 + , Yb 3+ @NaMgF 3 :Yb 3+ with enhanced near infrared upconversion luminescence ' , Journal of Materials Chemistry C , vol. 6 , no. 9 , pp. 2342-2350 . https://doi.org/10.1039/C7TC05416E
Publication
Journal of Materials Chemistry C
Status
Peer reviewed
ISSN
2050-7526Type
Journal article
Description
This work is financially supported by the National Natural Science Foundation of China (Grant No. 51125005, 51472088, 51602104).Collections
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.