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Issue 14, 2017
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Insights into Li+-induced morphology evolution and upconversion luminescence enhancement of KSc2F7:Yb/Er nanocrystals

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Abstract

Lanthanide doped KRE2F7 (RE: rare earth) nanocrystals have recently emerged as a new type of upconversion host material due to their distinct crystal structure and tailorable upconversion emissions. However, the controlled synthesis and upconversion fine-tuning through host lattice manipulation have not been well explored. Herein, via Li+ doping, we have systematically studied the morphology and upconversion luminescence evolution of KSc2F7:Yb/Er nanocrystals. An ∼21 times luminescence enhancement and a red to green ratio of ∼22 were obtained, which was caused by Li+ induced local crystal field variation around the doped lanthanide ions. The understanding of Li+-induced KSc2F7:Yb/Er nanocrystal manipulation has paved a new avenue for functionality improvement via high content impurity doping, which should inspire even wider exploration of nanocrystal engineering, especially luminescent nanocrystals.

Graphical abstract: Insights into Li+-induced morphology evolution and upconversion luminescence enhancement of KSc2F7:Yb/Er nanocrystals

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Publication details

The article was received on 11 Feb 2017, accepted on 06 Mar 2017 and first published on 07 Mar 2017


Article type: Paper
DOI: 10.1039/C7TC00649G
Citation: J. Mater. Chem. C, 2017,5, 3503-3508
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    Insights into Li+-induced morphology evolution and upconversion luminescence enhancement of KSc2F7:Yb/Er nanocrystals

    Y. Wang, T. Wei, X. Cheng, H. Ma, Y. Pan, J. Xie, H. Su, X. Xie, L. Huang and W. Huang, J. Mater. Chem. C, 2017, 5, 3503
    DOI: 10.1039/C7TC00649G

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