In:
Vietnam Journal of Science, Technology and Engineering, Ministry of Science and Technology, Vietnam (VMOST), Vol. 59, No. 3 ( 2017-9-30), p. 79-84
Abstract:
The precursor PVP-capped α-NaYF4:Yb3+/Er3+ nanospheres were used as the templates for preparing the α-NaYF4:Yb3+/Er3+/PVP/MOFs multilayer nanocrystals with a self-template method. By using iron (III) carboxylate and zeolitic imidazolate frameworks dissolved in dimethylformamide (DMF) solution containing 25% of diethylene glycol (DEG), the spherical-shaped α-NaYF4:Yb3+/Er3+/PVP/MIL-100 and α-NaYF4:Yb3+/Er3+/PVP/ZIF-8 multilayer nanocrystals were successfully prepared with the sizes of 300-500 nm at 100oC for one hour. Under a 976 nm laser excitation at room temperature, the α-NaYF4:Yb3+/Er3+/PVP/MIL-100 and α-NaYF4:Yb3+/Er3+/PVP/ZIF-8 multilayer nanocrystals exhibited strong up-conversion luminescence with three emission bands centered at around 520 nm, 540 nm, and 655 nm corresponding to 2H11/2 → 4I15/2, 4S3/2 → 4I15/2, and 4F9/2 → 4I15/2transitions of Er3+ ions, respectively.
Type of Medium:
Online Resource
ISSN:
2525-2461
DOI:
10.31276/VJSTE.59(3)
DOI:
10.31276/VJSTE.vol(number).page
DOI:
10.31276/VJSTE.59(3).79
Language:
Unknown
Publisher:
Ministry of Science and Technology, Vietnam (VMOST)
Publication Date:
2017
detail.hit.zdb_id:
3145662-5
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