Synthesis of Tetragonal Phase LiYF4: Yb and Tm Microcrystals with Strong UV Upconversion Fluorescence
Joint Authors
Zhang, Yongling
Qin, Zhengkun
Shi, Yudi
Liu, Lai
Song, Mingxing
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-4, 4 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-12-23
Country of Publication
Egypt
No. of Pages
4
Main Subjects
Abstract EN
In this work, we synthesized pure tetragonal phase LiYF4 microcrystals by a hydrothermal method.
In the reaction, sodium ions acted as an intermedium species.
The long axis of the quasi-octahedron crystals was about 5 to 20 micrometers.
Strong UV 1I6 → 3H6 (~291 nm), 1I6 → 3F4 (~346 nm), and 1D2 → 3H6 (~362 nm) and blue emissions 1D2 → 3F4 (~450 nm) and 1G4 → 3H6 (~475 nm) could be observed in our samples.
We could see blue luminescence from the microcrystals by our naked eyes in the daylight even if the pump power of the 980 nm laser diode was less than 10 mW.
Obvious energy level splitting was also observed, which indicated that Tm3+ ions were embedded into the crystal lattice very well.
The 1G4 energy level split into four subenergy levels owing to the effect of crystal field.
The upconversion mechanisms were discussed in detail.
American Psychological Association (APA)
Zhang, Yongling& Shi, Yudi& Liu, Lai& Song, Mingxing& Qin, Zhengkun. 2018. Synthesis of Tetragonal Phase LiYF4: Yb and Tm Microcrystals with Strong UV Upconversion Fluorescence. Journal of Nanomaterials،Vol. 2018, no. 2018, pp.1-4.
https://search.emarefa.net/detail/BIM-1193971
Modern Language Association (MLA)
Zhang, Yongling…[et al.]. Synthesis of Tetragonal Phase LiYF4: Yb and Tm Microcrystals with Strong UV Upconversion Fluorescence. Journal of Nanomaterials No. 2018 (2018), pp.1-4.
https://search.emarefa.net/detail/BIM-1193971
American Medical Association (AMA)
Zhang, Yongling& Shi, Yudi& Liu, Lai& Song, Mingxing& Qin, Zhengkun. Synthesis of Tetragonal Phase LiYF4: Yb and Tm Microcrystals with Strong UV Upconversion Fluorescence. Journal of Nanomaterials. 2018. Vol. 2018, no. 2018, pp.1-4.
https://search.emarefa.net/detail/BIM-1193971
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1193971