Journal
CRYSTENGCOMM
Volume 13, Issue 11, Pages 3782-3787Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1ce05092c
Keywords
-
Categories
Funding
- National High Technology Research and Development Program of China (863 Program) [2009AA03Z309]
- National Natural Science Foundation of China (NSFC) [51072065, 60908031, 60908001]
- Program for New Century Excellent Talents in University [NCET-08-0243]
Ask authors/readers for more resources
Monodisperse, hexagonal phase NaLuF4 : Yb, Tm nanoplates (NPs) with uniform size have been successfully synthesized by a novel solution-based method. The nanoplates have a perfect hexagonal shape with a diameter of similar to 180 nm. As a chelating agent and shape modifier, oleic acid (OA) was introduced into the reaction mixture and played a key role in fine-tuning the nanoplates. A possible growth mechanism was proposed for the formation of beta-NaLuF4 nanoplates. Spectral analysis showed that the beta-NaLuF4 : Yb, Tm nanoplates were excellent materials for intense ultraviolet and blue upconversion luminescence. To our best knowledge, it is the first time such intense 5-photon upconversion fluorescence from the I-1(6) level of Tm3+ ions, which is much stronger than the 4-photon upconversion fluorescence from the D-1(2) level and the 3-photon upconversion fluorescence from the (1)G(4) level, has been demonstrated. The analysis on temporal evolutions of UC luminescence suggests that beta-NaLuF4 nanocrystals might be a better kind of upconversion material than their beta-NaYF4 counterpart. This powerfully demonstrates that beta-NaLuF4 is an excellent host lattice for upconversion luminescence materials. Due to the unique luminescence, these beta-NaLuF4 nanoplates may be promising for further fundamental research and applications in color displays and solid-state lasers.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available