The use of zinc ions to control the size of Yb/Er:KMnF<inf>3</inf> nanocrystals with single band emission

Publication Type:
Journal Article
CrystEngComm, 2015, 17 (44), pp. 8457 - 8462
Issue Date:
Filename Description Size
The use of zinc ions to control the size of YbEr.pdfPublished Version2.79 MB
Adobe PDF
Full metadata record
© The Royal Society of Chemistry 2015. Yb/Er co-doped KMnF3 nanocrystals (NCs) exhibit strong single band emission centered at 660 nm, which is beneficial for bio-imaging application. It is known that the bio-distribution, clearance rate, and elimination pathway of intravenously injected NCs are strongly associated with the particle size. Here, we provide a novel method to modify the size of Yb/Er:KMnF3 NCs by introducing Zn2+ in the initial solution. Through changing the concentration of Zn2+ (0-30 mol%), the size of Yb/Er:KMnF3 NCs with cubic phase KMnF3 can be easily tuned from 8 nm to 18 nm. Interestingly, the Zn2+ ions were not incorporated into the lattice structure or adhered on the surface of the final NCs; they just helped the growth of Yb/Er:KMnF3 NCs. Combined with the upconversion emission spectra results, we can provide a direct evidence for the size-dependent upconversion luminescence on account of the final NCs with different sizes having the same components, shape, crystal structure and crystallinity.
Please use this identifier to cite or link to this item: