Please use this identifier to cite or link to this item:
|Title:||Prevalence of anisotropic shell growth in rare earth core-shell upconversion nanocrystals|
|Citation:||Zhang, C., Lee, J.Y. (2013-05-28). Prevalence of anisotropic shell growth in rare earth core-shell upconversion nanocrystals. ACS Nano 7 (5) : 4393-4402. ScholarBank@NUS Repository. https://doi.org/10.1021/nn4009214|
|Abstract:||Through a series of carefully executed experiments, we discovered the prevalence of anisotropic shell growth in many upconversion NaREF4 systems caused by a combination of factors: selective adsorption of ligands on the core surface due to the core crystal structure, ligand etching, and the lattice mismatch between core and shell components. This could lead to incomplete shell formation in core-shell nanocrystals under certain conditions. Shell growth is always faster in the a and b crystallographic directions than in the c direction. In the case of a larger lattice mismatch between the core and shell, shell growth only occurs in the a and b directions resulting in an oblong core-shell structure. These findings are useful for rationalizing shell-dependent emission properties, understanding the emission mechanisms in complex core-shell nanostructures, and for creating accurate models of core-shell designs for multifunctionality and optimal performance in applications. © 2013 American Chemical Society.|
|Source Title:||ACS Nano|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Jan 15, 2019
WEB OF SCIENCETM
checked on Jan 7, 2019
checked on Dec 28, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.