Simultaneous phase and size control of upconversion nanocrystals through lanthanide doping.

Citation data:

Nature, ISSN: 1476-4687, Vol: 463, Issue: 7284, Page: 1061-5

Publication Year:
2010
Usage 2344
Abstract Views 2028
PDF Views 174
HTML Views 139
Link-outs 3
Captures 460
Readers 447
Exports-Saves 13
Mentions 1
Blog Mentions 1
Social Media 3
Shares, Likes & Comments 3
Citations 1663
Citation Indexes 1663
Repository URL:
http://hdl.handle.net/10754/561452
PMID:
20182508
DOI:
10.1038/nature08777
Author(s):
Wang, Feng, Han, Yu, Lim, Chin Seong, Lu, Yunhao, Wang, Juan, Xu, Jun, Chen, Hongyu, Zhang, Chun, Hong, Minghui, Liu, Xiaogang
Publisher(s):
Springer Nature, Nature Publishing Group
Tags:
Multidisciplinary
article description
Doping is a widely applied technological process in materials science that involves incorporating atoms or ions of appropriate elements into host lattices to yield hybrid materials with desirable properties and functions. For nanocrystalline materials, doping is of fundamental importance in stabilizing a specific crystallographic phase, modifying electronic properties, modulating magnetism as well as tuning emission properties. Here we describe a material system in which doping influences the growth process to give simultaneous control over the crystallographic phase, size and optical emission properties of the resulting nanocrystals. We show that NaYF(4) nanocrystals can be rationally tuned in size (down to ten nanometres), phase (cubic or hexagonal) and upconversion emission colour (green to blue) through use of trivalent lanthanide dopant ions introduced at precisely defined concentrations. We use first-principles calculations to confirm that the influence of lanthanide doping on crystal phase and size arises from a strong dependence on the size and dipole polarizability of the substitutional dopant ion. Our results suggest that the doping-induced structural and size transition, demonstrated here in NaYF(4) upconversion nanocrystals, could be extended to other lanthanide-doped nanocrystal systems for applications ranging from luminescent biological labels to volumetric three-dimensional displays.

This article has 0 Wikipedia mention.