Enhancement of Eu3+ Emission in YVO4:Eu3+ Nanocrystals by Li+ Codoping: An Oxidant-Resistant Dispersion and Polymer Film.

ABSTRACT: The enhancement of red emission of YVO4:Eu3+ nanocrystals by Li+ codoping has been achieved. The effect of Li+ codoping on the crystalline properties and the luminescence of Eu3+ has been thoroughly studied. An increase of the unit cell volume and crystallinity of the nanocrystals is observed as the concentration of Li+ codoping increases. The lattice expansion could be related to occupation of the interstitial sites by the Li+ ions. The nanocrystals appear to be assemblies of rodlike nanostructures along with cube-shaped rough nanostructures of uniform size. The optimum concentration of Li+ codoping for luminescence enhancement is found to be 5 at. % at which Eu3+ emission is increased by about 2.5 times. The fall in Eu3+ emission after codoping of Li+ (7-15 at. %) is observed. Is it the

SUBMITTER: Ningombam GS 

PROVIDER: S-EPMC6714512 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature