Cathodo- and photoluminescence in Yb(3+)-Er(3+) co-doped PbF(2) nanoparticles.
We have prepared and studied the PbF(2):(Yb(3+),Er(3+)) co-doped nanoparticles, with chemical formula (Yb-Er)(x)Pb(1-x)F(2+x), where x = 0.29, Yb(3+)/Er(3+) = 6, and estimated the energy efficiency for their cathodoluminescence, mostly of Yb(3+), and up-conversion photoluminescence of Er(3+) to reach more than 0.5% and 20%, respectively, which may be the highest to date for rare-earth doped nanoparticles. Electron beam induced temperature rise in the nanoparticles has been estimated by measuring the ratio of green emission bands of Er(3+). These high efficiencies are due to high doping level of nanoparticles and due to low phonon energy of the PbF(2) host.
Tikhomirov
V K
VK
INPAC - Institute for Nanoscale Physics and Chemistry, Catholic University Leuven, Belgium. Victor.Tikhomirov@fys.kuleuven.be
Adamo
G
G
Nikolaenko
A E
AE
Rodriguez
V D
VD
Gredin
P
P
Mortier
M
M
Zheludev
N I
NI
Moshchalkov
V V
VV