Blue, green, and red upconversion emission from lanthanide-doped LuPO4 and YbPO4 nanocrystals in a transparent colloidal solution.
Heer
Stephan
S
Department of Chemistry and Biochemistry, University of Bern, 3000 Bern 9, Switzerland.
Lehmann
Olaf
O
Haase
Markus
M
Güdel
Hans-Ulrich
HU