Oleic acid(OA)-modified LaF3 :Er,Yb nanocrystals and their polymer hybrid materials for potential optical-amplification applications

摘要

Oleic acid(OA)-modified LaF3 :Er,Yb nanocrystals(NCs)have been prepared and investigated.The OA-capped nanocrystals have a nearly spherical shape with a mean diameter of 7 nm and show excellent dispersibility in common organic solvents and a PMMA matrix.A 0.25 g ml-1 transparent colloidal solution in toluene can be obtained.The resulting nanocrystal-polymer hybrid materials exhibit strong emission around the 1550 nm telecommunication window when excited at 980 nm and are promising materials for polymer-based optical waveguide amplifiers.