Sub-10 nm BaYF5:Yb3+,Er3+ core-shell nanoparticles with intense 1.53 μm fluorescence for polymer-based waveguide amplifiers

Xuesong Zhai, Shusen Liu, Xinyang Liu, Fei Wang, Daming Zhang, Guanshi Qin, Weiping Qin

Research output: Contribution to journalArticlepeer-review

53 Scopus citations

Abstract

Sub-10 nm BaYF5:Yb3+,Er3+ core-shell nanoparticles (NPs) were synthesized by a high boiling solvent process. Under a 980 nm laser excitation, up- and down-conversion fluorescence spectra from BaYF5:Yb3+,Er3+ NPs were recorded and analyzed. After coating the active-shell (containing Yb3+ ions) around the BaYF5:Yb3+,Er3+ NPs, the intensity of the 1.53 μm fluorescent band was enhanced by 11 times owing to surface passivation effect and efficient energy transfer between Yb3+ ions in active-shell and Er3+ ions. Furthermore, the NPs showed excellent redispersibility in common nonpolar solvents. By dispersing BaYF 5:Yb3+,Er3+ active-core-active-shell NPs into an SU-8 2005 polymer, we constructed polymer-based optical waveguide amplifiers and measured their performance. For an input signal power of 0.1 mW and a pump power of 200 mW, a relative optical gain of ∼6.3 dB was obtained at 1535 nm in a 13 mm-long waveguide.

Original languageEnglish
Pages (from-to)1525-1530
Number of pages6
JournalJournal of Materials Chemistry C
Volume1
Issue number7
DOIs
StatePublished - 21 Feb 2013
Externally publishedYes

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