Synthesis and Characterization of NIR Luminescent LaF₃:Ln³⁺ Nanoparticles and their Transparent Epoxy Nanocomposites

Abstract:

Near infrared (NIR) emitting LaF₃:Ln³⁺ (Ln^3+→Nd³⁺, Er³⁺, Yb³⁺ and Ho³⁺) singly doped nanoparticles (NPs), with an average size of 5 nm, have been synthesized using simple co-precipitation route. Nanoparticles were functionalized with oleic acid. FTIR spectra revealed the prescience of chemisorbed oleic acid on the surface of nanoparticles. 10 wt % of LaF₃:Nd³⁺ nanoparticles were incorporated into epoxy by solution mixing method. The LaF₃:Nd³⁺-Epoxy Nanocomposites showed good transparency along with prominent NIR emissions at 880 nm, 1053 nm and 1330 nm on excitation at 575 nm.

• Periodical: Advanced Materials Research (Volume 748)
• Pages: 101-105
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.748.101
• Online since: August 2013
• Authors: Pramod K. Nampoothiri, Mayuri N. Gandhi, A.R. Kulkarni
• Keywords: Concentration Quenching, Epoxy, Lanthanide, Nanocomposite, NIR Luminescence

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