In this work, α-NaLuF4:Yb,Er (NLF) nanocomposites (NCs) and β-NLF NCs with diameter about ~13 nm were fabricated by a high temperature decomposition reaction method. The effects of NLF structure on the enhanced red upconversion luminescence performance were investigated. Under 980 nm excitation from a laser diode, the α-NLF emitted dominant red UC emission. Furthermore, the possible energy transfer mechanism was proposed on the basis of our experimental results.

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http://dx.doi.org/10.1166/jnn.2016.11868DOI Listing

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