Enhanced photoluminescence of Nd2O3 nanoparticles modified with silane-coupling agent: Fluorescent resonance energy transfer analysis
- 26 February 2007
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 90 (9) , 091916
- https://doi.org/10.1063/1.2710479
Abstract
A liquid laser medium with a lifetime of 492 μ s and a fluorescent quantum efficiency of 52.5% has been presented by stably dispersing dimethyl dichorosilane-modified Nd 2 O 3 nanoparticles in dimethylsulfoxide. Its optical properties and mechanism were investigated and explained by fluorescence resonance energy transfer theory. The calculation result shows that the quenching of Nd III F 3 ∕ 2 4 → I 11 ∕ 2 4 transition via O–H vibrational excitation can be eventually neglected. The main reason is that the silane-coupling agent molecules remove the –OH groups on Nd 2 O 3 nanoparticles and form a protective out layer.Keywords
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