luminescent properties of surface functionalized batio3 embedded in poly(methyl methacrylate)

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ID: 248265
2014
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Abstract
As-received BaTiO3 nanopowders of average grain sizes 50 nm and 100 nm were functionalized by (3-aminopropyl)triethoxysilane (APTES) and mixed with poly(methyl methacrylate)/toluene solution. The nanocomposite solution was spin coated on Si substrates to form thin films. The photoluminescence spectrum of the pure powder was composed of a bandgap emission at 3.0 eV and multiple bands centered about 2.5 eV. Surface functionalization of the BaTiO3 powder via APTES increases overall luminescence at room temperature while only enhancing bandgap emission at low-temperature. Polymer coating of the functionalized nanoparticles significantly enhances bandgap emissions while decreasing emissions associated with near-surface lattice distortions at 2.5 eV.
Reference Key
requena2014materialsluminescent Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Sebastian Requena;Srijan Lacoul;Yuri M. Strzhemechny
Journal Nature Materials
Year 2014
DOI
10.3390/ma7010471
URL
http://www.mdpi.com/1996-1944/7/1/471
Keywords
PMMA polymethyl methacrylate photoluminescence electronics civil engineering (general)microscopydescriptive and experimental mechanics nuclear engineeringengineering (general)

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