Optical properties of ZnO/PMMA nanocomposite films

The ZnO nanocrystals (ZnO NCs) with particle size, less than 100 nm, have been blended with polymethylmethacrylate (PMMA) by solution mixing to prepare PMMA/ZnO nanocomposite films. The structure of ZnO/PMMA nanocomposite films was characterized using X-ray diffractometry. The prepared nanocomposite...

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Bibliographic Details
Published in:Journal of alloys and compounds 2010-07, Vol.502 (1), p.24-27
Main Authors: Kulyk, B., Kapustianyk, V., Tsybulskyy, V., Krupka, O., Sahraoui, B.
Format: Article
Language:English
Subjects:
Alloys
Chemical Sciences
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Emission
Evolution
Exact sciences and technology
Nanocomposites
Nanomaterials
Nanostructure
Optical constants: refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Optical properties of bulk materials and thin films
Photoluminescence
Physics
PMMA
Polymethyl methacrylates
Solid organic materials
Varshni formula
Zinc oxide
ZnO nanocrystals
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Summary:The ZnO nanocrystals (ZnO NCs) with particle size, less than 100 nm, have been blended with polymethylmethacrylate (PMMA) by solution mixing to prepare PMMA/ZnO nanocomposite films. The structure of ZnO/PMMA nanocomposite films was characterized using X-ray diffractometry. The prepared nanocomposite films are highly transparent and a clear excitonic peak is observed in their absorption spectra. Measurements of temperature evolution of the photoluminescence (PL) spectra show intensive UV emission peak corresponding to the donor-bound excitons with binding energy of 51 meV and green emission band related to the intrinsic defects in ZnO. The temperature evolution of the emission peaks energy position, intensity and integral intensity in ZnO/PMMA nanocomposite films were examined.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2010.04.162