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In-situ GISAXS on Nanocomposite Films of CdS Nanoparticles and Polymers

Published online by Cambridge University Press:  01 February 2011

Tiziana Di Luccio
Affiliation:
tiziana.diluccio@portici.enea.it, ENEA, FIM-MATNANO, Via Vecchio Macello, Portici, 80055, Italy, +390817723244, +390817723344
Dina Carbone
Affiliation:
gcarbone@esrf.fr, European Synchrotron Radiation Facility (ESRF), 6 rue Jules Horowitz, Grenoble, 38000, France
Anna Maria Laera
Affiliation:
anna.laera@brindisi.enea.it, Italian National Agency for New Technologies, Energy and the Environment (ENEA), FIM-MATCOMP, Strada Statale 7 Appia, Brindisi, 72100, Italy
Katrin Peeper
Affiliation:
Katrin.Peeper@physic.uni-muenchen.de, Photonics and Optoelectronis Group, Dep. of Physics and CeNS Ludwig-Maximilians-Universitaet, Amalienstr. 54, Munich, 80799, Germany
Christian Mauser
Affiliation:
Christian.Mauser@physik.uni-muenchen.de, Photonics and Optoelectronis Group, Dep. of Physics and CeNS Ludwig-Maximilians-Universitaet, Amalienstr. 54, Munich, 80799, Germany
Enrico Da Como
Affiliation:
Enrico.Dacomo@uni-muenchen.de, Photonics and Optoelectronis Group, Dep. of Physics and CeNS Ludwig-Maximilians-Universitaet, Amalienstr. 54, Munich, 80799, Germany
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Abstract

We investigated the growth of CdS nanoparticles in polymer films by means of ex-situ and in-situ x-ray scattering experiments using synchrotron radiation. The CdS nanoparticles were synthesized by thermal decomposition of a Cd thiolate precursor dispersed in a cyclic olefin copolymer. The films were deposited by spin coating. Grazing incidence diffraction (GID) reveals the Bragg reflections of the CdS nanoparticles. In-situ diffraction and grazing incidence small angle scattering (GISAXS) experiments were recorded during the thermal treatment of the precursor/polymer films from room temperature up to 250°C. The diffraction curves show that the initial precursor structure is soon lost at 100°C. Correspondingly, the GISAXS data show a peak at a momentum transfer value q ∼ 0.2Å−1 that shifts towards smaller values with the temperature. Under UV excitation the films show photoluminescence in the range 400 – 700 nm.

Type
Research Article
Copyright
Copyright © Materials Research Society 2008

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