Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/38749

TitleGd2O3: Eu Nanoparticle-Based Poly(vinylidene fluoride) Composites for Indirect X-ray Detection
Author(s)Martins, P. M.
Martins, Pedro Libânio Abreu
Correia, V.
Rocha, J. G.
Lanceros-Méndez, S.
KeywordsX-ray
Scintillator
PVDF
Gd2O3-Eu
Composites
Gd O -Eu 2 3
Issue date2015
PublisherIEEE
JournalJournal of Electronic Materials
CitationMartins, P. M., Martins, P., Correia, V., Rocha, J. G., & Lanceros-Mendez, S. (2015). Gd2O3:Eu Nanoparticle-Based Poly(vinylidene fluoride) Composites for Indirect X-ray Detection. Journal of Electronic Materials, 44(1), 129-135. doi: 10.1007/s11664-014-3407-8
Abstract(s)Polymer based scintillator composites have been fabricated by combining poly(vinylidene fluoride) (PVDF) and Gd2O3:Eu nanoparticles (50nm). PVDF has been used since it is a flexible and stable binder matrix and highly resistance to thermal and light deterioration. Gd2O3:Eu has been selected as scintillator material due to its wide band gap, high density and suitable visible light yield. The structural, mechanical, thermal and electrical characteristics of the composites were studied as a function of filler content, together with their performance as scintillator material. The introduction of Gd2O3:Eu nanoparticles into the PVDF matrix does not influence the morphology of the polymer or the degree of crystallinity. On the other hand, an increase of the Young´s modulus with respect to PVDF matrix is observed for filler contents of 0.1-0.75 wt.%. The introduction of Gd2O3:Eu into the PVDF matrix increases dielectric constant and DC electrical conductivity as well as the visible light yield in the nanocomposite, being this increase dependent upon Gd2O3:Eu content and X-ray input power. In this way, Gd2O3:Eu/PVDF composites shows suitable characteristics to be used as X-ray radiation transducers, in particular for large area applications.
TypeArticle
URIhttp://hdl.handle.net/1822/38749
DOI10.1007/s11664-014-3407-8
ISSN0361-5235
1543-186X
Peer-Reviewedyes
AccessRestricted access (UMinho)
Appears in Collections:CAlg - Artigos em revistas internacionais/Papers in international journals
CDF - FCD - Artigos/Papers (with refereeing)

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