Increasing X-ray to visible transduction performance of Gd2O3:Eu3+PVDF composites by PPO/POPOP addition

• Tipo: Artigo em Revista Científica Internacional
• Data: 2016

Autores

Oliveira, J (Autor) Outra; Martins, PM (Autor) Outra; Martins, P (Autor) Outra; Correia, V (Autor) Outra; Rocha, JG (Autor) Outra; Lanceros Mendez, S (Autor) Outra

Revista

Título: Composites Part B: Engineering

Vol. 91

Páginas: 610-614

ISSN: 1359-8368

Editora: Elsevier

Indexação

ISI Web of Knowledge - 6 Citações

Scopus - 9 Citações

Outras Informações

ID Authenticus: P-00K-89H

DOI: 10.1016/j.compositesb.2016.02.017

Abstract (EN): Polymer based scintillator composites have been produced by combining poly(vinylidene fluoride), PVDF, and Gd2O3:Eu3+ scintillator nanoparticles. Additionally, 2,5 dipheniloxazol (PPO) and (1,4-bis (2-(5-phenioxazolil))-benzol (POPOP) were introduced in the polymer matrix in order to improve visible light yield under x-ray irradiation. It is shown that addition of PPO and POPOP has no influence on the polymer structure, increases dielectric constant from similar to 7 to similar to 14, which is suitable for improving energy resolution, and increases in 40% the overall transduction performance of the composite without sacrificing its homogeneity and transparency. Thus, the developed Gd2O3:Eu3+/PPO/POPOP/PVDF composites are appropriate for large area X-ray radiation detectors.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 5