Publicação
Increasing X-ray to visible transduction performance of Gd2O3:Eu3+PVDF composites by PPO/POPOP addition
| Resumo: | 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 ~7 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. |
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| Autores principais: | Oliveira, J. |
| Outros Autores: | Martins, P.M.; Martins, P.; Correia, V.; Rocha, J. G.; Lanceros-Méndez, S. |
| Assunto: | A. Polymer-matrix composites (PMCs) B. Electrical properties B. Optical properties/techniques E. Casting Polymer-matrix composites (PMCs) Electrical properties Optical properties/techniques Casting |
| Ano: | 2016 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso restrito |
| Instituição associada: | Universidade do Minho |
| Idioma: | inglês |
| Origem: | RepositóriUM - Universidade do Minho |
| Resumo: | 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 ~7 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. |
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