Abstract
This article presents a study on cathodoluminescence (CL) of different space-used fluoropolymers, such as polytetrafluoroethylene (PTFE), fluorinated ethylene propylene (FEP), and ethylene tetrafluoroethylene (ETFE). This experimental technique allows highlighting radiative energy transitions under electron irradiation and degradation mechanisms under high radiation doses. Samples were irradiated with an electron beam (10 keV–1 <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\mu$</tex-math> </inline-formula> A) under vacuum (10 <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$^{-6}$</tex-math> </inline-formula> mbar). A parametric study has been performed to analyze especially the effect of temperature and the injected radiation dose on the CL spectra of these different polymers. The CL spectrum for these three materials is composed of three elementary contributions at 2.2, 2.4, and 3.75 eV, each of them being associated with specific processes in relation to different chromophores present in the materials or generated by electronic irradiation. A decline in the amplitude of the CL spectra with the increasing temperature or accumulated radiation dose has been observed on these fluoropolymers.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
