EVOLUTION WITH TIME OF PROPERTIES OF THE POLYTETRABROMO-P-PHENYLENEDISELENIDE DOPED WITH AN HALOGEN (CL OR I)

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dc.contributor.authorBERNEDE, JC
dc.contributor.authorGODOY, A
dc.contributor.authorMOLINIE, P
dc.contributor.authorSAFOULA, G
dc.contributor.authorMHARZI, H
dc.contributor.authorDIAZ, F
dc.contributor.authorCONAN, A
dc.date.accessioned2024-01-10T12:05:21Z
dc.date.available2024-01-10T12:05:21Z
dc.date.issued1994
dc.description.abstractPBrPDSe has been doped by chlorine or iodine. The samples have been studied by X ray photoelectron spectroscopy (XPS), electron spin resonance (E.S.R.) and with a scanning electron microscope equiped with an electronic microprobe. Conductivity measurements have also been performed on pressed pellet samples.
dc.description.abstractIn the case of chlorine doped polymer, it is shown by XPS study that chlorine decomposes progressively the polymer. This result is corrobored by ESR study.
dc.description.abstractThe conductivity of the I2 doped PBrPDSe exhibits an increase by about three orders of magnitude. The doping concentration decreases with time from 30 at % to 5 at % but the ESR signal stays the same. The high value of g anisotropy and the XPS peak of Se show that the positive charge is localized on the Se atoms. The binding energy of the iodine anion corresponds to I5- species after doping and to I3- thirteen months later.
dc.description.abstractAll these results can be explained by the reaction I5- --> I2 + I3-.
dc.description.abstractThe I2 removing explains the decrease of the iodine concentration and the I3- formation explains the stability of the ESR signal. The microphotographs show that the surface of the fibrils of iodine doped powder become rough with time this may be explained by I2 removing and surface modification.
dc.description.abstractThese modifications can explain the decrease with time of the conductivity.
dc.fechaingreso.objetodigital2024-05-02
dc.format.extent16 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1051/jcp/1994911567
dc.identifier.issn0021-7689
dc.identifier.urihttps://doi.org/10.1051/jcp/1994911567
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/75993
dc.identifier.wosidWOS:A1994PM30800008
dc.information.autorucQuímica;Diaz F;S/I;98205
dc.issue.numero10
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final1582
dc.pagina.inicio1567
dc.publisherEDITIONS SCIENTIFIQUES ELSEVIER
dc.revistaJOURNAL DE CHIMIE PHYSIQUE ET DE PHYSICO-CHIMIE BIOLOGIQUE
dc.rightsacceso restringido
dc.subjectSEMICONDUCTING POLYMERS
dc.subjectX-RAY PHOTOELECTRON SPECTROSCOPY
dc.subjectELECTRON SPIN RESONANCE
dc.subjectSCANNING ELECTRON MICROSCOPY
dc.subjectMICROPROBE ANALYSIS
dc.subjectHALOGEN DOPANT
dc.subjectCONDUCTIVITY
dc.subjectEVOLUTION WITH TIME
dc.subjectSEMICONDUCTING POLYMERS
dc.subjectPOLY(TETRAHALO-P-PHENYLENESELENIDE)S
dc.subjectFILMS
dc.titleEVOLUTION WITH TIME OF PROPERTIES OF THE POLYTETRABROMO-P-PHENYLENEDISELENIDE DOPED WITH AN HALOGEN (CL OR I)
dc.typeartículo
dc.volumen91
sipa.codpersvinculados98205
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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