Conductivity of oriented bis-azo polymer films

Publication: Research - peer-reviewJournal article – Annual report year: 2006

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The conductivity properties of electro-optic photoaddressable, dense bis-ozo chromophore polymer films are investigated by using samples corona poled at various temperatures. A dielectric spectrometer is applied to measure the frequency dependence of the conductivity at different temperatures before and after heating the material to above the glass transition temperature. The results show that the orientation of the chromophores changes the charge-carrier mobility. Ionic conductivity dominates in a more disordered configuration of the material, while the competing process of hole hopping takes over as a transition to a liquid-crystalline phase occurs when the material is heated to much higher than the gloss transition temperature. Such micro-crystallization strongly enhances the conductivity.
Original languageEnglish
JournalChemPhysChem
Publication date2006
Volume7
Issue2
Pages468-474
ISSN1439-4235
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 1
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