Optical Absorption of Polymer Films Doped with BEDT-TTF Polyiodides |
| H.W. Helberg, D. Staerk Third Physical Institute, University of Göttingen, D-37073 Göttingen, Germany J. Ulański Polymer Institute, Technical University of Łódź, Żwirki 36, 90-924 Łódź, Poland and J.K. Jeszka Center of Molecular and Macromolecular Studies, Sienkiewicza 112, 90-363 Łódź, Poland |
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| Conducting reticulate doped polymeric films containing BEDT-TTF iodide crystalline network were annealed in order to transform the crystallites into crystal phases with metallic conductivity. Measured optical absorption spectra show that annealing shifts the absorption band to higher frequencies and increases the transparency of the films. This behavior corresponds to the transformation of the α-phase into the superconducting αt-phase observed in (BEDT-TTF)2I3 single crystals. |
| DOI: 10.12693/APhysPolA.87.893 PACS numbers: 78.40.Ha, 78.30.Jw, 74.70.Kn |