FT-IR absorption spectra of polycrystalline pressed samples of the organic metals and superconductors α-, β-(BEDT-TTF)2I3 and (BEDT-TTF)2Cu(NCS)2

Abstract

IR absorption spectra of polycrystalline pressed samples of the organic metals α-(BEDT- TTF)2I3, β-(BEDT-TTF)2I3 and (BEDT-TTF)Cu(NCS) are presented and discussed. Normal prononated as well as deuterated materials were studied. The spectra range from 400 cm-1 to 5000 cm-1 and are similar to the IR reflectance spectra reported earlier. The data are of special interest in view of the fact that recently bulk superconductivity was observed in such polycrystalline samples of organic metals, and therefore the application of organic superconductors for the preparation of electronic devices seems possible.