Evidence for phase formation in potassium intercalated 1,2;8,9-dibenzopentacene
IFW Dresden, P.O. Box 270116, 01171
Received: 20 March 2012
Received in final form: 31 May 2012
Published online: 16 July 2012
We have prepared potassium intercalated 1,2;8,9-dibenzopentacene films under vacuum conditions. The evolution of the electronic excitation spectra upon potassium addition as measured using electron energy-loss spectroscopy clearly indicate the formation of particular doped phases with compositions Kxdibenzopentacene (x = 1, 2, 3). Moreover, the stability of these phases as a function of temperature has been explored. Finally, the electronic excitation spectra also give insight into the electronic ground state of the potassium doped 1,2;8,9-dibenzopentacene films.
Key words: Solid State and Materials
© EDP Sciences, Società Italiana di Fisica and Springer-Verlag, 2012