%0 Journal Article
%T Evidence for phase formation in potassium intercalated 1,2;8,9-dibenzopentacene
%A Friedrich Roth
%A Andreas KŁżnig
%A Benjamin Mahns
%A Bernd B¨ąchner
%A Martin Knupfer
%J Physics
%D 2012
%I arXiv
%R 10.1140/epjb/e2012-30247-3
%X 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 K$_x$dibenzopentacene ($x$ = 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.
%U http://arxiv.org/abs/1206.0526v1