The electronic properties of potassium doped copper-phthalocyanine studied by electron energy-loss spectroscopy

Abstract

The authors have studied the electronic structure of potassium doped copper-phthalocyanine using electron energy-loss spectroscopy. The evolution of the loss function indicates the formation of distinct Kx CuPc phases. Taking into account the C1s and K2p core level excitations and recent results by Giovanelli [J. Chem. Phys. 126, 044709 (2007)], they conclude that these are K2 CuPc and K4 CuPc. They discuss the changes in the electronic excitations upon doping on the basis of the molecular electronic levels and the presence of electronic correlations. © 2007 American Institute of Physics.