We have studied the electronic structure of potassium-doped copper phthalocyanine (CuPc) using photoemission spectroscopy. A detailed analysis of the core-level spectra allows us to propose possible lattice sites for the potassium ions. None of the films prepared in our studies showed a finite electronic density of states at the Fermi level (EF), which is in contrast to reports in the literature. Possible reasons for this discrepancy are discussed.
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Молодцова et al. (2005) studied this question.
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