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.
Journal of Applied Physics
- Pub Date:
- November 2005
- Surface states band structure electron density of states;
- Polymers and organic compounds;
- Doping and impurity implantation in other materials;
- organic compounds