Berlin 2015 – wissenschaftliches Programm
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DS: Fachverband Dünne Schichten
DS 3: Organic Thin Films
DS 3.9: Vortrag
Montag, 16. März 2015, 17:30–17:45, H 2032
Magnetic transition metal phthalocyanine thin films: morphology, ordering, electronic structure and tuning of electronic properties via alkali metal doping — •Olga Molodtsova1, Sergey Babenkov1, Karina Schulte2, Volodymyr Maslyuk3, Ingrid Mertig3, Thomas Bredow4, and Victor Aristov1,5,6 — 1DESY Hamburg, Germany — 2MAX-lab Lund, Sweden — 3Uni Halle, Germany — 4Uni Bonn, Germany — 5Uni Hamburg, Germany — 6ISSP RAS, Russia
Magnetic transition metal phthalocyanines (MTM-Pc*s) are considered as materials for development of low dimensional molecular magnets, quantum computers and hybrid systems for memory devices. To make further progress in development such devices both the understanding and the tailoring of the physical, chemical and transport properties of the organic semiconductor components are required. The evolution of electronic structure of the MTM-Pc*s intrinsic and with potassium doping has been studied by means of photoemission spectroscopy, near-edge X-ray absorption fine structure and DFT calculations. The DFT calculations and detailed analysis of the core-level spectra permit us to suggest possible lattice sites for the potassium ions. The data disclosed filling of the lowest unoccupied molecular orbital upon doping and associated changes of the core level absorption spectra. None of the films prepared in our studies showed a finite electronic density of states at the Fermi level. Acknowledgements: This work was supported by the RFBR Grant No. 13 -02-00818 and the BMBF-Project No. 05K12GU2, PSP-Element No. U4606BMB1211