Regensburg 2007 – wissenschaftliches Programm
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SYOE: Symposium Organic Thin Film Electronics: From Molecular Contacts to Devices
SYOE 8: Poster Session SYOE
SYOE 8.13: Poster
Dienstag, 27. März 2007, 18:00–20:00, Poster B
Chemistry and electronic properties of metal-organic semiconductor interfaces: Fe and Co on CuPc — •Victor Aristov1,2, Olga Molodtsova1, Yurii Ossipyan2, Bryan Doyle3, Stefano Nannarone3,4, and Martin Knupfer1 — 1IFW Dresden, D-01069 Dresden, Germany — 2Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow distr., 142432, Russia — 3TASC-INFM Laboratory, Area Science Park, Basovizza, I-34012 Trieste, Italy — 4Dipartimento di Ingegneria dei Materiali ed Amb., Università di Modena e Reggio Emilia
The creation of a spin transistor based on a semiconductor was proposed in 1990 by Datta and Das [1]. Nowadays the attractive idea to create a spin-transistor based on an organic semiconductor thin film (OMTF) has been proposed. The main problem in the development of such a device is to produce ferromagnetic metallic contacts as an injector of spin-polarized electrons into OMTF and as a drain of these spin-polarized electrons from the channel. This problem could be solved by fabrication and investigation of contacts such as Fe (Co, Ni) thin films to an OMTF. In this contribution we present the results of extensive investigations of chemistry and electronic properties of the interface formation between Fe(Co) and the archetypical organic semiconductor copper phthalocyanine (CuPc). The studies were performed by means of core-level and valence-band high-resolution photoemission electron spectroscopy as well as by near-edge x-ray absorption fine structure and using the synchrotron radiation facility ELETTRA (Italy). [1] S. Datta and B. Das, Appl. Phys. Lett. 56, 665 (1990).