Nowadays one has a very attractive idea to create a spin-transistor based on an organic semiconductor (OMTF). The main problem in the development of such device is to create the 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 such contacts as Fe(Co,Ni) thin films to an OMTF. Among OMTF the archetypical organic semiconductor copper phthalocyanine (CuPc) is a good candidate for creation of an organic based spin-transistor, because CuPc thin film can be easily prepared as a well ordered, chemically and thermally stable film of high purity with high electron mobility (ca. 0.01-0.02 cm2/Vs) [1].
In this contribution we present the results of extensive investigations of chemistry and electronic properties of interface fabricated at Fe(Co) deposition onto thin film of copper phthalocyanine. 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 method and using synchrotron radiation facility (ELETTRA, Italy).
Acknowledgements:
This work was supported by the DFG under grants no. KN393/5 and 436RUS17/52/06. Two of the authors (V.M.Z & V.Y.A) thank the RFBR (Grant No 05-02-17390).
References:
[1] Z. Bao, A.J. Lovinger, and A. Dodabalapur, Appl. Phys. Lett. 69 (1996) 3066.
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