Friday, August 7, 2009, 11:00 am — Bldg 735, Conference Room B, CFN
Organic semiconductors have been attracting much attention due to their application in organic electronic devices, such as organic light-emitting diodes and organic field-effect transistors [1,2]. For the performance of organic semiconducting devices the charge injection at the contacting interface, which depends on the morphology of the metallic contact and the packing of the first molecular layers, plays a crucial role [3]. Pentacene with its high charge carrier mobility and conductivity is one of the most promising organic semiconductors [4]. The electronic interactions of pentacene molecules with the Cu(110) as well as with the oxidized Cu(110) surface have been investigated by complementary analysing techniques comprising scanning tunnelling microscopy, low energy electron diffraction, x-ray photoelectron spectroscopy and angle-resolved ultraviolet photoelectron spectroscopy together with ab-initio calculations.
[1] G. Horowitz, Adv. Mater. 10, 365 (1998).
[2] B. Crone, A. Dodabalapur, Y.-Y-Lin, R. W. Filas, Z. Bao, A. LaDuca, R. Sarpeshkar, H. E. Katz, W. Li, Nature 403, 521 (2000).
[3] S. Y. Yang, K. Shin, C. C. Park, Adv. Funct. Mater. 2005, 15, 1806
[4] M. Daraktchiev, A. von Mühlenen, F. Nüesch, M. Schaer. M. Brinkmann, M-N. Bussac, L. Zuppiroli, N. J. Phys. 2005, 7, 133
Hosted by: David Starr
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