|approved||abstract_extended_reitboeck_osi11.pdf||2015-04-27 10:24:04||Cornelia Reitböck|
Author: Cornelia Reitböck
Requested Type: Either Oral or Poster
Submitted: 2015-04-23 03:55:31
Co-authors: E. Glowacki, N. S. Sariciftci, D. Stifter
Christian Doppler Laboratory for Microscopic and S
In this work we present at first SFG investigations by focusing on the methylene and methyl vibrational modes in the mid-infrared region (around 3000 cm-1) of n-alkyl phosphonic acid self-assembled monolayers (SAMs) deposited on aluminum oxide dielectric films. Since such SAM structures are relevant for the fabrication of advanced organic field effect transistors (OFETs), the samples were studied in terms of different chain lengths.
Additionally, we looked at the orientation behaviour of n-alkyl phosphonic acid SAMs during heating and cooling cycles in order to directly investigate the formation of a favoured and stable arrangement induced by the annealing treatment. Based on this in-situ characterisation, a better understanding of the mechanism leading to the ordering of such molecular chains can be achieved, which helps for a future optimisation of OFET structures.