Phase-sensitive surface X-ray scattering study of a crystalline organic–organic heterostructure

An X-ray study of a crystalline organic–organic heterostructure, consisting of a film of PTCDA (3,4,9,10-perylenetetracarboxylic dianhydride) grown on a self-assembled monolayer (SAM) of decanethiol on Au(1 1 1), is presented. The sandwich structure acts as a “molecular interferometer”, where the in...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2000-06, Vol.283 (1), p.75-78
Main Authors: Schreiber, F, Gerstenberg, M.C, Edinger, B, Toperverg, B, Forrest, S.R, Scoles, G, Dosch, H
Format: Article
Language:English
Subjects:
Interference effects
Organic films
Surface scattering
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Summary:An X-ray study of a crystalline organic–organic heterostructure, consisting of a film of PTCDA (3,4,9,10-perylenetetracarboxylic dianhydride) grown on a self-assembled monolayer (SAM) of decanethiol on Au(1 1 1), is presented. The sandwich structure acts as a “molecular interferometer”, where the interference between the Laue function of the PTCDA film and the crystal truncation rod (CTR) of the substrate is governed by the SAM spacer thickness, d 0. A pronounced destructive interference feature is observed, which allows the determination of d 0 with great sensitivity.
ISSN:0921-4526
1873-2135
DOI:10.1016/S0921-4526(99)01895-5