Structure of sub-monolayer deuterated pentacene islands on exfoliated graphite studied with neutron surface diffraction
Organic thin films such as pentacene (C22H14) films are promising systems for the development of novel electronic devices. However, the electrical properties of the resulting devices are limited by the quality of the films, which strongly depends on the growth process. It is of particular importance to understand the interplay between the dynamics of the organic molecules on the substrate and the structure of the resulting aggregates, above all in the early stages of the film deposition. In this perspective experiments which link structure and dynamics of pentacene on technologically relevant substrates, such as graphite, are essential to set the most favorable conditions for growing epitaxially ordered organic films. In the present experiment we propose to observe with neutron diffraction the structure of pentacene islands in the same range of coverages and temperatures at which dynamics experiments of neutron and helium atom spin-echo spectroscopy will be performed.
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CALVO ALMAZAN Irene; ALLISON W.; CUELLO Gabriel; FOUQUET Peter; HANUSOVA Kristyna; HEDGELAND Holly and KOHOUT Michal. (2015). Structure of sub-monolayer deuterated pentacene islands on exfoliated graphite studied with neutron surface diffraction. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-21-1088
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