The morphology and structure of vanadyl phthalocyanine thin films on lithium niobate single crystals

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Title: The morphology and structure of vanadyl phthalocyanine thin films on lithium niobate single crystals
Authors: Ramadan, AJ
Rochford, LA
Moffat, J
Mulcahy, C
Ryan, MP
Jones, TS
Heutz, S
Item Type: Journal Article
Abstract: The electric field of ferroelectric materials has been used as a driving force to promote molecular adsorption and control the orientation of small dipolar molecules. This approach has not been investigated on larger polyaromatic molecules, such as those used in organic electronic devices, even though the physical and electronic properties of thin films are strongly dependent on molecular structure and orientation, ultimately affecting device performance. Here we investigate the effects of model ferroelectric surfaces on a dipolar organic semiconducting molecule. Thin films of vanadyl phthalocyanine (VOPc) deposited on to (0001) and (2[1 with combining macron][1 with combining macron]0) lithium niobate were subjected to structural and morphological analysis. Whilst thin films could be grown on these surfaces, no obvious change to their structure or morphology was observed suggesting there was no influence of a surface electrical field or surface chemistry on the film structure, and that the substrate is more complex than previously thought.
Issue Date: 7-Dec-2015
Date of Acceptance: 4-Dec-2015
ISSN: 2050-7534
Publisher: Royal Society of Chemistry
Start Page: 348
End Page: 351
Journal / Book Title: Journal of Materials Chemistry C
Volume: 4
Issue: 2
Copyright Statement: This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
Engineering & Physical Science Research Council (EPSRC)
Funder's Grant Number: EP/F039948/1
Keywords: Science & Technology
Physical Sciences
Materials Science, Multidisciplinary
Physics, Applied
Materials Science
Publication Status: Published
Appears in Collections:Faculty of Engineering
Faculty of Natural Sciences

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