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Surface morphology studies of phthalocyanine thin films: mechanism of the α → β1 phase transition

Published online by Cambridge University Press:  14 March 2011

Sandrine Heutz ,
Sallie M. Bayliss ,
Garry Rumbles  and
Tim S. Jones
Sandrine Heutz
Affiliation:
Centre for Electronic Materials and Devices and Department of Chemistry, Imperial College, London SW7 2AY, United Kingdom
Sallie M. Bayliss
Affiliation:
Centre for Electronic Materials and Devices and Department of Chemistry, Imperial College, London SW7 2AY, United Kingdom
Garry Rumbles
Affiliation:
Centre for Electronic Materials and Devices and Department of Chemistry, Imperial College, London SW7 2AY, United Kingdom
Tim S. Jones
Affiliation:
Centre for Electronic Materials and Devices and Department of Chemistry, Imperial College, London SW7 2AY, United Kingdom
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Abstract

Free base phthalocyanine films have been grown on glass substrates by organic molecular beam deposition. In situ post-growth annealing of the samples leads to the α → β1 transformation. Different transition states have been identified and their morphological properties studied by atomic force and optical microscopy. The transition occurs via a discrete number of nucleations and is preceded by an elongation of the α crystallites. The β1 crystallites grow but are confined to domains of similar orientation. Increased thickness produces larger domains and better orientation, while only partial transformation occurs below 94 nm.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 620: Symposium M – Morphology & Dynamics of Crystal Surfaces in Complex… , 2000 , M3.5.1
Copyright
Copyright © Materials Research Society 2000

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References

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