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Polymorphism and phase control in titanyl phthalocyanine thin films grown by supersonic molecular beam deposition (Articolo in rivista)

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Polymorphism and phase control in titanyl phthalocyanine thin films grown by supersonic molecular beam deposition (Articolo in rivista) (literal)

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Coppedè N. a; Toccoli T. a; Pallaoro A. a; Siviero F. a; Walzer K. b; Castriota M. c; Cazzanelli E. c; Iannotta S. a (2007)
Polymorphism and phase control in titanyl phthalocyanine thin films grown by supersonic molecular beam deposition
in The journal of physical chemistry. A; ACS, American chemical society, Washington, DC (Stati Uniti d'America)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Coppedè N. a; Toccoli T. a; Pallaoro A. a; Siviero F. a; Walzer K. b; Castriota M. c; Cazzanelli E. c; Iannotta S. a (literal)

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a CNR/FBK Trento Division, Institute of Photonics and Nanotechnology, Via alia Cascata 56/C, Povo 38100 (TN), Italy; b Institut fuer Angewandte Photophysik, George-Bähr-Strasse 1, 01069 Dresden, Germany; c LICRYL-INFM Laboratory-CEMIF. CAL, Department of Physics, University of Calabria, Via P. Bucci, Cubo 33B, 87036 Arcavacata da Rende (CS), Italy (literal)

Titolo

Polymorphism and phase control in titanyl phthalocyanine thin films grown by supersonic molecular beam deposition (literal)

Abstract

Polymorphism in the growth of titanyl phthalocyanine films on dielectric substrates has been systematically studied by UV absorption and micro-Raman analyses, correlating structure and optical properties. We explored different growth regimes as a function of substrate temperature and growth rate using hyperthermal seeded supersonic beams. We identify and discuss specific signatures in micro-Raman spectra specifically correlated to the different phases and demonstrate the unprecedented ability of growing crystalline films and controlling the relative abundance of the different phases (amorphous, phase I, and phase II) by the beam parameters. We envisage the very promising perspective of controlling polymorphism at low temperatures via supersonic beam growth, paving the way for better performing devices. (literal)

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