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Film Growth, by Seeded Supersonic Beams, of Thiophene-Based Oligomers with Controlled Optical, Structural and Morphological Properties

Published online by Cambridge University Press:  21 March 2011

Tullio Toccoli ,
Maurizio Ferrari ,
Sabina Ronchin ,
Alessandro Podestà ,
Paolo Milani  and
Salvatore Iannotta
Tullio Toccoli
Affiliation:
CeFSA CNR/ITC Research Center on Aggregates Physics, Via Sommarive 18 38050 Povo di Trento, ITALY
Maurizio Ferrari
Affiliation:
CeFSA CNR/ITC Research Center on Aggregates Physics, Via Sommarive 18 38050 Povo di Trento, ITALY
Sabina Ronchin
Affiliation:
CeFSA CNR/ITC Research Center on Aggregates Physics, Via Sommarive 18 38050 Povo di Trento, ITALY
Alessandro Podestà
Affiliation:
Dipartimento di Fisica Università di Milano, Via Celoria 16 20133 Milano, ITALY
Paolo Milani
Affiliation:
Dipartimento di Fisica Università di Milano, Via Celoria 16 20133 Milano, ITALY
Salvatore Iannotta
Affiliation:
CeFSA CNR/ITC Research Center on Aggregates Physics, Via Sommarive 18 38050 Povo di Trento, ITALY
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Abstract

A novel approach for the deposition of high quality films of oligothiophenes has been developed. It is based on an original seeded supersonic molecular beam combined with a UHV deposition chamber. This method gives an unprecedented control on film properties. Several T4 films under different beams conditions have been prepared and characterized by optical absorption, photoluminescence and TMAFM. Morphology, structure and optical response are controlled by the beam's parameters. Highly ordered films, up to several hundreds of nm thick, show well resolved vibronic structures in low temperatures PL as only the best published data on films a few monolayers thick do.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 598: Symposium BB – Electrical, Optical, & Magenetic Properties...V , 1999 , BB3.18
Copyright
Copyright © Materials Research Society 1999

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