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Proceedings Paper

High-quality a-oligothiophene films grown by supersonic seeded beams: optical, morphological, and structural characterization
Author(s): Salvatore Iannotta; Tullio Toccoli; Maurizio Ferrari; Stefania Ronchin; Alessandro Podesta; Paolo Milani; Paolo Scardi
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Paper Abstract

A novel approach to the deposition of high quality films of oligothiophenes has been developed. It is based on an original seeded supersonic molecular beam combined with an ultra high vacuum deposition chamber. This method gives an unprecedented control on film properties. Several quaterthiophene films under different beam conditions have been prepared and characterized by optical absorption, photoluminescence, tapping mode atomic force microscopy, secondary electron microscopy and x-ray diffraction. Morphology, structure and optical response are controlled by the beams' parameters. Highly ordered films, up to several hundreds of nm thick, show well resolved vibronic structures in low temperatures fluorescence spectra as only the best published data on films a few monolayers thick do.

Paper Details

Date Published: 19 May 2000
PDF: 8 pages
Proc. SPIE 3939, Organic Photonic Materials and Devices II, (19 May 2000); doi: 10.1117/12.386368
Show Author Affiliations
Salvatore Iannotta, Ctr. di Fisica degli Studi Aggregati/CNR-ITC (Italy)
Tullio Toccoli, Ctr. di Fisica degli Studi Aggregati/CNR-ITC (Italy)
Maurizio Ferrari, Ctr. di Fisica degli Studi Aggregati/CNR-ITC (Italy)
Stefania Ronchin, Ctr. di Fisica degli Studi Aggregati/CNR-ITC (Italy)
Alessandro Podesta, INFM/Univ. di Milano (Italy)
Paolo Milani, INFM/Univ. di Milano (Italy)
Paolo Scardi, Univ. di Trento (Italy)

Published in SPIE Proceedings Vol. 3939:
Organic Photonic Materials and Devices II
Donal D. C. Bradley; Bernard Kippelen, Editor(s)

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