Preparation of high-quality organic films by deposition and co-deposition via supersonic seeded beams

Tullio Toccoli; Andrea Boschetti; Claudio Corradi; Maurizio Mazzola; Paolo Milani; Alessandro Podesta; Salvatore Iannotta

doi:10.1117/12.429377

15 June 2001 Preparation of high-quality organic films by deposition and co-deposition via supersonic seeded beams

Tullio Toccoli, Andrea Boschetti, Claudio Corradi, Maurizio Mazzola, Paolo Milani, Alessandro Podesta, Salvatore Iannotta

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Proceedings Volume 4279, Organic Photonic Materials and Devices III; (2001) https://doi.org/10.1117/12.429377
Event: Symposium on Integrated Optics, 2001, San Jose, CA, United States

Abstract

Recent results obtained in the growth of organic materials by supersonic molecular beams (SuMBE) are presented. Compared to other vacuum deposition methods, it allows an accurate control on the initial state (kinetic energy, momentum, flux, etc.) of the molecules during the deposition process. We show that such feature can be efficiently exploited to prepare films, the structure and morphology of which resemble those single crystals, therefore achieving unprecedented control on their optical and electronic properties even for relatively thick samples (> 500 nm). We also report on the use of SuMBE for processes of co-deposition with the aim of functionalizing or doping organic semiconductors. We achieved co-depositions of a p-type semiconductor, as metal phthalocyanines, with an n- type semiconductor, as fullerenes, without phase segregation between the two compounds and with a high control on the deposition parameters. This aspect is very attractive for the growth of organic p-n junction in view of improving photovoltaic cells and gas sensors.

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Tullio Toccoli, Andrea Boschetti, Claudio Corradi, Maurizio Mazzola, Paolo Milani, Alessandro Podesta, and Salvatore Iannotta "Preparation of high-quality organic films by deposition and co-deposition via supersonic seeded beams", Proc. SPIE 4279, Organic Photonic Materials and Devices III, (15 June 2001); https://doi.org/10.1117/12.429377

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KEYWORDS

Molecules

Fullerenes

Control systems

Crystals

Molecular beams

Atomic force microscopy

Molecular beam epitaxy

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