Photophysics of Pentacene-Doped Picene Thin Films

Tullio Toccoli, Paolo Bettotti, Antonio Cassinese, Stefano Gottardi, Yoshihiro Kubozono, Maria Antonietta Loi, Marianna Manca, Roberto Verucchi

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Here were report a study of picene nano-cristalline thin films doped with pentacene molecules. The thin films were grown by supersonic molecular beam deposition with a doping concentration that ranges between less than one molecules of pentacene every 10000 picene molecules up to about one molecule of pentacene every 100 of picene. Morphology and opto-electronic properties of the films were studied as a function of the concentration of dopants. The optical response of the picene films, characterized by absorption, steady-state and time-resolved photoluminescence measurements, changes dramatically after the doping with pentacene. An efficient energy transfer from the picene host matrix to the pentacene guest molecules was observed giving rise to an intense photoluminescence coming out from pentacene. This efficient mechanism opens the possibility to exploit applications where the excitonic states of the guest component, pentacene, are of major interest such as MASER. The observed mechanism could also serve as prototypical system for the study of the photophysics of host guest systems based on different phenacenes and acenes.

Original languageEnglish
JournalJournal of Physical Chemistry C
DOIs
Publication statusAccepted/In press - Mar 29 2018

Fingerprint

Thin films
Molecules
thin films
Doping (additives)
molecules
Photoluminescence
photoluminescence
Molecular beams
Electronic properties
Energy transfer
molecular beams
energy transfer
pentacene
picene
matrices
electronics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

Cite this

Toccoli, T., Bettotti, P., Cassinese, A., Gottardi, S., Kubozono, Y., Loi, M. A., ... Verucchi, R. (Accepted/In press). Photophysics of Pentacene-Doped Picene Thin Films. Journal of Physical Chemistry C. https://doi.org/10.1021/acs.jpcc.8b02978

Photophysics of Pentacene-Doped Picene Thin Films. / Toccoli, Tullio; Bettotti, Paolo; Cassinese, Antonio; Gottardi, Stefano; Kubozono, Yoshihiro; Loi, Maria Antonietta; Manca, Marianna; Verucchi, Roberto.

In: Journal of Physical Chemistry C, 29.03.2018.

Research output: Contribution to journalArticle

Toccoli, T, Bettotti, P, Cassinese, A, Gottardi, S, Kubozono, Y, Loi, MA, Manca, M & Verucchi, R 2018, 'Photophysics of Pentacene-Doped Picene Thin Films', Journal of Physical Chemistry C. https://doi.org/10.1021/acs.jpcc.8b02978
Toccoli, Tullio ; Bettotti, Paolo ; Cassinese, Antonio ; Gottardi, Stefano ; Kubozono, Yoshihiro ; Loi, Maria Antonietta ; Manca, Marianna ; Verucchi, Roberto. / Photophysics of Pentacene-Doped Picene Thin Films. In: Journal of Physical Chemistry C. 2018.
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