Engineering of TMDC-OSC Hybrid Interfaces: The Thermodynamics of Unitary and Mixed Acene Monolayers on MoS2

Here, we use temperature-programmed desorption (TPD) and Monte Carlo (MC) simulations of TPD traces to characterize the desorption kinetics of pentacene (PEN) and perfluoropentacene (PFP) on MoS2 as a model system for OSCs on TMDCs. We show that the monolayers of PEN and PFP are thermally stabilized...

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Published inChemRxiv
Main Authors Kachel, Stefan R., Dombrowski, Pierre Martin, Breuer, Tobias, Gottfried, Michael, Witte, Gregor
Format Paper
LanguageEnglish
Edition1
Subjects
Chemistry
Interfaces
temperature programmed desorption
organic inorganic hybrids
MoS2
monolayer engineering
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Abstract Here, we use temperature-programmed desorption (TPD) and Monte Carlo (MC) simulations of TPD traces to characterize the desorption kinetics of pentacene (PEN) and perfluoropentacene (PFP) on MoS2 as a model system for OSCs on TMDCs. We show that the monolayers of PEN and PFP are thermally stabilized compared to their multilayers, which allows to prepare nominal monolayers by selective desorption of multilayers. This stabilization is, however, caused by entropy due to a high molecular mobility rather than an enhanced molecule-substrate bond. Consequently, the nominal monolayers are not densely packed films.
AbstractList Here, we use temperature-programmed desorption (TPD) and Monte Carlo (MC) simulations of TPD traces to characterize the desorption kinetics of pentacene (PEN) and perfluoropentacene (PFP) on MoS2 as a model system for OSCs on TMDCs. We show that the monolayers of PEN and PFP are thermally stabilized compared to their multilayers, which allows to prepare nominal monolayers by selective desorption of multilayers. This stabilization is, however, caused by entropy due to a high molecular mobility rather than an enhanced molecule-substrate bond. Consequently, the nominal monolayers are not densely packed films.
Author Witte, Gregor
Kachel, Stefan R.
Gottfried, Michael
Dombrowski, Pierre Martin
Breuer, Tobias
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  givenname: Stefan R.
  surname: Kachel
  fullname: Kachel, Stefan R.
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  givenname: Pierre Martin
  surname: Dombrowski
  fullname: Dombrowski, Pierre Martin
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  givenname: Tobias
  surname: Breuer
  fullname: Breuer, Tobias
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  givenname: Michael
  surname: Gottfried
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  givenname: Gregor
  orcidid: 0000-0003-2237-0953
  surname: Witte
  fullname: Witte, Gregor
  organization: Philipps-Universitaet Marburg
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Keywords temperature programmed desorption
organic inorganic hybrids
MoS2
monolayer engineering
Language English
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Snippet Here, we use temperature-programmed desorption (TPD) and Monte Carlo (MC) simulations of TPD traces to characterize the desorption kinetics of pentacene (PEN)...
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Interfaces
Title Engineering of TMDC-OSC Hybrid Interfaces: The Thermodynamics of Unitary and Mixed Acene Monolayers on MoS2
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