Bottom-Up Realization of a Type-II Organic/Transition-Metal Dichalcogenides Heterointerface: Pentacene on Monolayer WS2.
5 affiliations
- 1Department of Physics, TU Dortmund University, 44227Dortmund, Germany.
- 2Institute of Physics, NAWI Graz, University of Graz, 8010Graz, Austria.
- 3Universidad Universidad Autónoma de Madrid and IFIMAC, 28049Madrid, Spain.
- 4Institute of Solid State Physics, Friedrich Schiller University Jena, 07743Jena, Germany.
- 5Department of Electrical Engineering and Information Technology, TU Dortmund University, 44227Dortmund, Germany.
Abstract
Stacked van der Waals heterostructures based on transition-metal dichalcogenides (TMDs) exhibit a rich variety of exotic interfacial phenomena. Substituting one component with an organic semiconductor (OSC) enables the design of hybrid heterostructures with tunable functionalities for optoelectronic, photovoltaic, and spintronic applications. In this work, exploiting scanning tunneling spectroscopy (STS), photoemission orbital tomography (POT), and G0W0 electronic structure calculations, we experimentally and theoretically demonstrate the self-assembly of an ordered single layer of pentacene (5A) above monolayer WS2, exhibiting a type-II (staggered) band alignment in the hybrid 5A/WS2 interface. Central to this result is the synthesis of extended, atomically flat WS2 ─ an essential prerequisite for a highly ordered and electronically homogeneous OSC/TMD interface ─ which can only be reliably achieved via bottom-up growth, most notably molecular beam epitaxy (MBE). We realize this by leveraging Au(111) as an atomically clean and conductive sample for epitaxial growth ─ a necessary requirement for reliable and comparable STS/POT characterizations. The high quality of the synthesized heterostructure, together with its type-II band alignment, establishes pentacene/WS2 as a model system for orbital-resolved studies of charge transfer, energy-level renormalization, and nonequilibrium interfacial processes in hybrid organic/inorganic 2D heterostructures.
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BibTeX
@article{capra2026bottomup,
title = {{Bottom-Up Realization of a Type-II Organic/Transition-Metal Dichalcogenides Heterointerface: Pentacene on Monolayer WS2.}},
author = {Michele Capra and Christian S Kern and Mira S Arndt and Karl J Schiller and Max Niederreiter and Francesco Presel and Iolanda Di Bernardo and Marco Gruenewald and Torsten Fritz and Stefan Tappertzhofen and Martin Sterrer and Peter Puschnig and Mirko Cinchetti and Giovanni Zamborlini},
journal = {ACS nano},
year = {2026},
month = sep,
doi = {10.1021/acsnano.6c07654},
url = {https://europepmc.org/article/MED/42916077},
note = {CC BY},
}
RIS
TY - JOUR
TI - Bottom-Up Realization of a Type-II Organic/Transition-Metal Dichalcogenides Heterointerface: Pentacene on Monolayer WS2.
AU - Michele Capra
AU - Christian S Kern
AU - Mira S Arndt
AU - Karl J Schiller
AU - Max Niederreiter
AU - Francesco Presel
AU - Iolanda Di Bernardo
AU - Marco Gruenewald
AU - Torsten Fritz
AU - Stefan Tappertzhofen
AU - Martin Sterrer
AU - Peter Puschnig
AU - Mirko Cinchetti
AU - Giovanni Zamborlini
PY - 2026
DA - 2026/09/01
JO - ACS nano
DO - 10.1021/acsnano.6c07654
UR - https://europepmc.org/article/MED/42916077
AB - Stacked van der Waals heterostructures based on transition-metal dichalcogenides (TMDs) exhibit a rich variety of exotic interfacial phenomena. Substituting one component with an organic semiconductor (OSC) enables the design of hybrid heterostructures with tunable functionalities for optoelectronic, photovoltaic, and spintronic applications. In this work, exploiting scanning tunneling spectroscopy (STS), photoemission orbital tomography (POT), and G0W0 electronic structure calculations, we experimentally and theoretically demonstrate the self-assembly of an ordered single layer of pentacene (5A) above monolayer WS2, exhibiting a type-II (staggered) band alignment in the hybrid 5A/WS2 interface. Central to this result is the synthesis of extended, atomically flat WS2 ─ an essential prerequisite for a highly ordered and electronically homogeneous OSC/TMD interface ─ which can only be reliably achieved via bottom-up growth, most notably molecular beam epitaxy (MBE). We realize this by leveraging Au(111) as an atomically clean and conductive sample for epitaxial growth ─ a necessary requirement for reliable and comparable STS/POT characterizations. The high quality of the synthesized heterostructure, together with its type-II band alignment, establishes pentacene/WS2 as a model system for orbital-resolved studies of charge transfer, energy-level renormalization, and nonequilibrium interfacial processes in hybrid organic/inorganic 2D heterostructures.
SN - 1936-0851
SN - 1936-086X
ER -