Electronic Properties of Tetraazaperopyrene Derivatives on Au(111): Energy-Level Alignment and Interfacial Band Formation [research data]

DOI

N-heteropolycyclic aromatic compounds are promising organic electron-transporting semiconductors for applications in field-effect transistors. Here, we investigated the electronic properties of 1,3,8,10-tetraazaperopyrene derivatives adsorbed on Au(111) using a complementary experimental approach, namely, scanning tunneling spectroscopy and two-photon photoemission combined with state-of-the-art density functional theory. We find signatures of weak physisorption of the molecular layers, such as the absence of charge transfer, a nearly unperturbed surface state, and an intact herringbone reconstruction underneath the molecular layer. Interestingly, molecular states in the energy region of the sp- and d-bands of the Au(111) substrate exhibit hole-like dispersive character. We ascribe this band character to hybridization with the delocalized states of the substrate. We suggest that such bands, which leave the molecular frontier orbitals largely unperturbed, are a promising lead for the design of organic–metal interfaces with a low charge injection barrier.

Identifier
DOI https://doi.org/10.11588/data/0EK2MB
Related Identifier https://doi.org/10.1021/acs.jpcc.1c04217
Metadata Access https://heidata.uni-heidelberg.de/oai?verb=GetRecord&metadataPrefix=oai_datacite&identifier=doi:10.11588/data/0EK2MB
Provenance
Creator Stein, Arnulf; Rolf, Daniela; Lotze, Christian ORCID logo; Feldmann, Sascha ORCID logo; Gerbert, David; Günther, Benjamin; Jeindl, Andreas ORCID logo; Cartus, Johannes J. ORCID logo; Hofmann, Oliver T. ORCID logo; Gade, Lutz H. ORCID logo; Franke, Katharina J. (ORCID: 0000-0001-9416-023X); Tegeder, Petra ORCID logo
Publisher heiDATA
Contributor Tegeder, Petra; heiDATA: Heidelberg Research Data Repository
Publication Year 2024
Funding Reference Deutsche Forschungsgemeinschaft 281029004 (SFB 1249, Projects A02 and B06) ; Deutsche Forschungsgemeinschaft 182087777 (SFB 951); K.J.F. ; International Max Planck Research School “Functional Interfaces in Physics and Chemistry” (D.R.) ; Austrian Science Fund (FWF) Y1157-N36 “MAP-DESIGN”
Rights CC BY 4.0; info:eu-repo/semantics/openAccess; http://creativecommons.org/licenses/by/4.0
OpenAccess true
Contact Tegeder, Petra (Heidelberg University, Institute for Physical Chemistry)
Representation
Resource Type Dataset
Format application/zip; text/plain
Size 515190; 1220
Version 1.0
Discipline Chemistry; Natural Sciences; Physics