journal article·2016-02-23Open access

Tunable Band Alignment with Unperturbed Carrier Mobility of On-Surface Synthesized Organic Semiconducting Wires

Andrea Basagni, Guillaume Vasseur, Carlo A. Pignedoli, Manuel Vilas-Varela, Diego Peña, Louis Nicolas, Lucia Vitali, Jorge Lobo-Checa, Dimas G. de Oteyza, Francesco Sedona, Maurizio Casarin, J. Enrique Ortega, Mauro Sambi

ACS Nano· Volume 10· Issue 2

Abstract

The tunable properties of molecular materials place them among the favorites for a variety of future generation devices. In addition, to maintain the current trend of miniaturization of those devices, a departure from the present top-down production methods may soon be required and self-assembly appears among the most promising alternatives. On-surface synthesis unites the promises of molecular materials and of self-assembly, with the sturdiness of covalently bonded structures: an ideal scenario for future applications. Following this idea, we report the synthesis of functional extended nanowires by self-assembly. In particular, the products correspond to one-dimensional organic semiconductors. The uniaxial alignment provided by our substrate templates allows us to access with exquisite detail their electronic properties, including the full valence band dispersion, by combining local probes with spatial averaging techniques. We show how, by selectively doping the molecular precursors, the product's energy level alignment can be tuned without compromising the charge carrier's mobility.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Surface Chemistry and Catalysis · Molecular Junctions and Nanostructures · Covalent Organic Framework Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Dipartimento di Scienze Chimiche, Università Degli Studi di Padova, Padova 35131, Italy

Donostia International Physics Center (DIPC), Paseo Manuel Lardizabal 4, E-20018 San Sebastián, Spain

Centro de Física de Materiales (CSIC/UPV-EHU), Materials Physics Center, Paseo Manuel Lardizabal 5, E-20018 San Sebastián, Spain

NCCR MARVEL, Empa, Swiss Federal Laboratories for Materials Science and Technology, Dübendorf CH-8600, Switzerland

Centro de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, Santiago de Compostela 15782, Spain

École Normale Supérieure de Cachan, Cachan 94230, France

Ikerbasque, Basque Foundation for Science, 48013 Bilbao, Spain

Instituto de Ciencia de Materiales de Aragón (ICMA), CSIC-Universidad de Zaragoza, E-50009 Zaragoza, Spain

Departamento de Física de la Materia Condensada, Universidad de Zaragoza, E-50009 Zaragoza, Spain

Departamento de Fisica Aplicada I, Universidad del Pais Vasco, E-20018 San Sebastián, Spain

Consorzio INSTM, Unità di Ricerca di Padova, I-35131 Padova, Italy

Funding

European Research Council · Ministero dell’Istruzione, dell’Università e della Ricerca · Ministerio de Economía y Competitividad · Eusko Jaurlaritza · Università degli Studi di Padova · Seventh Framework Programme · European Regional Development Fund

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