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Optical imaging and spectroscopy of atomically precise armchair graphene nanoribbons

Sihan Zhao1, Gabriela Borin Barin2, Ting Cao1,3, Jan Overbeck2, Rimah Darawish2, Tairu Lyu1, Steve Drapcho1, Sheng Wang1,4, Tim Dumslaff5, Akimitsu Narita5, Michel Calame2, Klaus Müllen5,6, Steven G. Louie1,4, Pascal Ruffieux2*, Roman Fasel2,7*

1 Department of Physics, University of California at Berkeley, Berkeley, California 94720, United States

2 Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland

3 Department of Materials Science and Engineering, University of Washington, Seattle, Washington, United States

4 Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States

5 Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany

6 Institute of Physical Chemistry, Johannes Gutenberg-Universität Mainz, 55128 Mainz, Germany

7 Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, CH-3012 Bern, Switzerland

* Corresponding authors emails: pascal.ruffieux@empa.ch, roman.fasel@empa.ch
DOI10.24435/materialscloud:p9-eq [version v1]

Publication date: Oct 30, 2020

How to cite this record

Sihan Zhao, Gabriela Borin Barin, Ting Cao, Jan Overbeck, Rimah Darawish, Tairu Lyu, Steve Drapcho, Sheng Wang, Tim Dumslaff, Akimitsu Narita, Michel Calame, Klaus Müllen, Steven G. Louie, Pascal Ruffieux, Roman Fasel, Optical imaging and spectroscopy of atomically precise armchair graphene nanoribbons, Materials Cloud Archive 2020.134 (2020), doi: 10.24435/materialscloud:p9-eq.

Description

The record contains data that support the work where we report the optical imaging and absorption spectroscopy on atomically precise armchair graphene nanoribbons (GNRs) on insulating fused silica substrates. This is achieved by controlling light polarization on macroscopically aligned GNRs which greatly enhances the optical contrast of the submonolayer GNRs on the insulating substrates. We measure the linear absorption spectra of 7-armchair and 9-armchair GNRs in this study, and the experimental data agree qualitatively with ab inito calculation results. The polarization spectroscopy technique enables an unambiguous optical identification of GNRs and provides a rapid tool to characterize the transferred film over a large area.

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Keywords

MARVEL/DD3 graphene nanoribbons optical imaging absorption spectroscopy SNSF

Version history:

2020.134 (version v1) [This version] Oct 30, 2020 DOI10.24435/materialscloud:p9-eq