Stacking angle-tunable photoluminescence from interlayer exciton states in twisted bilayer graphene

Hiral Patel; Lujie Huang; Cheol-Joo Kim; Jiwoong Park; Matt W. Graham

doi:10.1038/s41467-019-09097-x

Nature Communications (Mar 2019)

Stacking angle-tunable photoluminescence from interlayer exciton states in twisted bilayer graphene

Hiral Patel,
Lujie Huang,
Cheol-Joo Kim,
Jiwoong Park,
Matt W. Graham

Affiliations

Hiral Patel: Department of Physics, Oregon State University
Lujie Huang: Department of Chemistry, Institute of Molecular Engineering, University of Chicago
Cheol-Joo Kim: Department of Chemical Engineering, Pohang University of Science and Technology
Jiwoong Park: Department of Chemistry, Institute of Molecular Engineering, University of Chicago
Matt W. Graham: Department of Physics, Oregon State University

DOI: https://doi.org/10.1038/s41467-019-09097-x
Journal volume & issue: Vol. 10, no. 1
pp. 1 – 7

Abstract

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Interlayer electronic states in twisted bilayer graphene are characterized by flat-band regions hosting many-body electronic effects. Here, the authors observe two-photon photoluminescence excitation and excited-state absorption spectra on graphene containing a variety of twist angles to access the dark exciton transitions and estimate the exciton binding energy.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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