Dissociation of two-dimensional excitons in monolayer WSe2

Mathieu Massicotte; Fabien Vialla; Peter Schmidt; Mark B. Lundeberg; Simone Latini; Sten Haastrup; Mark Danovich; Diana Davydovskaya; Kenji Watanabe; Takashi Taniguchi; Vladimir I. Fal’ko; Kristian S. Thygesen; Thomas G. Pedersen; Frank H. L. Koppens

doi:10.1038/s41467-018-03864-y

Nature Communications (Apr 2018)

Dissociation of two-dimensional excitons in monolayer WSe2

Mathieu Massicotte,
Fabien Vialla,
Peter Schmidt,
Mark B. Lundeberg,
Simone Latini,
Sten Haastrup,
Mark Danovich,
Diana Davydovskaya,
Kenji Watanabe,
Takashi Taniguchi,
Vladimir I. Fal’ko,
Kristian S. Thygesen,
Thomas G. Pedersen,
Frank H. L. Koppens

Affiliations

Mathieu Massicotte: ICFO–Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology
Fabien Vialla: ICFO–Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology
Peter Schmidt: ICFO–Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology
Mark B. Lundeberg: ICFO–Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology
Simone Latini: CAMD, Department of Physics, Technical University of Denmark
Sten Haastrup: CAMD, Department of Physics, Technical University of Denmark
Mark Danovich: National Graphene Institute, University of Manchester
Diana Davydovskaya: ICFO–Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology
Kenji Watanabe: National Institute for Materials Science
Takashi Taniguchi: National Institute for Materials Science
Vladimir I. Fal’ko: Center for Nanostructured Graphene (CNG), Technical University of Denmark
Kristian S. Thygesen: CAMD, Department of Physics, Technical University of Denmark
Thomas G. Pedersen: Department of Physics and Nanotechnology, Aalborg University
Frank H. L. Koppens: ICFO–Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology

DOI: https://doi.org/10.1038/s41467-018-03864-y
Journal volume & issue: Vol. 9, no. 1
pp. 1 – 7

Abstract

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In two-dimensional semiconductors excitons are strongly bound, suppressing the creation of free carriers. Here, the authors investigate the main exciton dissociation pathway in p-n junctions of monolayer WSe2 by means of time and spectrally resolved photocurrent measurements.

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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