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Spectroscopic view ...
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Majchrzak, PaulinaAarhus Univ, Interdisciplinary Nanosci Ctr, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.
(author)
Spectroscopic view of ultrafast charge carrier dynamics in single- and bilayer transition metal dichalcogenide semiconductors
- Article/chapterEnglish2021
Publisher, publication year, extent ...
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Elsevier BV,2021
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printrdacarrier
Numbers
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LIBRIS-ID:oai:DiVA.org:kth-299462
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-299462URI
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https://doi.org/10.1016/j.elspec.2021.147093DOI
Supplementary language notes
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Language:English
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Summary in:English
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Classification
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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QC 20210811
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The quasiparticle spectra of atomically thin semiconducting transition metal dichalcogenides (TMDCs) and their response to an ultrafast optical excitation critically depend on interactions with the underlying substrate. Here, we present a comparative time- and angle-resolved photoemission spectroscopy (TR-ARPES) study of the transient electronic structure and ultrafast carrier dynamics in the single- and bilayer TMDCs MoS2 and WS2 on three different substrates: Au(111), Ag(111) and graphene/SiC. The photoexcited quasiparticle bandgaps are observed to vary over the range of 1.9-2.5 eV between our systems. The transient conduction band signals decay on a sub-50 fs timescale on the metals, signifying an efficient removal of photoinduced carriers into the bulk metallic states. On graphene, we instead observe a fast timescale on the order of 170 fs, followed by a slow dynamics for the conduction band decay in MoS2. These timescales are explained by Auger recombination involving MoS2 and in-gap defect states. In bilayer TMDCs on metals we observe a complex redistribution of excited holes along the valence band that is substantially affected by interactions with the continuum of bulk metallic states.
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Added entries (persons, corporate bodies, meetings, titles ...)
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Volckaert, KlaraAarhus Univ, Interdisciplinary Nanosci Ctr, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.
(author)
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Grubisic-Cabo, AntonijaKTH,Tillämpad fysik(Swepub:kth)u1a8lj3o
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Biswas, DeepnarayanAarhus Univ, Interdisciplinary Nanosci Ctr, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.
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Bianchi, MarcoAarhus Univ, Interdisciplinary Nanosci Ctr, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.
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Mahatha, Sanjoy K.DESY, Ruprecht Haensel Lab, D-22607 Hamburg, Germany.
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Dendzik, MaciejKTH,Material- och nanofysik(Swepub:kth)u1dqoluh
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Andreatta, FedericoAarhus Univ, Interdisciplinary Nanosci Ctr, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.
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Gronborg, Signe S.Aarhus Univ, Interdisciplinary Nanosci Ctr, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.
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Markovic, IgorUniv St Andrews, Sch Phys & Astron, SUPA, St Andrews KY16 9SS, Fife, Scotland.;Max Planck Inst Chem Phys Solids, Nothnitzer Str 40, D-01187 Dresden, Germany.
(author)
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Riley, Jonathon M.Univ St Andrews, Sch Phys & Astron, SUPA, St Andrews KY16 9SS, Fife, Scotland.
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Johannsen, Jens C.Ecole Polytech Fed Lausanne EPFL, Inst Condensed Matter Phys, Lausanne, Switzerland.
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Lizzit, DanielUniv Udine, DPIA, Via Sci 206, I-33100 Udine, Italy.
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Bignardi, LucaUniv Trieste, Dept Phys, Via Valerio 2, I-34127 Trieste, Italy.
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Lizzit, SilvanoElettra Sincrotrone Trieste SCpA, SS 14 Km 163-5, I-34149 Trieste, Italy.
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Cacho, CephiseDiamond Light Source, Didcot OX11 0DE, Oxon, England.
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Alexander, OliverSTFC Rutherford Appleton Lab, Cent Laser Facil, Harwell, Berks, England.
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Matselyukh, DanSTFC Rutherford Appleton Lab, Cent Laser Facil, Harwell, Berks, England.
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Wyatt, Adam S.STFC Rutherford Appleton Lab, Cent Laser Facil, Harwell, Berks, England.
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Chapman, Richard T.STFC Rutherford Appleton Lab, Cent Laser Facil, Harwell, Berks, England.
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Springate, EmmaSTFC Rutherford Appleton Lab, Cent Laser Facil, Harwell, Berks, England.
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Lauritsen, Jeppe, VAarhus Univ, Interdisciplinary Nanosci Ctr, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.
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King, Phil D. C.Univ St Andrews, Sch Phys & Astron, SUPA, St Andrews KY16 9SS, Fife, Scotland.
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Sanders, Charlotte E.Aarhus Univ, Interdisciplinary Nanosci Ctr, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.
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Miwa, Jill A.Aarhus Univ, Interdisciplinary Nanosci Ctr, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.
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Hofmann, PhilipAarhus Univ, Interdisciplinary Nanosci Ctr, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.
(author)
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Ulstrup, SorenAarhus Univ, Interdisciplinary Nanosci Ctr, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.
(author)
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Aarhus Univ, Interdisciplinary Nanosci Ctr, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.Tillämpad fysik
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In:Journal of Electron Spectroscopy and Related Phenomena: Elsevier BV2500368-20481873-2526
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Majchrzak, Pauli ...
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Volckaert, Klara
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Grubisic-Cabo, A ...
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Biswas, Deepnara ...
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Bianchi, Marco
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Mahatha, Sanjoy ...
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Dendzik, Maciej
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Andreatta, Feder ...
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Gronborg, Signe ...
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Markovic, Igor
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Riley, Jonathon ...
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Johannsen, Jens ...
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Lizzit, Daniel
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Bignardi, Luca
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Lizzit, Silvano
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Cacho, Cephise
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Alexander, Olive ...
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Matselyukh, Dan
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Wyatt, Adam S.
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Chapman, Richard ...
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Springate, Emma
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Lauritsen, Jeppe ...
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King, Phil D. C.
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Sanders, Charlot ...
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Miwa, Jill A.
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Hofmann, Philip
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Ulstrup, Soren
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- NATURAL SCIENCES
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NATURAL SCIENCES
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