Please use this identifier to cite or link to this item: http://dx.doi.org/10.14279/depositonce-9669
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Main Title: Anti‐Stokes Photoluminescence of Monolayer WS2
Author(s): Pierret, Aurélie
Tornatzky, Hans
Maultzsch, Janina
Type: Article
Language Code: en
Abstract: Anti‐Stokes photoluminescence excitation of a WS2 monolayer flake between 10 and 300 K is reported herein. Even with continuous‐wave lasers at low power, the emission of the exciton at excitation 100 meV below its emission energy at room temperature is observed. A mechanism which involves the trions as the intermediate state is proposed, leading to an efficient up‐conversion process. In addition, it is demonstrated that phonons are the source of the additional energy needed by the system. Overall, the results provide evidence that anti‐Stokes luminescence in transition metal dichalcogenides is very efficient.
URI: https://depositonce.tu-berlin.de/handle/11303/10774
http://dx.doi.org/10.14279/depositonce-9669
Issue Date: 9-Oct-2019
Date Available: 13-Feb-2020
DDC Class: 530 Physik
Subject(s): anti-Stokes excitation
excitons
monolayers
photoluminescence
transition metal dichalcogenides
Sponsor/Funder: EC/FP7/259286/EU/Characterizing and Controlling Carbon Nanomaterials/CCCAN
DFG, 53244630, EXC 315: Neue Materialien und Prozesse - Hierarchische Strukturbildung für funktionale Bauteile
DFG, 43659573, SFB 787: Halbleiter - Nanophotonik: Materialien, Modelle, Bauelemente
TU Berlin, Open-Access-Mittel - 2019
License: https://creativecommons.org/licenses/by/4.0/
Journal Title: physica status solidi (b) basic solid state physics
Publisher: Wiley
Publisher Place: Weinheim
Volume: 256
Issue: 12
Article Number: 1900419
Publisher DOI: 10.1002/pssb.201900419
EISSN: 1521-3951
ISSN: 0370-1972
Appears in Collections:Inst. Festkörperphysik » Publications

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