Nonlinear photoluminescence in atomically thin layered WSe2 arising from diffusion-assisted exciton-exciton annihilation

Nonlinear photoluminescence in atomically thin layered WSe2 arising from diffusion-assisted exciton-exciton annihilation

We studied multiexciton dynamics in monolayer WSe2 using nonlinear photoluminescence (PL) spectroscopy and Monte Carlo simulations. We observed strong nonlinear saturation behavior of exciton PL with increasing excitation power density and long-distance exciton diffusion, reaching several micrometer...

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Main Authors: Mouri, Shinichiro, Miyauchi, Yuhei, Toh, Minglin, Zhao, Weijie, Eda, Goki, Matsuda, Kazunari
Other Authors: School of Materials Science & Engineering
Format: Article
Language:English
Published: 2014
Subjects:
DRNTU::Engineering::Materials
Online Access:https://hdl.handle.net/10356/102413
http://hdl.handle.net/10220/24269
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1024132023-07-14T15:46:10Z Nonlinear photoluminescence in atomically thin layered WSe2 arising from diffusion-assisted exciton-exciton annihilation Mouri, Shinichiro Miyauchi, Yuhei Toh, Minglin Zhao, Weijie Eda, Goki Matsuda, Kazunari School of Materials Science & Engineering DRNTU::Engineering::Materials We studied multiexciton dynamics in monolayer WSe2 using nonlinear photoluminescence (PL) spectroscopy and Monte Carlo simulations. We observed strong nonlinear saturation behavior of exciton PL with increasing excitation power density and long-distance exciton diffusion, reaching several micrometers. We demonstrated that the diffusion-assisted exciton-exciton annihilation (EEA) model accounts for the observed nonlinear PL behavior. The long-distance exciton diffusion and subsequent efficient EEA process determined the unusual multiexciton dynamics in atomically thin layered transition metal dichalcogenides. Published version 2014-12-01T05:16:54Z 2019-12-06T20:54:33Z 2014-12-01T05:16:54Z 2019-12-06T20:54:33Z 2014 2014 Journal Article Mouri, S., Miyauchi, Y., Toh, M., Zhao, W., Eda, G., & Matsuda, K. (2014). Nonlinear photoluminescence in atomically thin layered WSe2 arising from diffusion-assisted exciton-exciton annihilation. Physical review B, 90(15),155449,1-5 . 1098-0121 https://hdl.handle.net/10356/102413 http://hdl.handle.net/10220/24269 10.1103/PhysRevB.90.155449 en Physical review B © 2014 American Physical Society. This paper was published in Physical Review B and is made available as an electronic reprint (preprint) with permission of American Physical Society. The paper can be found at the following official DOI: [http://dx.doi.org/10.1103/PhysRevB.90.155449]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. 5 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Materials
spellingShingle DRNTU::Engineering::Materials
Mouri, Shinichiro
Miyauchi, Yuhei
Toh, Minglin
Zhao, Weijie
Eda, Goki
Matsuda, Kazunari
Nonlinear photoluminescence in atomically thin layered WSe2 arising from diffusion-assisted exciton-exciton annihilation
description We studied multiexciton dynamics in monolayer WSe2 using nonlinear photoluminescence (PL) spectroscopy and Monte Carlo simulations. We observed strong nonlinear saturation behavior of exciton PL with increasing excitation power density and long-distance exciton diffusion, reaching several micrometers. We demonstrated that the diffusion-assisted exciton-exciton annihilation (EEA) model accounts for the observed nonlinear PL behavior. The long-distance exciton diffusion and subsequent efficient EEA process determined the unusual multiexciton dynamics in atomically thin layered transition metal dichalcogenides.
author2 School of Materials Science & Engineering
author_facet School of Materials Science & Engineering
Mouri, Shinichiro
Miyauchi, Yuhei
Toh, Minglin
Zhao, Weijie
Eda, Goki
Matsuda, Kazunari
format Article
author Mouri, Shinichiro
Miyauchi, Yuhei
Toh, Minglin
Zhao, Weijie
Eda, Goki
Matsuda, Kazunari
author_sort Mouri, Shinichiro
title Nonlinear photoluminescence in atomically thin layered WSe2 arising from diffusion-assisted exciton-exciton annihilation
title_short Nonlinear photoluminescence in atomically thin layered WSe2 arising from diffusion-assisted exciton-exciton annihilation
title_full Nonlinear photoluminescence in atomically thin layered WSe2 arising from diffusion-assisted exciton-exciton annihilation
title_fullStr Nonlinear photoluminescence in atomically thin layered WSe2 arising from diffusion-assisted exciton-exciton annihilation
title_full_unstemmed Nonlinear photoluminescence in atomically thin layered WSe2 arising from diffusion-assisted exciton-exciton annihilation
title_sort nonlinear photoluminescence in atomically thin layered wse2 arising from diffusion-assisted exciton-exciton annihilation
publishDate 2014
url https://hdl.handle.net/10356/102413
http://hdl.handle.net/10220/24269
_version_ 1772826873674334208

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