Density-dependent excitonic properties and dynamics in 2D heterostructures consisting of boron nitride and monolayer or few-layer tungsten diselenide

Lorenz Maximilian Schneider; Jan Kuhnert; Sina Lippert; Dylan Renaud; Wolfram Heimbrodt; Obafunso Ajayi; Young Duck Kim; James C. Hone; Kyung Nam Kang; Eui Hyeok Yang; Arash Rahimi-Iman

doi:10.1117/12.2305449

Density-dependent excitonic properties and dynamics in 2D heterostructures consisting of boron nitride and monolayer or few-layer tungsten diselenide

Lorenz Maximilian Schneider, Jan Kuhnert, Sina Lippert, Dylan Renaud, Wolfram Heimbrodt, Obafunso Ajayi, Young Duck Kim, James C. Hone, Kyung Nam Kang, Eui Hyeok Yang, Arash Rahimi-Iman

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Citation (Scopus)

Abstract

The understanding of two-dimensional (2D) materials has grown tremendously, especially for isolated monolayers. Recently, complex structures formed by stacking 2D materials have attracted considerable attention. This is in part due to the fact that the properties of monolayers are known to be influenced by their surroundings. Consequently, monolayer properties are predicted to be affected by "heterostructuring". A study involving high-charge-carrier-density effects and dynamics is presented here for monolayers of WSe2 on different substrates and heterostructures comprised of 2D h-BN and WSe2. The influence of h-BN as well as the bilayer stacking order on the spectral and dynamical properties of WSe2-monolayer emission is discussed for the low-density regime and evidenced for high-density effects such as exciton-exciton annihilation and the Mott transition.

Original language	English
Title of host publication	Micro- and Nanotechnology Sensors, Systems, and Applications X
Editors	M. Saif Islam, Thomas George, Achyut K. Dutta
Publisher	SPIE
ISBN (Electronic)	9781510617896
DOIs	https://doi.org/10.1117/12.2305449
Publication status	Published - 2018
Event	2018 Micro- and Nanotechnology (MNT) Sensors, Systems, and Applications X Conference - Orlando, United States Duration: 15 Apr 2018 → 19 Apr 2018

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	10639
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	2018 Micro- and Nanotechnology (MNT) Sensors, Systems, and Applications X Conference
Country/Territory	United States
City	Orlando
Period	15/04/18 → 19/04/18

Bibliographical note

Publisher Copyright:
© COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

Keywords

2D heterostructures
Boron nitride
Excitonic properties
Mott transition
Tungsten diselenide

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10.1117/12.2305449

Cite this

Schneider, L. M., Kuhnert, J., Lippert, S., Renaud, D., Heimbrodt, W., Ajayi, O., Kim, Y. D., Hone, J. C., Kang, K. N., Yang, E. H., & Rahimi-Iman, A. (2018). Density-dependent excitonic properties and dynamics in 2D heterostructures consisting of boron nitride and monolayer or few-layer tungsten diselenide. In M. S. Islam, T. George, & A. K. Dutta (Eds.), Micro- and Nanotechnology Sensors, Systems, and Applications X Article 106390V (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10639). SPIE. https://doi.org/10.1117/12.2305449

Schneider, Lorenz Maximilian ; Kuhnert, Jan ; Lippert, Sina et al. / Density-dependent excitonic properties and dynamics in 2D heterostructures consisting of boron nitride and monolayer or few-layer tungsten diselenide. Micro- and Nanotechnology Sensors, Systems, and Applications X. editor / M. Saif Islam ; Thomas George ; Achyut K. Dutta. SPIE, 2018. (Proceedings of SPIE - The International Society for Optical Engineering).

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title = "Density-dependent excitonic properties and dynamics in 2D heterostructures consisting of boron nitride and monolayer or few-layer tungsten diselenide",

abstract = "The understanding of two-dimensional (2D) materials has grown tremendously, especially for isolated monolayers. Recently, complex structures formed by stacking 2D materials have attracted considerable attention. This is in part due to the fact that the properties of monolayers are known to be influenced by their surroundings. Consequently, monolayer properties are predicted to be affected by {"}heterostructuring{"}. A study involving high-charge-carrier-density effects and dynamics is presented here for monolayers of WSe2 on different substrates and heterostructures comprised of 2D h-BN and WSe2. The influence of h-BN as well as the bilayer stacking order on the spectral and dynamical properties of WSe2-monolayer emission is discussed for the low-density regime and evidenced for high-density effects such as exciton-exciton annihilation and the Mott transition.",

keywords = "2D heterostructures, Boron nitride, Excitonic properties, Mott transition, Tungsten diselenide",

author = "Schneider, {Lorenz Maximilian} and Jan Kuhnert and Sina Lippert and Dylan Renaud and Wolfram Heimbrodt and Obafunso Ajayi and Kim, {Young Duck} and Hone, {James C.} and Kang, {Kyung Nam} and Yang, {Eui Hyeok} and Arash Rahimi-Iman",

note = "Publisher Copyright: {\textcopyright} COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.; 2018 Micro- and Nanotechnology (MNT) Sensors, Systems, and Applications X Conference ; Conference date: 15-04-2018 Through 19-04-2018",

year = "2018",

doi = "10.1117/12.2305449",

language = "English",

series = "Proceedings of SPIE - The International Society for Optical Engineering",

publisher = "SPIE",

editor = "Islam, {M. Saif} and Thomas George and Dutta, {Achyut K.}",

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Schneider, LM, Kuhnert, J, Lippert, S, Renaud, D, Heimbrodt, W, Ajayi, O, Kim, YD, Hone, JC, Kang, KN, Yang, EH & Rahimi-Iman, A 2018, Density-dependent excitonic properties and dynamics in 2D heterostructures consisting of boron nitride and monolayer or few-layer tungsten diselenide. in MS Islam, T George & AK Dutta (eds), Micro- and Nanotechnology Sensors, Systems, and Applications X., 106390V, Proceedings of SPIE - The International Society for Optical Engineering, vol. 10639, SPIE, 2018 Micro- and Nanotechnology (MNT) Sensors, Systems, and Applications X Conference, Orlando, United States, 15/04/18. https://doi.org/10.1117/12.2305449

Density-dependent excitonic properties and dynamics in 2D heterostructures consisting of boron nitride and monolayer or few-layer tungsten diselenide. / Schneider, Lorenz Maximilian; Kuhnert, Jan; Lippert, Sina et al.
Micro- and Nanotechnology Sensors, Systems, and Applications X. ed. / M. Saif Islam; Thomas George; Achyut K. Dutta. SPIE, 2018. 106390V (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10639).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Density-dependent excitonic properties and dynamics in 2D heterostructures consisting of boron nitride and monolayer or few-layer tungsten diselenide

AU - Schneider, Lorenz Maximilian

AU - Kuhnert, Jan

AU - Lippert, Sina

AU - Renaud, Dylan

AU - Heimbrodt, Wolfram

AU - Ajayi, Obafunso

AU - Kim, Young Duck

AU - Hone, James C.

AU - Kang, Kyung Nam

AU - Yang, Eui Hyeok

AU - Rahimi-Iman, Arash

PY - 2018

Y1 - 2018

N2 - The understanding of two-dimensional (2D) materials has grown tremendously, especially for isolated monolayers. Recently, complex structures formed by stacking 2D materials have attracted considerable attention. This is in part due to the fact that the properties of monolayers are known to be influenced by their surroundings. Consequently, monolayer properties are predicted to be affected by "heterostructuring". A study involving high-charge-carrier-density effects and dynamics is presented here for monolayers of WSe2 on different substrates and heterostructures comprised of 2D h-BN and WSe2. The influence of h-BN as well as the bilayer stacking order on the spectral and dynamical properties of WSe2-monolayer emission is discussed for the low-density regime and evidenced for high-density effects such as exciton-exciton annihilation and the Mott transition.

AB - The understanding of two-dimensional (2D) materials has grown tremendously, especially for isolated monolayers. Recently, complex structures formed by stacking 2D materials have attracted considerable attention. This is in part due to the fact that the properties of monolayers are known to be influenced by their surroundings. Consequently, monolayer properties are predicted to be affected by "heterostructuring". A study involving high-charge-carrier-density effects and dynamics is presented here for monolayers of WSe2 on different substrates and heterostructures comprised of 2D h-BN and WSe2. The influence of h-BN as well as the bilayer stacking order on the spectral and dynamical properties of WSe2-monolayer emission is discussed for the low-density regime and evidenced for high-density effects such as exciton-exciton annihilation and the Mott transition.

KW - 2D heterostructures

KW - Boron nitride

KW - Excitonic properties

KW - Mott transition

KW - Tungsten diselenide

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DO - 10.1117/12.2305449

M3 - Conference contribution

AN - SCOPUS:85049223076

T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Micro- and Nanotechnology Sensors, Systems, and Applications X

A2 - Islam, M. Saif

A2 - George, Thomas

A2 - Dutta, Achyut K.

PB - SPIE

T2 - 2018 Micro- and Nanotechnology (MNT) Sensors, Systems, and Applications X Conference

Y2 - 15 April 2018 through 19 April 2018

ER -

Schneider LM, Kuhnert J, Lippert S, Renaud D, Heimbrodt W, Ajayi O et al. Density-dependent excitonic properties and dynamics in 2D heterostructures consisting of boron nitride and monolayer or few-layer tungsten diselenide. In Islam MS, George T, Dutta AK, editors, Micro- and Nanotechnology Sensors, Systems, and Applications X. SPIE. 2018. 106390V. (Proceedings of SPIE - The International Society for Optical Engineering). doi: 10.1117/12.2305449

Density-dependent excitonic properties and dynamics in 2D heterostructures consisting of boron nitride and monolayer or few-layer tungsten diselenide

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Keywords

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