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Enhancing and quantifying spatial homogeneity in monolayer WS2

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Enhancing and quantifying spatial homogeneity in monolayer WS2. / Cao, Yameng; Sebastian Wood, Sebastian; Richheimer, Filipe et al.
In: Scientific Reports, Vol. 11, 14831, 21.07.2021.

Research output: Contribution to Journal/MagazineLetterpeer-review

Harvard

Cao, Y, Sebastian Wood, S, Richheimer, F, Blakesley, J, Young, R & Castro, F 2021, 'Enhancing and quantifying spatial homogeneity in monolayer WS2', Scientific Reports, vol. 11, 14831. https://doi.org/10.1038/s41598-021-94263-9

APA

Cao, Y., Sebastian Wood, S., Richheimer, F., Blakesley, J., Young, R., & Castro, F. (2021). Enhancing and quantifying spatial homogeneity in monolayer WS2. Scientific Reports, 11, Article 14831. https://doi.org/10.1038/s41598-021-94263-9

Vancouver

Cao Y, Sebastian Wood S, Richheimer F, Blakesley J, Young R, Castro F. Enhancing and quantifying spatial homogeneity in monolayer WS2. Scientific Reports. 2021 Jul 21;11:14831. doi: 10.1038/s41598-021-94263-9

Author

Cao, Yameng ; Sebastian Wood, Sebastian ; Richheimer, Filipe et al. / Enhancing and quantifying spatial homogeneity in monolayer WS2. In: Scientific Reports. 2021 ; Vol. 11.

Bibtex

@article{21bfe15f70064cb7ab67ff360db2ab62,
title = "Enhancing and quantifying spatial homogeneity in monolayer WS2",
abstract = "Controlling the radiative properties of monolayer transition metal dichalcogenides is key to the development of atomically thin optoelectronic devices applicable to a wide range of industries. A common problem for exfoliated materials is the inherent disorder causing spatially varying nonradiative losses and therefore inhomogeneity. Here we demonstrate a five-fold reduction in the spatial inhomogeneity in monolayer WS2, resulting in enhanced overall photoluminescence emission and quality of WS2 flakes, by using an ambient-compatible laser illumination process. We propose a method to quantify spatial uniformity using statistics of spectral photoluminescence mapping. Analysis of the dynamic spectral changes shows that the enhancement is due to a spatially sensitive reduction of the charged exciton spectral weighting. The methods presented here are based on widely adopted instrumentation. They can be easily automated, making them ideal candidates for quality assessment of transition metal dichalcogenide materials, both in the laboratory and industrial environments.",
author = "Yameng Cao and {Sebastian Wood}, Sebastian and Filipe Richheimer and James Blakesley and Robert Young and Fernando Castro",
year = "2021",
month = jul,
day = "21",
doi = "10.1038/s41598-021-94263-9",
language = "English",
volume = "11",
journal = "Scientific Reports",
issn = "2045-2322",
publisher = "Nature Publishing Group",

}

RIS

TY - JOUR

T1 - Enhancing and quantifying spatial homogeneity in monolayer WS2

AU - Cao, Yameng

AU - Sebastian Wood, Sebastian

AU - Richheimer, Filipe

AU - Blakesley, James

AU - Young, Robert

AU - Castro, Fernando

PY - 2021/7/21

Y1 - 2021/7/21

N2 - Controlling the radiative properties of monolayer transition metal dichalcogenides is key to the development of atomically thin optoelectronic devices applicable to a wide range of industries. A common problem for exfoliated materials is the inherent disorder causing spatially varying nonradiative losses and therefore inhomogeneity. Here we demonstrate a five-fold reduction in the spatial inhomogeneity in monolayer WS2, resulting in enhanced overall photoluminescence emission and quality of WS2 flakes, by using an ambient-compatible laser illumination process. We propose a method to quantify spatial uniformity using statistics of spectral photoluminescence mapping. Analysis of the dynamic spectral changes shows that the enhancement is due to a spatially sensitive reduction of the charged exciton spectral weighting. The methods presented here are based on widely adopted instrumentation. They can be easily automated, making them ideal candidates for quality assessment of transition metal dichalcogenide materials, both in the laboratory and industrial environments.

AB - Controlling the radiative properties of monolayer transition metal dichalcogenides is key to the development of atomically thin optoelectronic devices applicable to a wide range of industries. A common problem for exfoliated materials is the inherent disorder causing spatially varying nonradiative losses and therefore inhomogeneity. Here we demonstrate a five-fold reduction in the spatial inhomogeneity in monolayer WS2, resulting in enhanced overall photoluminescence emission and quality of WS2 flakes, by using an ambient-compatible laser illumination process. We propose a method to quantify spatial uniformity using statistics of spectral photoluminescence mapping. Analysis of the dynamic spectral changes shows that the enhancement is due to a spatially sensitive reduction of the charged exciton spectral weighting. The methods presented here are based on widely adopted instrumentation. They can be easily automated, making them ideal candidates for quality assessment of transition metal dichalcogenide materials, both in the laboratory and industrial environments.

U2 - 10.1038/s41598-021-94263-9

DO - 10.1038/s41598-021-94263-9

M3 - Letter

VL - 11

JO - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

M1 - 14831

ER -