Effects of acetone vapor on the exciton band photoluminescence emission from single-and few-layer WS2 on template-stripped gold

Samantha Matthews; Chuan Zhao; Hao Zeng; Frank V. Bright

doi:10.3390/s19081913

Effects of acetone vapor on the exciton band photoluminescence emission from single-and few-layer WS₂ on template-stripped gold

Samantha Matthews
, Chuan Zhao
, Hao Zeng
, Frank V. Bright

SUNY Buffalo

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

Two-dimensional (2D) materials are being used widely for chemical sensing applications due to their large surface-to-volume ratio and photoluminescence (PL) emission and emission exciton band tunability. To better understand how the analyte affects the PL response for a model 2D platform, we used atomic force microscopy (AFM) and co-localized photoluminescence (PL) and Raman mapping to characterize tungsten disulfide (WS₂) flakes on template-stripped gold (TSG) under acetone challenge. We determined the PL-based response from single-and few-layer WS₂ arises from three excitons (neutral, A⁰; biexciton, AA; and the trion, A⁻). The A⁰ exciton PL emission is the most strongly quenched by acetone whereas the A⁻ PL emission exhibits an enhancement. We find the PL behavior is also WS₂ layer number dependent.

Original language	English
Article number	1913
Journal	Sensors
Volume	19
Issue number	8
DOIs	https://doi.org/10.3390/s19081913
State	Published - Apr 2 2019

Keywords

Atomic force microscopy
Raman and Photoluminescence mapping
Single-and few-layer WS
Vapor sensing

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10.3390/s19081913

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title = "Effects of acetone vapor on the exciton band photoluminescence emission from single-and few-layer WS2 on template-stripped gold",

abstract = "Two-dimensional (2D) materials are being used widely for chemical sensing applications due to their large surface-to-volume ratio and photoluminescence (PL) emission and emission exciton band tunability. To better understand how the analyte affects the PL response for a model 2D platform, we used atomic force microscopy (AFM) and co-localized photoluminescence (PL) and Raman mapping to characterize tungsten disulfide (WS2) flakes on template-stripped gold (TSG) under acetone challenge. We determined the PL-based response from single-and few-layer WS2 arises from three excitons (neutral, A0; biexciton, AA; and the trion, A−). The A0 exciton PL emission is the most strongly quenched by acetone whereas the A− PL emission exhibits an enhancement. We find the PL behavior is also WS2 layer number dependent.",

keywords = "Atomic force microscopy, Raman and Photoluminescence mapping, Single-and few-layer WS, Vapor sensing",

author = "Samantha Matthews and Chuan Zhao and Hao Zeng and Bright, \{Frank V.\}",

note = "Publisher Copyright: {\textcopyright} 2019 by the authors. Licensee MDPI, Basel, Switzerland.",

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doi = "10.3390/s19081913",

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T1 - Effects of acetone vapor on the exciton band photoluminescence emission from single-and few-layer WS2 on template-stripped gold

AU - Matthews, Samantha

AU - Zhao, Chuan

AU - Zeng, Hao

AU - Bright, Frank V.

PY - 2019/4/2

Y1 - 2019/4/2

N2 - Two-dimensional (2D) materials are being used widely for chemical sensing applications due to their large surface-to-volume ratio and photoluminescence (PL) emission and emission exciton band tunability. To better understand how the analyte affects the PL response for a model 2D platform, we used atomic force microscopy (AFM) and co-localized photoluminescence (PL) and Raman mapping to characterize tungsten disulfide (WS2) flakes on template-stripped gold (TSG) under acetone challenge. We determined the PL-based response from single-and few-layer WS2 arises from three excitons (neutral, A0; biexciton, AA; and the trion, A−). The A0 exciton PL emission is the most strongly quenched by acetone whereas the A− PL emission exhibits an enhancement. We find the PL behavior is also WS2 layer number dependent.

AB - Two-dimensional (2D) materials are being used widely for chemical sensing applications due to their large surface-to-volume ratio and photoluminescence (PL) emission and emission exciton band tunability. To better understand how the analyte affects the PL response for a model 2D platform, we used atomic force microscopy (AFM) and co-localized photoluminescence (PL) and Raman mapping to characterize tungsten disulfide (WS2) flakes on template-stripped gold (TSG) under acetone challenge. We determined the PL-based response from single-and few-layer WS2 arises from three excitons (neutral, A0; biexciton, AA; and the trion, A−). The A0 exciton PL emission is the most strongly quenched by acetone whereas the A− PL emission exhibits an enhancement. We find the PL behavior is also WS2 layer number dependent.

KW - Atomic force microscopy

KW - Raman and Photoluminescence mapping

KW - Single-and few-layer WS

KW - Vapor sensing

UR - https://www.scopus.com/pages/publications/85065324149

U2 - 10.3390/s19081913

DO - 10.3390/s19081913

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AN - SCOPUS:85065324149

SN - 1424-8220

VL - 19

JO - Sensors

JF - Sensors

IS - 8

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ER -

Effects of acetone vapor on the exciton band photoluminescence emission from single-and few-layer WS₂ on template-stripped gold

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Keywords

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