Recovery Improvement for Large-Area Tungsten Diselenide Gas Sensors

Kyung Yong Ko; Kyunam Park; Sangyoon Lee; Youngjun Kim; Whang Je Woo; Donghyun Kim; Jeong Gyu Song; Jusang Park; Hyungjun Kim

doi:10.1021/acsami.8b07034

Recovery Improvement for Large-Area Tungsten Diselenide Gas Sensors

Kyung Yong Ko, Kyunam Park, Sangyoon Lee, Youngjun Kim, Whang Je Woo, Donghyun Kim, Jeong Gyu Song, Jusang Park, Hyungjun Kim

Department of Electrical and Electronic Engineering

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

82 Citations (Scopus)

Abstract

Semiconducting two-dimensional transition-metal dichalcogenides are considered promising gas-sensing materials because of their large surface-to-volume ratio, excellent electrical conductivity, and susceptible surfaces. However, enhancement of the recovery performance has not yet been intensively explored. In this study, a large-area uniform WSe₂ is synthesized for use in a high-performance semiconductor gas sensor. At room temperature, the WSe₂ gas sensor shows a significantly high response (4140%) to NO₂ compared to the use of NH₃, CO₂, and acetone. This paper demonstrates improved recovery of the WSe₂ gas sensor's NO₂-sensing performance by utilizing external thermal energy. In addition, a novel strategy for improving the recovery of the WSe₂ gas sensor is realized by reacting NH₃ and adsorbed NO₂ on the surface of WSe₂: the NO₂ molecules are spontaneously desorbed, and the recovery time is dramatically decreased (85 min → 43 s). It is expected that the fast recovery of the WSe₂ gas sensor achieved here will be used to develop an environmental monitoring system platform.

Original language	English
Pages (from-to)	23910-23917
Number of pages	8
Journal	ACS Applied Materials and Interfaces
Volume	10
Issue number	28
DOIs	https://doi.org/10.1021/acsami.8b07034
Publication status	Published - 2018 Jul 18

Bibliographical note

Funding Information:
This study was supported by the Materials and Components Technology Development Program of MOTIE/KEIT (10080527, Development of commercialization technology of high sensitive gas sensor based on chalcogenide 2D nano material); a grant from the National Research Foundation of Korea (NRF) funded by the Korea government (MSIP) (No. NRF-2014R1A2A1A11052588); and Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (No. 2015R1D1A1A01060064).

Publisher Copyright:
© 2018 American Chemical Society.

All Science Journal Classification (ASJC) codes

Materials Science(all)

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10.1021/acsami.8b07034

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title = "Recovery Improvement for Large-Area Tungsten Diselenide Gas Sensors",

abstract = "Semiconducting two-dimensional transition-metal dichalcogenides are considered promising gas-sensing materials because of their large surface-to-volume ratio, excellent electrical conductivity, and susceptible surfaces. However, enhancement of the recovery performance has not yet been intensively explored. In this study, a large-area uniform WSe2 is synthesized for use in a high-performance semiconductor gas sensor. At room temperature, the WSe2 gas sensor shows a significantly high response (4140%) to NO2 compared to the use of NH3, CO2, and acetone. This paper demonstrates improved recovery of the WSe2 gas sensor's NO2-sensing performance by utilizing external thermal energy. In addition, a novel strategy for improving the recovery of the WSe2 gas sensor is realized by reacting NH3 and adsorbed NO2 on the surface of WSe2: the NO2 molecules are spontaneously desorbed, and the recovery time is dramatically decreased (85 min → 43 s). It is expected that the fast recovery of the WSe2 gas sensor achieved here will be used to develop an environmental monitoring system platform.",

author = "Ko, {Kyung Yong} and Kyunam Park and Sangyoon Lee and Youngjun Kim and Woo, {Whang Je} and Donghyun Kim and Song, {Jeong Gyu} and Jusang Park and Hyungjun Kim",

note = "Funding Information: This study was supported by the Materials and Components Technology Development Program of MOTIE/KEIT (10080527, Development of commercialization technology of high sensitive gas sensor based on chalcogenide 2D nano material); a grant from the National Research Foundation of Korea (NRF) funded by the Korea government (MSIP) (No. NRF-2014R1A2A1A11052588); and Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (No. 2015R1D1A1A01060064). Publisher Copyright: {\textcopyright} 2018 American Chemical Society.",

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AU - Kim, Donghyun

AU - Song, Jeong Gyu

AU - Park, Jusang

AU - Kim, Hyungjun

N1 - Funding Information: This study was supported by the Materials and Components Technology Development Program of MOTIE/KEIT (10080527, Development of commercialization technology of high sensitive gas sensor based on chalcogenide 2D nano material); a grant from the National Research Foundation of Korea (NRF) funded by the Korea government (MSIP) (No. NRF-2014R1A2A1A11052588); and Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (No. 2015R1D1A1A01060064). Publisher Copyright: © 2018 American Chemical Society.

PY - 2018/7/18

Y1 - 2018/7/18

N2 - Semiconducting two-dimensional transition-metal dichalcogenides are considered promising gas-sensing materials because of their large surface-to-volume ratio, excellent electrical conductivity, and susceptible surfaces. However, enhancement of the recovery performance has not yet been intensively explored. In this study, a large-area uniform WSe2 is synthesized for use in a high-performance semiconductor gas sensor. At room temperature, the WSe2 gas sensor shows a significantly high response (4140%) to NO2 compared to the use of NH3, CO2, and acetone. This paper demonstrates improved recovery of the WSe2 gas sensor's NO2-sensing performance by utilizing external thermal energy. In addition, a novel strategy for improving the recovery of the WSe2 gas sensor is realized by reacting NH3 and adsorbed NO2 on the surface of WSe2: the NO2 molecules are spontaneously desorbed, and the recovery time is dramatically decreased (85 min → 43 s). It is expected that the fast recovery of the WSe2 gas sensor achieved here will be used to develop an environmental monitoring system platform.

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Recovery Improvement for Large-Area Tungsten Diselenide Gas Sensors

Abstract

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