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Author:

Tan, Lun (Tan, Lun.) | Liu, Xianzhen (Liu, Xianzhen.) | Yang, Piaoyun (Yang, Piaoyun.) | Li, Wei (Li, Wei.) | Yang, Weijia (Yang, Weijia.) | Li, Ang (Li, Ang.) (Scholars:李昂) | Gu, Haoshuang (Gu, Haoshuang.) | Wang, Zhao (Wang, Zhao.)

Indexed by:

EI Scopus SCIE

Abstract:

he development of high-performance hydro-gen sensors is considered of great significance for the safety of hydrogen energy and related industries. The two-dimensional(2D) MoS(2)nanomaterials have exhibited great superiority inbuilding fast and reliable room-temperature hydrogen sensors. However, their poor sensitivity and selectivity issues still limit their wide exploitation. In this work, nano-SnO2-mod-ified MoS(2)thin films with structure-dependent n-p tunable hydrogen response behaviours were reported. Thein-situscanning Kelvin probe microscopy (SKPM) study on the hy-drogen response of the SnO2/MoS(2)systems revealed the dif-ferent reductions in the surface potential of SnO2(0.38 eV)and MoS2(0.26 eV) in a hydrogen environment, which resultsin different variations in the interface potential barrier withthe increasing surface coverage of SnO2. As a result, the con-tribution from the interface effect to the n-type hydrogen re-sponse was changed from the positive enhancement to thenegative compensation. The sensor exhibited a fast, enhanced,and selective n-type hydrogen response with the SnO(2)coveragedown to 6.4%, while a p-type sensor response was achievedwhen the SnO(2)coverage increased to 95.6%. Such structure-dependent n-p tunable hydrogen sensing behaviour can notonly be utilized for the sensitization of the sensing layers butmay also provide a simple and cost-effective way for themodulation of the response type of the sensor composed of theMoS(2)-based 2D materials.

Keyword:

hydrogen sensor 2D materials tin dioxide molybdenum disulfide scanning Kelvin probe microscopy

Author Community:

  • [ 1 ] [Tan, Lun]Hubei Univ, Hubei Engn Res Ctr Safety Detect & Control Hydroge, Sch Microelect, Hubei Key Lab Micro& Nanoelect Mat & Devices, Wuhan 430062, Peoples R China
  • [ 2 ] [Liu, Xianzhen]Hubei Univ, Hubei Engn Res Ctr Safety Detect & Control Hydroge, Sch Microelect, Hubei Key Lab Micro& Nanoelect Mat & Devices, Wuhan 430062, Peoples R China
  • [ 3 ] [Yang, Weijia]Hubei Univ, Hubei Engn Res Ctr Safety Detect & Control Hydroge, Sch Microelect, Hubei Key Lab Micro& Nanoelect Mat & Devices, Wuhan 430062, Peoples R China
  • [ 4 ] [Gu, Haoshuang]Hubei Univ, Hubei Engn Res Ctr Safety Detect & Control Hydroge, Sch Microelect, Hubei Key Lab Micro& Nanoelect Mat & Devices, Wuhan 430062, Peoples R China
  • [ 5 ] [Wang, Zhao]Hubei Univ, Hubei Engn Res Ctr Safety Detect & Control Hydroge, Sch Microelect, Hubei Key Lab Micro& Nanoelect Mat & Devices, Wuhan 430062, Peoples R China
  • [ 6 ] [Yang, Piaoyun]Hubei Univ Educ, Coll Phys & Electromech Engn, Wuhan 430205, Peoples R China
  • [ 7 ] [Tan, Lun]Beijing Univ Technol, Inst Microstruct & Properties Adv Mat, Beijing 100124, Peoples R China
  • [ 8 ] [Li, Wei]Beijing Univ Technol, Inst Microstruct & Properties Adv Mat, Beijing 100124, Peoples R China
  • [ 9 ] [Li, Ang]Beijing Univ Technol, Inst Microstruct & Properties Adv Mat, Beijing 100124, Peoples R China

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Source :

SCIENCE CHINA-MATERIALS

ISSN: 2095-8226

Year: 2023

Issue: 11

Volume: 66

Page: 4427-4436

8 . 1 0 0

JCR@2022

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 4

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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