Flexible and low power CO gas sensor with Au-functionalized 2D WS2 nanoflakes

被引：100

作者：

Kim, Jae-Hun ^{[1
]}

Mirzaei, Ali ^{[2
,3
]}

Kim, Hyoun Woo ^{[3
,4
]}

Kim, Sang Sub ^{[1
]}

机构：

[1] Inha Univ, Dept Mat Sci & Engn, Incheon 22212, South Korea

[2] Hanyang Univ, Res Inst Ind Sci, Seoul 04763, South Korea

[3] Shiraz Univ Technol, Dept Mat Sci & Engn, Shiraz, Iran

[4] Hanyang Univ, Div Mat Sci & Engn, Seoul 04763, South Korea

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2020年 / 313卷

基金：

新加坡国家研究基金会;

关键词：

WS(2)nanoflakes; Au functionalization; Gas sensor; Flexibility; Self-heating; Sensing mechanism; TRANSITION-METAL DICHALCOGENIDES; CARBON-MONOXIDE; HIGHLY TRANSPARENT; MOS2; TEMPERATURE; MONOLAYER; NANOPARTICLES; PERFORMANCE; NANOSHEETS; HUMIDITY;

D O I：

10.1016/j.snb.2020.128040

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A flexible and selective CO gas sensor was fabricated from Au-functionalized two-dimensional (2D) WS2 nanoflakes on polyamide substrate. Au-functionalized 2D WS2 nanoflakes gas sensors fabricated on polyamide can be operated under self-heating mode (1-5 V) with good selectivity to CO gas. Gas sensors fabricated on polyamide not only showed flexibility, but also demonstrated good stability and repeatability. In particular, even after 1000 times tilting, the optimized gas sensor could detect low concentrations of CO gas. The underlying sensing mechanism is discussed in detail. The results indicated the feasibility of realization of low-energy consumption and flexible gas sensors using Au-functionalization on 2D WS2 nanoflakes.

引用

页数：10

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