Metal Decoration Effects on the Gas-Sensing Properties of 2D Hybrid-Structures on Flexible Substrates

被引：42

作者：

Cho, Byungjin ^{[1
]}

Yoon, Jongwon ^{[2
]}

Lim, Sung Kwan ^{[3
]}

Kim, Ah Ra ^{[1
]}

Choi, Sun-Young ^{[1
]}

Kim, Dong-Ho ^{[1
]}

Lee, Kyu Hwan ^{[4
]}

Lee, Byoung Hun ^{[2
,3
]}

Ko, Heung Cho ^{[2
]}

Hahm, Myung Gwan ^{[1
]}

机构：

[1] Korea Inst Mat Sci, Surface Technol Div, Adv Funct Thin Films Dept, Chang Won 642831, Gyeongnam, South Korea

[2] Gwangju Inst Sci & Technol, Sch Mat Sci & Engn, Gwangju 500712, South Korea

[3] Gwangju Inst Sci & Technol, Dept Nanobio Mat & Elect, Gwangju 500712, South Korea

[4] Korea Inst Mat Sci, Surface Technol Div, Electrochem Dept, Chang Won 642831, Gyeongnam, South Korea

来源：

SENSORS | 2015年 / 15卷 / 10期

基金：

新加坡国家研究基金会;

关键词：

MoS2; graphene; 2D hybrid-structure; metal decoration; flexible gas sensor; SINGLE-LAYER; MOS2; ELECTRONICS; MULTILAYER; NANOSHEETS; MONOLAYER;

D O I：

10.3390/s151024903

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

We have investigated the effects of metal decoration on the gas-sensing properties of a device with two-dimensional (2D) molybdenum disulfide (MoS2) flake channels and graphene electrodes. The 2D hybrid-structure device sensitively detected NO2 gas molecules (>1.2 ppm) as well as NH3 (>10 ppm). Metal nanoparticles (NPs) could tune the electronic properties of the 2D graphene/MoS2 device, increasing sensitivity to a specific gas molecule. For instance, palladium NPs accumulate hole carriers of graphene/MoS2, electronically sensitizing NH3 gas molecules. Contrarily, aluminum NPs deplete hole carriers, enhancing NO2 sensitivity. The synergistic combination of metal NPs and 2D hybrid layers could be also applied to a flexible gas sensor. There was no serious degradation in the sensing performance of metal-decorated MoS2 flexible devices before/after 5000 bending cycles. Thus, highly sensitive and endurable gas sensor could be achieved through the metal-decorated 2D hybrid-structure, offering a useful route to wearable electronic sensing platforms.

引用

页码：24903 / 24913

页数：11

共 39 条

[1]

Cho B., 2015, SCI REP, V5, DOI [10. 1038/srep08052 25623472, DOI 10.1038/SREP0805225623472]

[2] Chemical Sensing of 2D Graphene/MoS2 Heterostructure device [J].