Chemical Sensing of 2D Graphene/MoS2 Heterostructure device

被引：407
作者：
Cho, Byungjin [1 ]
Yoon, Jongwon [2 ]
Lim, Sung Kwan [2 ]
Kim, Ah Ra [1 ]
Kim, Dong-Ho [1 ]
Park, Sung-Gyu [1 ]
Kwon, Jung-Dae [1 ]
Lee, Young-Joo [1 ]
Lee, Kyu-Hwan [3 ]
Lee, Byoung Hun [2 ]
Ko, Heung Cho [2 ]
Hahm, Myung Gwan [1 ]
机构：
[1] Korea Inst Mat Sci, Dept Adv Funct Thin Films, Surface Technol Div, Chang Won 642831, Gyeongnam, South Korea
[2] Gwangju Inst Sci & Technol, Sch Mat Sci & Engn, Gwangju 500712, South Korea
[3] Korea Inst Mat Sci, Electrochem Dept, Surface Technol Div, Chang Won 642831, Gyeongnam, South Korea
来源：
ACS APPLIED MATERIALS & INTERFACES | 2015年 / 7卷 / 30期
基金：
新加坡国家研究基金会;
关键词：
MoS2; graphene; gas sensor; heterostructure; flexible device; LAYER MOS2; SINGLE-LAYER; RAMAN-SCATTERING; CHARGE-TRANSFER; GAS MOLECULES; LARGE-AREA; MONOLAYER; IDENTIFICATION; ELECTRONICS; TRANSISTORS;
D O I：
10.1021/acsami.5b04541
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We report the production of a two-dimensional (2D) heterostructured gas sensor. The gas-sensing characteristics of exfoliated molybdenum disulfide (MoS2) connected to interdigitated metal electrodes were investigated. The MoS2 flake-based sensor detected a NO2 concentration as low as 1.2 ppm and exhibited excellent gas-sensing stability. Instead of metal electrodes, patterned graphene was used for charge collection in the MoS2-based sensing devices. An equation based on variable resistance terms was used to describe the sensing mechanism of the graphene/MoS2 device. Furthermore, the gas response characteristics of the heterostructured device on a flexible substrate were retained without serious performance degradation, even under mechanical deformation. This novel sensing structure based on a 2D heterostructure promises to provide a simple route to an essential sensing platform for wearable electronics.
引用
收藏
页码：16775 / 16780
页数：6
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