Bifunctional Sensing Characteristics of Chemical Vapor Deposition Synthesized Atomic-Layered MoS2

被引：181

作者：

Cho, Byungjin ^{[1
]}

Kim, Ah Ra ^{[1
]}

Park, Youngjin ^{[1
]}

Yoon, Jongwon ^{[2
]}

Lee, Young-Joo ^{[1
]}

Lee, Sangchul ^{[2
]}

Yoo, Tae Jin ^{[2
]}

Kang, Chang Goo ^{[2
]}

Lee, Byoung Hun ^{[2
]}

Ko, Heung Cho ^{[2
]}

Kim, Dong-Ho ^{[1
]}

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, Kwangju 500712, South Korea

来源：

ACS APPLIED MATERIALS & INTERFACES | 2015年 / 7卷 / 04期

基金：

新加坡国家研究基金会;

关键词：

MoS2; CVD synthesis; gas sensor; photodetector; bifunctional sensor; FEW-LAYER; MONOLAYER MOS2; THIN-LAYERS; LARGE-AREA; GRAPHENE; GROWTH; PHOTODETECTORS; FILMS;

D O I：

10.1021/am508535x

中图分类号：

TB3 [工程材料学];

学科分类号：

082905 [生物质能源与材料];

摘要：

Two-dimensional (2D) molybdenum disulfide (MoS2) atomic layers have a strong potential to be adopted for 2D electronic components due to extraordinary and novel properties not available in their bulk foams. Unique properties of the MoS2, including quasi-2D crystallinity, ultrahigh surface-to-volume, and a high absorption coefficient, have enabled high-performance sensor applications. However, implementation of only a single-functional sensor presents a limitation for various advanced multifunctional sensor applications within a single device. Here, we demonstrate the charge-transfer-based sensitive (detection of 120 ppb of NO2) and selective gas-sensing capability of the chemical vapor deposition synthesized MoS2 and good photosensing characteristics, including moderate photoresponsivity (similar to 71 mA/W), reliable photoresponse, and rapid photoswitching (<500 ms). A bifunctional sensor within a single MoS2 device to detect photons and gas molecules in sequence is finally demonstrated, paving a way toward a versatile sensing platform for a futuristic multifunctional sensor.

引用

页码：2952 / 2959

页数：8

共 41 条

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Patterning, Characterization, and Chemical Sensing Applications of Graphene Nanoribbon Arrays Down to 5 nm Using Helium Ion Beam Lithography [J].