Enhanced optical sensitivity of molybdenum diselenide (MoSe_2) coated side polished fiber for humidity sensing

Ouyang, Tenghui; Lin, Li-Min; Xia, Kai; Jiang, Mengjiang; Lang, Yuwei; Guan, Heyuan; Yu, Jianhui; Li, Dongquan; Chen, Guanglei; Zhong, Yi; Tang, Jieyuan; Dong, Jiangli; Lu, Huihui; Luo, Yunhan; Zhang, Jun; Chen, Zhe

doi:10.1364/oe.25.009823

Cited by 46 publications

(11 citation statements)

References 48 publications

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“…It has a low bandgap (1.1–1.5 eV) and an appreciable mobility (≈50 cm 2 V −1 s −1 ), which allow the fabrication of switchable transistors and sensitive photodetectors devices. Thanks to its optical properties, it also proved to be a good candidate for the fabrication of fiber-optic humidity detectors [ 83 ]. Chemical vapor deposition (CVD), briefly illustrated in Figure 10 , is the most common technique to prepare very thin flakes directly on target substrates [ 84 , 85 , 86 ], for the fabrication of functional devices.…”

Section: Molybdenum Diselenide (Mose 2 ) Chemicmentioning

confidence: 99%

Molybdenum Dichalcogenides for Environmental Chemical Sensing

Zappa

2017

Materials

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2D transition metal dichalcogenides are attracting a strong interest following the popularity of graphene and other carbon-based materials. In the field of chemical sensors, they offer some interesting features that could potentially overcome the limitation of graphene and metal oxides, such as the possibility of operating at room temperature. Molybdenum-based dichalcogenides in particular are among the most studied materials, thanks to their facile preparation techniques and promising performances. The present review summarizes the advances in the exploitation of these MoX2 materials as chemical sensors for the detection of typical environmental pollutants, such as NO2, NH3, CO and volatile organic compounds.

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Section: Molybdenum Diselenide (Mose 2 ) Chemicmentioning

confidence: 99%

Molybdenum Dichalcogenides for Environmental Chemical Sensing

Zappa

2017

Materials

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“…Different functional materials have been used to integrate with the fiber optics platform to enhance the sensitivities toward gas molecules as gas–matter–light interaction is much stronger than that of light gas 2a,6. Typical materials include polymers,1a,7 metal oxides coated with metallic catalysts,1b,8 and more recently 2D materials (e.g., graphene, graphene oxide,2d,10 and transition metal dichalcogenide materials) …”

Section: Introductionmentioning

confidence: 99%

2D Plasmonic Tungsten Oxide Enabled Ultrasensitive Fiber Optics Gas Sensor

Yao

Ren

et al. 2019

Advanced Optical Materials

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Functional materials coated on optical fibers have demonstrated great potential for optical gas sensing applications. However, their sensitivity is typically limited to the sub‐parts per million (sub‐ppm) range. Here, for the first time a 2D near‐infrared plasmonic tungsten oxide (WOx) enabled ultrasensitive fiber optics gas sensor on a side‐polished D‐shape single mode optical fiber is presented. The plasmon resonance wavelength range of 2D WOx is matched with a conventional telecommunications wavelength of 1550 nm for driving the optical fiber, therefore inducing a strong light–matter interaction. Upon the surface adsorption of gas molecules, free electrons in the 2D WOx body are redistributed changing the plasmon resonance properties and hence the transmission through the optical fiber. The sensor is selectively responsive to NO2 at concentrations down to 44 parts per billion (ppb) with a limit of detection of 8 ppb at a relatively low elevated temperature. Such an excellent sensing performance is significantly improved over the previously reported fiber optics NO2 sensors, which suggests the integration of 2D plasmonic degenerated semiconductors as a viable approach to develop high‐performance fiber optics gas sensors.

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“…Various types of optical fiber RH sensors have been proposed with different approaches. Firstly, the amplitude-based techniques detect the change of the optical intensity [3,4,5]. Secondly, the wavelength shift technique is immune to power fluctuation noise, when compared with the optical intensity technique [6,7,8,9,10,11,12,13].…”

Section: Introductionmentioning

confidence: 99%

Humidity Sensor Based on a Long-Period Fiber Grating Coated with Polymer Composite Film

Wang

Liu

Zou

et al. 2019

Sensors

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We demonstrate a simple and highly sensitive optical fiber relative humidity (RH) sensor based on a long-period fiber grating (LPFG) coated with polyethylene glycol (PEG)/polyvinyl alcohol (PVA) composite films. The resonance wavelength of the LPFG is sensitive to environmental humidity due to the change in effective refractive index caused by the strong surface absorption and desorption of the porous PEG/PVA coatings. The sensor is sensitive in a wide range from 50% to 95% RH, with a highest sensitivity of 2.485 nm/%RH in the range 50–75% RH. The proposed RH sensor has the advantages of compact size, good reversibility, and stability, which makes it attractive for high-humidity environments.

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Enhanced optical sensitivity of molybdenum diselenide (MoSe_2) coated side polished fiber for humidity sensing

Cited by 46 publications

References 48 publications

Molybdenum Dichalcogenides for Environmental Chemical Sensing

Molybdenum Dichalcogenides for Environmental Chemical Sensing

2D Plasmonic Tungsten Oxide Enabled Ultrasensitive Fiber Optics Gas Sensor

Humidity Sensor Based on a Long-Period Fiber Grating Coated with Polymer Composite Film

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