Detection of ethanol gas using In2O3 nanoparticle-decorated ZnS nanowires

Kim, Kyoung-Kook; Kim, Dong‐Jun; Kang, Soo-Hyun; Park, Sunghoon

doi:10.1016/j.snb.2017.03.120

Cited by 46 publications

(8 citation statements)

References 41 publications

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“…A similar material system as we used, composed of In 2 O 3 -decorated ZnS NWs, also acquired higher sensitivity and lower operating temperature than the pristine sensor [16]. In the research work by Choi, Cr 2 O 3 -functionalized WO 3 with p-n junction was facilely synthesized by coating Cr 2 O 3 on the nanorods substrate.…”

Section: Resultsmentioning

confidence: 99%

CeO2 Enhanced Ethanol Sensing Performance in a CdS Gas Sensor

Ren

et al. 2017

Sensors

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CdS nanowires (NWs) were fabricated through a facile low-temperature solvothermal method, following which CeO2 nanoparticles were modified on the NWs. The ethanol sensing characteristics of pure CdS and decorated ones with different CeO2 content were studied. It was found that the sensing performance of CdS was significantly improved after CeO2 decoration. In particular, the 5 at% CeO2/CdS composite exhibited a much higher response to 100 ppm ethanol (about 52), which was 2.6 times larger than that of pure CdS. A fast response and recovery time (less than 12 s and 3 s, respectively) were obtained as well as an excellent selectivity. These results make the CeO2-decorated CdS NWs good candidates for ethanol sensing applications.

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Section: Resultsmentioning

confidence: 99%

CeO2 Enhanced Ethanol Sensing Performance in a CdS Gas Sensor

Ren

et al. 2017

Sensors

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“…Because this flexible film has a high transmittance value without losing its electrical properties, the film can be used for diverse applications such as gas sensors, , touch screens, solar cells, and organic light-emitting diodes . Also, the biocompatibility of nitrocellulose is high due to its extraction from wood. , The unique properties of the substrates of being lightweight, flexible, transparent, and thin play a key role in daily life.…”

Section: Discussionmentioning

confidence: 99%

An Implantable Transparent Conductive Film with Water Resistance and Ultrabendability for Electronic Devices

Song

Kim²,

Heller³

2017

ACS Appl. Mater. Interfaces

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Recently, instead of indium tin oxide, the random mesh pattern of metallic nanowires for flexible transparent conducting electrodes (FTCEs) has received a great amount of interest due to its flexibility, low resistance, reasonable price, and compliant processes. Mostly, nanowires for FTCEs are fabricated by spray or mayer coating methods. However, the metallic nanowire layer of FTCEs, which is fabricated by these methods, has a spiked surface roughness and low junction contact between the nanowires that lead to their high sheet resistance value. Also, the nanowires on FTCEs are easy to peel-off through exterior forces such as bending, twisting, or contact. To solve these problems, we demonstrate novel methods through which silver nanowires (AgNWs) are deposited onto a nanosize porous nitrocellulose (NC) substrate by electrophoretic deposition (EPD) and an opaque and porous substrate. Respectively, through dimethyl sulfoxide treatment, AgNWs on NC (AgNW/NC) is changed to the transparent and nonporous FTCEs. This enhances the junction contact of the AgNWs by EPD and also allows a permanent attachment of AgNWs onto the substrate. To show the mechanical strength of the AgNWs on the transparent nitrocellulose (AgNW/TNC), it is tested by applying diverse mechanical stress, such as a binding test (3M peel-off), compressing, bending, twisting, and folding. Next, we demonstrate that AgNW/TNC can be effectively implanted onto normal newspapers and papers. As paper electronics, light-emitting diodes, which are laminated onto paper, are successfully operated through a basic AgNW/TNC strip circuit. Finally, it is demonstrated that AgNW/TNC and AgNW/TNC on paper are water resistant for 15 min due to the insulation properties of the nonporous substrate.

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“…Among these metal oxides, nano-sized In2O3 is considered as one of the promising candidate materials to detect many hazardous gases including H2S [17], NO2 [18], CO [19], H2 [20] and C2H5OH [21] etc. In particular, NO2 or H2S sensors based on In2O3 nanostructures have been frequently reported in recent years [6,[22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%