A ZnO nanowire-based humidity sensor

Chang, Shoou Jinn; Chang, Shoou‐Jinn; Lu, Chien-Yuan; Li, Meng-Ju; Hsu, Cheng-Liang; Chiou, Yu−Zung; Hsueh, Ting-Jen; Chen, I-Cherng

doi:10.1016/j.spmi.2010.03.006

Cited by 124 publications

(56 citation statements)

References 29 publications

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“…ZnO NRs/NWs are extensively applied in various sensing applications fields, e.g. biosensors [44][45][46][47][48][49][50][51], biomarker [52][53], drug delivery [54][55] , chemical sensors [56][57][58], gas sensors [59][60], pH sensors [61], humidity sensor [62][63][64], UV sensors [65][66][67][68][69], temperature sensors [70][71], and pressure/force/mass/load sensors [72][73][74][75]. Also, the high performances of several types of sensors have been enhanced by utilizing different metals doped ZnO nanorods, e.g.…”

Section: Sensing Applications Based On Zno and Tm-doped Zno Nanostrucmentioning

confidence: 99%

Synthesis of ZnO and transition metals doped ZnO nanostructures, their characterization and sensing applications

Chey

2015

Linköping Studies in Science and Technology. Dissertations

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Section: Sensing Applications Based On Zno and Tm-doped Zno Nanostrucmentioning

confidence: 99%

Synthesis of ZnO and transition metals doped ZnO nanostructures, their characterization and sensing applications

Chey

2015

Linköping Studies in Science and Technology. Dissertations

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“…At low humidity the chemisorbed lead to generate with a small amount of water molecules exposed to the nanocubic structured ZnO/SnO 2 . The water molecules adsorbed on the nanocubic structured ZnO/SnO 2 react reversibly with Zn lattice according to the following reaction (Chang et al 2010):…”

Section: Humidity Sensor Propertiesmentioning

confidence: 99%

Fabrication of nanocubic ZnO/SnO2 film-based humidity sensor with high sensitivity by ultrasonic-assisted solution growth method at different Zn:Sn precursor ratios

et al. 2013

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We fabricated humidity sensor using nanocubic ZnO/SnO 2 prepared via sol-gel and immersion method deposited on sputtered ZnO-film-coated glass substrate. These combination methods were used to grow nanocubic structured ZnO/SnO 2 at different molar ratios Zn:Sn for the first time. The experiment was conducted at difference molar ratio of Zn:Sn by varying the molar of Zn. The size of the cube reduces as the Zn molar increase. The luminescence of nanocubic structured ZnO/SnO 2 was indicated around 400 and 600 nm corresponding to the ultra-violet (UV) emission and visible emission, respectively. The composition of molar ratio 10:10 of nanocubic structured ZnO/SnO 2 gives the best sensitivity of 104 times for humidity sensor properties. Nanocubic structured ZnO/ SnO 2 have a great potential for humidity sensor application with high response (411 s) and recovery times (98 s), repeatability and good in stability.

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“…The interaction of water with ZnO surfaces is still poorly understood in part due to the complex mechanism of water adsorption on metal oxide surfaces, such as ZnO [31]. However, this effect has been already proposed to be used in the design of humidity sensors based on ZnO bulk [32], TFs [33,34], NWs [35,36], nanorods [37,38], and nanotubes [39].…”

Section: Chemical Composition and Microstructurementioning

confidence: 99%

Comparative study on the properties of ZnO nanowires and nanocrystalline thin films

Broitman

Bojorge

Elhordoy³

et al. 2012

Surface and Coatings Technology

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The microstructural, morphological, optical and water-adsorption properties of nanocrystalline ZnO thin films and ZnO nanowires were studied and compared. The ZnO thin films were obtained by a sol–gel process, while the ZnO nanowires were electrochemically grown onto a ZnO sol–gel spin-coated seed layer. Thin films and nanowire samples were deposited onto crystalline quartz substrates covered by an Au electrode, able to be used in a quartz crystal microbalance. X-ray diffraction measurements reveal in both cases a typical diffraction pattern of ZnO wurtzite structure. Scanning electron microscopic images of nanowire samples show the presence of nanowires with hexagonal sections, with diameters ranging from 30 to 90 nm. Optical characterization reveals a bandgap energy of 3.29 eV for the nanowires and 3.35 eV for the thin films. A quartz crystal microbalance placed in a vacuum chamber was used to quantify the amount and kinetics of water adsorption onto the samples. Nanowire samples, which have higher surface areas than the thin films, adsorb significantly more water

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A ZnO nanowire-based humidity sensor

Cited by 124 publications

References 29 publications

Synthesis of ZnO and transition metals doped ZnO nanostructures, their characterization and sensing applications

Synthesis of ZnO and transition metals doped ZnO nanostructures, their characterization and sensing applications

Fabrication of nanocubic ZnO/SnO2 film-based humidity sensor with high sensitivity by ultrasonic-assisted solution growth method at different Zn:Sn precursor ratios

Comparative study on the properties of ZnO nanowires and nanocrystalline thin films

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