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Room-temperature oxygen sensitivity of ZnS nanobelts
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10.1063/1.2432278
/content/aip/journal/apl/90/4/10.1063/1.2432278
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/4/10.1063/1.2432278
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

XRD patterns of ZnS nanobelts.

Image of FIG. 2.
FIG. 2.

(a) SEM image of ZnS nanobelts; the inset is Au–ZnS alloy nanoparticle at the tip of nanobelt. (b) High-resolution TEM image of ZnS nanobelts; the inset is the selected area electron diffraction (SAED) patterns of ZnS nanobelts. (c) SEM image of the oxygen-sensing device. (d) Photoluminescence spectra of ZnS nanobelts.

Image of FIG. 3.
FIG. 3.

Response of ZnS nanobelt to different oxygen pressures without or with UV illumination; the inset shows the logarithmic oxygen pressure dependence of conductance of ZnS nanobelt.

Image of FIG. 4.
FIG. 4.

Schematic energy band illustration of response to UV illumination and the interaction with oxygen. (a) Without illumination, the adsorption of oxygen molecules traps electrons from ZnS nanobelt. (b) Under illumination, the chemisorbed oxygen ions trap the photoexcited holes and liberate from the surface of ZnS nanobelt.

Image of FIG. 5.
FIG. 5.

Four cycle switching between low and high conductance states. The oxygen pressure is and the bias applied to the nanobelt is .

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/content/aip/journal/apl/90/4/10.1063/1.2432278
2007-01-26
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Room-temperature oxygen sensitivity of ZnS nanobelts
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/4/10.1063/1.2432278
10.1063/1.2432278
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