April 2016
Intermediate to advanced
324 pages
14h 53m
English
book
Semiconductor Device-Based Sensors for Gas, Chemical, and Biomedical Applications
by Fan Ren, Stephen J Pearton
Content preview from Semiconductor Device-Based Sensors for Gas, Chemical, and Biomedical Applications
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Advances in Hydrogen Gas Sensor Technology 117
© 2011 by Taylor & Francis Group, LLC
Having established improved sensitivity by coating the nanorods with catalytic metal, we then
investigated the effects of different metals to further improve sensitivity and response. Using
the same coating procedure described earlier, we investigated the effect of metal coatings of Ti,
Ni, Ag, Au, Pt, and Pd. Figure3.26 shows the time dependence of relative resistance change of
either metal-coated or uncoated multiple ZnO nanorods as the gas ambient is switched from air to
500 ppm of H
2
in N
2
. These were measured at a bias voltage of 0.5 V. The ...
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