August 2013
Intermediate to advanced
576 pages
17h 9m
English
Content preview from Semiconductor Gas Sensors
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5
Recent advances in wide bandgap semiconductor-based gas sensors
F. Ren and S.J. Pearton, University of Florida, USA
Abstract:
We review recent progress in wide bandgap thin-film and nanorod sensors made from GaN or ZnO and related materials for applications in the detection of gases such as oxygen, carbon dioxide and hydrogen. Practical aspects are covered, such as the use of differential sensor pairs to eliminate the effects of temperature variations and of the effect of humidity on the detection sensitivity.
Key words
gallium nitride
zinc oxide
heterostructure
nanorods
semiconductors
5.1 Introduction
Semiconductor-based sensors can be fabricated using mature techniques from the Si chip industry and/or novel nanotechnology approaches. ...
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