DEVICE COMPRISING A GAS SENSOR SENSITIVE TO THE PRESENCE OF A SPECIFIC GAS, METHOD OF MANUFACTURING A GAS SENSOR SENSITIVE TO THE PRESENCE OF A SPECIFIC GAS FOR USE IN THE DEVICE AND USE OF THE DEVICE
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United States of America Patent
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Issued Date -
Nov 1, 2012
app pub date -
Apr 27, 2012
filing date -
Apr 28, 2011
priority date (Note) -
Abandoned
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Abstract
A device including a gas sensor sensitive to the presence of a specific gas is disclosed. In one aspect, the gas sensor includes a first segment made of a dielectric material and a second segment made of a semiconducting material. The first segment has a first surface exposed to an environment of the gas sensor and is located between the environment and the second segment. The first segment has a first thickness and the second segment has a second thickness. The first thickness is selected such that upon diffusion of a gas molecule of the specific gas into the first segment, a dipole of the molecule of the specific gas detectably influences a bending of an energy-band structure of the semiconducting material of the second segment. The second thickness is in the order of, or smaller than, the Debye length of the semiconducting material.
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