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US 10,379,095 B2Granted
Gas sensor element
AssigneeNitto Denko Corporation
InventorsEkambaram Sambandan, Jie Cai, Hiroyuki Katayama
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Abstract
Described herein are devices for detecting the concentration of acetone gas. Some gas sensor devices comprise: a gas sensor element that includes a boron-doped the polycrystalline n-type semiconductor epsilon WO3. In addition, multi-detector gas sensor elements are also described including at least one based on the aforementioned gas sensor element where the other elements differ in material properties. In addition, methods for detecting acetone gas based on the disclosed elements are also described.
Claims12
A gas sensor element comprising a first sensor comprising:
- a first electrode, a second electrode, and a first polycrystalline n-type semiconductor material;
- wherein the first electrode and the second electrode are separated by a gap of about 1 mil to about 10 mils;
- and wherein the first polycrystalline n-type semiconductor material comprises boron-doped WO3 that is doped or loaded with Pt, V, Sm, CuO, or a combination thereof;
- and the first polycrystalline n-type semiconductor material is in physical contact with both the first electrode and the second electrode.
1 more element
Dependencies are inferred from the claim text.