An ammonia gas sensor of graphene transistor
By using graphene transistor structure and differential circuit, and taking advantage of the adsorption capacity and conductivity of graphene oxide, the problems of low accuracy and poor selectivity in the detection of low-concentration gases in existing gas sensors are solved, and highly sensitive ammonia detection is achieved.
CN224328089UActive Publication Date: 2026-06-05JIANGSU OCEAN UNIV
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU OCEAN UNIV
- Filing Date
- 2025-05-29
- Publication Date
- 2026-06-05
Smart Images
Figure CN224328089U_ABST
Abstract
The utility model relates to the technical field of gas sensor, specifically disclose a kind of ammonia gas sensor of graphene transistor, including substrate, preferably glass substrate, the top of substrate is provided with first electrode and second electrode, the thickness of first electrode, second electrode is 15nm or 100nm, and material is Ti or Au;First electrode and second electrode between being provided with channel, channel is graphene channel or graphene oxide channel, the top of channel is provided with graphene oxide fragment, and the graphene oxide fragment is discrete graphene oxide fragment of drop coating. The sensor makes full use of the adsorption capacity of graphene oxide, the conductive characteristics of graphene and the isomorphism of both, to greatly enhance gas sensitive characteristics.
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