An ethanol sensor based on a zinc oxide nanometer structure and a preparing method thereof

A zinc oxide nano and zinc oxide nanowire technology, applied in the field of sensors, can solve the problems of complex preparation process, low sensitivity, and long response time, and achieve the effect of simple preparation process, high sensitivity, and fast response time
CN104698041AActive Publication Date: 2015-06-10纳米新能源生命科技(唐山)有限责任公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
纳米新能源生命科技(唐山)有限责任公司
Publication Date
2015-06-10

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Abstract

An ethanol sensor based on a zinc oxide nanometer structure and a preparing method thereof are provided. The ethanol sensor comprises two electrode groups forming an interdigitated electrode and a zinc oxide nanometer film on at least one side surface of the interdigitated electrode. The zinc oxide nanometer film is formed by zinc oxide nanowires having a hexagonal wurtzite crystal phase. The two electrode groups of the interdigitated electrode are not conducted and form signal output ends of the ethanol sensor. The ethanol sensor can sense resistance reduction on the zinc oxide surface caused by ethanol absorption. The responsivity of the ethanol sensor is in approximate linear variation with the concentration of added ethanol gas in the environment.
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Description

technical field

[0001] The invention relates to the field of sensors, in particular to an ethanol sensor based on a zinc oxide nanostructure and a preparation method thereof. Background technique

[0002] In 2006, Professor Wang Zhonglin of Georgia Institute of Technology in the United States successfully converted mechanical energy into electrical energy in the nanoscale range, and developed the world's smallest generator - nanogenerator. The basic principle of nanogenerators is that when nanowires (NWs, such as ZnO nanowires) are dynamically stretched under an external force, a piezoelectric potential is generated in the nanowire, and a corresponding transient current flows at both ends to balance the Fermi level. .

[0003] ZnO nanowires, as semiconductor materials, can be used in ethanol sensors. Then the existing ethanol sensor has the defects of low sensitivity, long response time and complicated preparation process due to the preparation method of zinc oxide nanowir...

Claims

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