Alcohol Sensitive Materials and Semiconductor Alcohol Sensors
An alcohol sensor and sensitive material technology, applied in the field of gas detection, can solve the problems of poor ethanol detection selectivity, low response sensitivity, high price, etc., and achieve the effects of improving sensitivity and selectivity, high degree of integration, and simple structure
Active Publication Date: 2017-10-20
NANJING YIDEGUAN ELECTRONICS TECH
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Most of the existing alcohol sensors are fuel cell type, although they have high precision, they are expensive
Semiconductor alcohol sensors based on intrinsic metal oxides generally have low response sensitivity to reducing gases, and it is particularly important that metal oxide sensors are sensitive to most reducing gases, so the selectivity to ethanol detection is poor
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0027] The technical solution of the present invention will be described in detail below in conjunction with the drawings:
[0028] The inventive idea of the present invention is to change the semiconductor properties of divalent and tetravalent oxide semiconductors by doping on the surface of high-valent oxide semiconductors, so that the barrier of metal oxide grain boundaries is reduced, the conductance is increased, and the sensitivity of materials and the selection of gases are improved. Performance, while reducing the reaction temperature of the material and gas. The invention specifically prepares an alcohol-sensitive material by doping zinc oxide, tin oxide or a mixture of both niobium pentoxide or / and titanium dioxide, which is more sensitive to alcohol than existing metal oxide sensors. The material can be increased by an order of magnitude, while the selectivity sensitivity to other volatile organic gases is increased by 5 times, and the reaction temperature is reduce...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses an alcohol sensitive material and a semiconductor alcohol sensor, belonging to the technical field of gas detection. The alcohol-sensitive material of the present invention is niobium pentoxide or / and titanium dioxide doped zinc oxide, or niobium pentoxide or / and titanium dioxide doped tin oxide, or niobium pentoxide or / and titanium dioxide doped Tin oxide / zinc oxide mixture. The semiconductor alcohol sensor of the present invention includes heating and detection components and a sensitive layer made of the alcohol sensitive material of the present invention. The present invention uses niobium pentoxide or / and titanium dioxide to dope zinc oxide, tin oxide or a mixture of the two, so that the sensitivity of the metal oxide sensing material to alcohol is increased by an order of magnitude, and the selectivity to other volatile organic gases Increased by 5 times, and reduced the reaction temperature. The semiconductor alcohol sensor of the invention has the advantages of simple structure and high degree of integration, and can be prepared by various mature semiconductor technology.
Description
Technical field [0001] The invention relates to an alcohol sensitive material and a semiconductor alcohol sensor based on the alcohol sensitive material, belonging to the technical field of gas detection. Background technique [0002] High-precision alcohol detection and monitoring have extremely wide applications in industrial applications and traffic management. In the actual work of the traffic control department, the breath alcohol content test is usually used to judge whether the driver is drunk and driving. The breath alcohol tester uses an alcohol sensor to measure the alcohol content in the breath of the testee. Commonly used alcohol sensors include semiconductor type and fuel cell type. Existing alcohol sensors are mostly fuel cell types, although they have high accuracy but are expensive. Semiconductor alcohol sensors based on intrinsic metal oxides generally have low sensitivity to reducing gases. It is particularly important that metal oxide sensors are sensitive to...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/26
Inventor 章伟李雨桐秦薇薇李涛
Owner NANJING YIDEGUAN ELECTRONICS TECH