Real-time NO2 detection at ppb level with ZnO field-effect transistors

Andringa, Anne-Marije; Smits, Edsger C. P.; Klootwijk, J.H.; Leeuw, Dago M. de

doi:10.1016/j.snb.2013.01.026

Cited by 11 publications

(10 citation statements)

References 11 publications

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“…98 The system was flushed with air for 1 h. The measurement protocol was started, and the permeation tube was heated to deliver a certain amount of NO 2 . The signal from the sensor was processed and recorded.…”

Section: Detectionmentioning

confidence: 99%

NO₂ Detection and Real-Time Sensing with Field-Effect Transistors

et al. 2013

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The huge impact of nitrogen dioxide (NO 2 ) emission on public health and the environment is motivating extensive scientific and technological research in the field of NO 2 sensing. Field-effect transistors have emerged as a sensitive and reliable technology for monitoring air quality, due to their amplified sensor response. In this review article, the NO 2 detection mechanism with field-effect transistors is discussed. The origin is charge trapping at the gate dielectric, yielding a threshold voltage shift. The dynamic response can be described by an analytical model. Implementation in a sensor protocol allows for the fabrication of a functional demonstrator. The sensor, based on a ZnO field-effect transistor, is capable of detecting concentrations as low as 40 ppb of NO 2 in real-time. The sensor operates in ambient air, and apart from drying, no further precautions are taken, showing that the fabricated sensor is selective for NO 2 . The results reviewed in this paper set a precedent for sensing with field-effect transistors.

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Section: Detectionmentioning

confidence: 99%

NO₂ Detection and Real-Time Sensing with Field-Effect Transistors

et al. 2013

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“…Organic field‐effect transistor (OFET)‐based gas sensors, the promising candidates of electrical sensing, have received particular attention owing to their intrinsic advantages in ultra‐low‐cost and portage applications . So far, ppm and sub‐ppm detection of humidity, nitrogen dioxide (NO 2 ), sulfur dioxide (SO 2 ), ammonia (NH 3 ), hydrogen sulfide (H 2 S) and phosphate vapors, etc., have been successfully realized utilizing various OFETs. In spite of these encouraging achievements of OFET based gas sensors, some crucial sensing performances such as specificity and reproducibility are still far from satisfactory toward widely detecting applications.…”

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confidence: 99%

Specific and Reproducible Gas Sensors Utilizing Gas‐Phase Chemical Reaction on Organic Transistors

et al. 2014

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“…To understand which was the most sensitive material towards each compound, the performances of the devices were compared directly at the same concentrations, as reported in Figure 7. The interest is to measure very low NO 2 concentrations, which are quite difficult to detect with these kind of devices [81]. Among the three metal oxide devices investigated, only WO 3 was able to produce an appreciable response towards 100 ppb of NO 2 , a concentration much lower than the safety standard requirements.…”

Section: Resultsmentioning

confidence: 99%

Low-Power Detection of Food Preservatives by a Novel Nanowire-Based Sensor Array

Zappa

2019

Foods

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Food preservatives are compounds that are used for the treatment of food to improve the shelf life. In the food industry, it is necessary to monitor all processes for both safety and quality of the product. An electronic nose (or e-nose) is a biomimetic olfactory system that could find numerous industrial applications, including food quality control. Commercial electronic noses are based on sensor arrays composed by a combination of different sensors, which include conductometric metal oxide devices. Metal oxide nanowires are considered among the most promising materials for the fabrication of novel sensing devices, which can enhance the overall performances of e-noses in food applications. The present work reports the fabrication of a novel sensor array based on SnO2, CuO, and WO3 nanowires deposited on top of μHPs provided by ams Sensor Solutions Germany GmbH. The array was tested for the discrimination of four typical compounds added to food products or used for their treatment to increase the shelf life: ethanol, acetone, nitrogen dioxide, and ozone. Results are very promising; the sensors array was able to operate for a long time, consuming less than 50 mW for each single sensor, and principal component analysis (PCA) confirmed that the device was able to discriminate between different compounds.

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Real-time NO2 detection at ppb level with ZnO field-effect transistors

Cited by 11 publications

References 11 publications

NO₂ Detection and Real-Time Sensing with Field-Effect Transistors

NO₂ Detection and Real-Time Sensing with Field-Effect Transistors

Specific and Reproducible Gas Sensors Utilizing Gas‐Phase Chemical Reaction on Organic Transistors

Low-Power Detection of Food Preservatives by a Novel Nanowire-Based Sensor Array

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Real-time NO2 detection at ppb level with ZnO field-effect transistors

Cited by 11 publications

References 11 publications

NO2 Detection and Real-Time Sensing with Field-Effect Transistors

NO2 Detection and Real-Time Sensing with Field-Effect Transistors

Specific and Reproducible Gas Sensors Utilizing Gas‐Phase Chemical Reaction on Organic Transistors

Low-Power Detection of Food Preservatives by a Novel Nanowire-Based Sensor Array

Contact Info

Product

Resources

About

NO₂ Detection and Real-Time Sensing with Field-Effect Transistors

NO₂ Detection and Real-Time Sensing with Field-Effect Transistors