Methods of selectivity improvements of semiconductor gas sensors

Halek, G.; Malewicz, Miroslaw; Teterycz, Helena

doi:10.1109/stysw.2009.5470313

Cited by 5 publications

(3 citation statements)

References 15 publications

(12 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Au nanoparticle gas sensors for VOC detection [21] nanoparticles increasing the gas sensing active area [22. 23]) or introducing catalytically active additives by bulk doping and surface modification [24].…”

Section: Semiconductor Gas Sensorsmentioning

confidence: 99%

Detection of Gaseous Compounds with Different Techniques

Mikołajczyk

Bielecki

Stacewicz

et al. 2016

Metrology and Measurement Systems

View full text Add to dashboard Cite

Sensing technology has been developed for detection of gases in some environmental, industrial, medical, and scientific applications. The main tasks of these works is to enhance performance of gas sensors taking into account their different applicability and scenarios of operation. This paper presents the descriptions, comparison and recent progress in some existing gas sensing technologies. Detailed introduction to optical sensing methods is presented. In a general way, other kinds of various sensors, such as catalytic, thermal conductivity, electrochemical, semiconductor and surface acoustic wave ones, are also presented. Furthermore, this paper focuses on performance of the optical method in detecting biomarkers in the exhaled air. There are discussed some examination results of the constructed devices. The devices operated on the basis of enhanced cavity and wavelength modulation spectroscopies. The experimental data used for analyzing applicability of these different sensing technologies in medical screening. Several suggestions related to future development are also discussed.

show abstract

Section: Semiconductor Gas Sensorsmentioning

confidence: 99%

Detection of Gaseous Compounds with Different Techniques

Mikołajczyk

Bielecki

Stacewicz

et al. 2016

Metrology and Measurement Systems

View full text Add to dashboard Cite

show abstract

“…In order to improve sensitivity of the sensor different methods had been used including temperature modulation, synthesis of new sensor materials, designing new sensor constructions, adoption of new filter layers and using of sensor array. Therefore, Grzegorz Halek et al [49] made a comparison on methods of selectivity improvements of semiconductor gas sensors and concluded that the kind of sensing material and filter layer have a strong influence on the sensor parameter.…”

Section: Operation Principle Of One-electrode Semiconductor Gas Sensorsmentioning

confidence: 99%

Gas Sensors- A Review

Yunusa

Hamidon

Kaiser

et al. 2015

J. Environ. Nanotechnol.,

View full text Add to dashboard Cite

In this paper a review of different technologies for gas sensors is presented. The different types of gas sensors technologies including catalytic gas sensor, electrochemical gas sensors, thermal conductivity gas sensor, optical gas sensor and acoustic gas sensor are discussed together with their principle of operation. The Surface Acoustic Wave Gas Sensor technology is discussed in greater detail. The advantages and disadvantages of each sensor technology are also highlighted. All these technologies have been used for several decades for the development of highly sensitive and responsive gas sensors for the detection of flammable and hazardous gases. However, for improved sensitivity and selectivity for these sensors, future trends and outlook for researchers are suggested in the conclusion of this article.

show abstract

“…Nanostructures of tungsten trioxide (WO 3 ), tin dioxide (SnO 2 ), and zinc oxide (ZnO) have extensively been considered for NO 2 sensing because of their key attributes such as fast response and sensitive detection, portability, and cost-effectiveness. , Particularly, WO 3 is highly capable of NO 2 sensing owing to its unique selectivity to NO 2 , high catalytic activity, and low cost. ,− However, its NO 2 -sensing properties are still limited and can be further enhanced by optimizing its structural and chemical properties with effective preparation methods and appropriate catalytic additives. , Among available additives, transition metals including gold (Au), , zinc (Zn), silver (Ag), ruthenium (Ru), platinum (Pt), and lanthanum (La) − have been explored to augment gas selectivity and responsivity of WO 3 . Table reports NO 2 -sensing characteristics of nanomaterials based on WO 3 with different additives fabricated by several methods.…”

Section: Introductionmentioning

confidence: 99%

Flame-Spray-Synthesized La₂O₃-Loaded WO₃ Nanoparticle Films for NO₂ Sensing

Siriwalai

Punginsang

Inyawilert

et al. 2023

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

In this investigation, flame-made La 2 O 3 -loaded WO 3 nanoparticle films prepared with varying La contents (0−2 wt %) and spin-coating cycle numbers (1−6) were comprehensively explored for nitrogen dioxide (NO 2 ) detection. Detailed material analysis revealed the creation of secondary La 2 O 3 nanoparticles on primary monoclinic WO 3 nanoparticles. Gassensing measurements were conducted toward 50−5000 ppb NO 2 at 100−350 °C in dry and humid air (0−80 %RH). The obtained data dictated that the La content of 0.2 wt % and three spincoating cycles provided optimal NO 2 response and response time. Consequently, the 0.2 wt % La 2 O 3 -loaded WO 3 three-cycle spincoated film offered an ultrahigh response of ∼7213.6 and a response time of ∼31.8 s to 5000 ppb NO 2 at a low best sensing temperature of 150 °C in dry air. Moreover, high NO 2 selectivity was attained relative to CH

show abstract

Methods of selectivity improvements of semiconductor gas sensors

Cited by 5 publications

References 15 publications

Detection of Gaseous Compounds with Different Techniques

Detection of Gaseous Compounds with Different Techniques

Gas Sensors- A Review

Flame-Spray-Synthesized La₂O₃-Loaded WO₃ Nanoparticle Films for NO₂ Sensing

Contact Info

Product

Resources

About

Methods of selectivity improvements of semiconductor gas sensors

Cited by 5 publications

References 15 publications

Detection of Gaseous Compounds with Different Techniques

Detection of Gaseous Compounds with Different Techniques

Gas Sensors- A Review

Flame-Spray-Synthesized La2O3-Loaded WO3 Nanoparticle Films for NO2 Sensing

Contact Info

Product

Resources

About

Flame-Spray-Synthesized La₂O₃-Loaded WO₃ Nanoparticle Films for NO₂ Sensing