Light enhanced gas sensing properties of indium oxide and tin dioxide sensors

Comini, Elisabetta; Cristalli, Alessandra; Faglia, Guido; Sberveglieri, Giorgio

doi:10.1016/s0925-4005(99)00350-0

Cited by 226 publications

(136 citation statements)

References 6 publications

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“…TiO2, WO3) [15,25,26]. Application of UV light means that the sensor operates in a lower temperature and that the response time can be also reduced.…”

Section: Semiconductor Gas Sensorsmentioning

confidence: 99%

Detection of Gaseous Compounds with Different Techniques

Mikołajczyk

Bielecki

Stacewicz

et al. 2016

Metrology and Measurement Systems

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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.

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“…TiO2, WO3) [15,25,26]. Application of UV light means that the sensor operates in a lower temperature and that the response time can be also reduced.…”

Section: Semiconductor Gas Sensorsmentioning

confidence: 99%

Detection of Gaseous Compounds with Different Techniques

Mikołajczyk

Bielecki

Stacewicz

et al. 2016

Metrology and Measurement Systems

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“…Recent studies with metal oxide sensors suggests that UV light may be beneficial in promoting oxidation of reducing gases on their surfaces, resembling the anodic reaction in SOFC. 36,37,38 . We expect that UV light could promote the anodic reaction process by providing photogenerated holes to break the chemical bonds with surface oxide ions or intermediate complexes between oxide ions and fuel adsorbates (e.g., OH − ).…”

Section: B Model Electrode Materialsmentioning

confidence: 99%

Photo-Activated Low Temperature, Micro Fuel Cell Power Source

Tuller¹

2007

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-A Key objective of this program is to identify electrodes that will make it possible to significantly reduce the operating temperature of micro-SOFC and thin film-based SOFCs. Towards this end, efforts are directed towards a) identifying the key rate limiting steps which limit presently utilized electrodes from performing at reduced temperatures, as well as, b) investigating the use of optical, as opposed to thermal energy, as a means for photocatalyzing electrode reactions and enabling reduced operating temperatures. During Phase I, the following objectives were achieved: a) assembly and testing of our unique Microprobe Thin Film Characterization System; b) fabrication of the model cathode materials system in thin film form by both PLD and ink jet printing; and c) the successful configuration and testing of the model materials as cathodes in electrochemical cells. A further key objective d) to test the potential of illumination in enhancing electrode performance was also achieved.

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“…They have attracted much attention in the field of gas sensing under the atmospheric conditions because of the simplicity of their use, their capability to detect large number of gases and potentially wide range of applications. The detection of the gas can be performed by measuring the change of capacitance, work function, mass, optical characteristics energy released by the gas-solid interaction 1 .…”

Section: Introductionmentioning

confidence: 99%

A Study of Detection Mechanism of Metal Oxide Gas Sensor Under UV Radiation

MALL¹,

Shukla²,

TRIPATHI³

et al. 2018

jusps-B

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The presented paper deals with the effect of UV radiation and change in rate of recombination on the operation of metal oxide gas sensors. The performance of a simple metal oxide sensor is simulated first and the relation between absorbed gas concentration and resistance is monitored in absence of UV radiation. Later, the same performance is monitored in the presence of UV radiation on the sensor with the occurrence of surface recombination phenomenon. The performances are simulated on MATLAB. The Grain boundary resistance (R gb ), neck resistance (R n ) and total resistance (R) were obtained by simulating standard equation on MATLAB software. The effect of the surface recombination on absorption of gas concentration and change in resistance is also taken into account. It has been observed that the resistance of the sensors depends on the grain size (L), flux density, absorbed gas concentration (N r ), depletion width (W).

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Light enhanced gas sensing properties of indium oxide and tin dioxide sensors

Cited by 226 publications

References 6 publications

Detection of Gaseous Compounds with Different Techniques

Detection of Gaseous Compounds with Different Techniques

Photo-Activated Low Temperature, Micro Fuel Cell Power Source

A Study of Detection Mechanism of Metal Oxide Gas Sensor Under UV Radiation

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