Reliable hybrid GasFETs for work-function measurements with arbitrary materials

Flietner, B.; Doll, Theodor; Lechner, J.; Leu, Ming‐Taun; Eisele, I.

doi:10.1016/0925-4005(94)87008-x

Cited by 50 publications

(15 citation statements)

References 8 publications

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“…1(c) are different variants of suspended gate field-effect gas sensors. These devices were first introduced by Janata et al [10] and later intensively investigated by other groups [11], [12].…”

Section: Si Sensor Architecturementioning

confidence: 98%

“…In the experiment below two screen-printed Pt surfaces, one untreated and one covered with ZnO nano-hairlines (Fig. 8) [11] were compared with regard to their SI efficiency and further compared with the emission from a ZnO thin film with a smooth surface morphology. All three surfaces were exposed to gas pulses of ethyne (1% in synthetic air) and (2% in synthetic air) and their SI responses compared.…”

Section: Influence Of Nano Morphologiesmentioning

confidence: 99%

See 1 more Smart Citation

Surface Ionization Gas Detection on Platinum and Metal Oxide Surfaces

Hackner¹,

Habauzit²,

Müller³

et al. 2009

IEEE Sensors J.

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Surface ionization (SI) gas detection experiments have been performed on platinum (Pt) and metal oxide (MOX) films. The probability of surface ion emission varies with temperature in an Arrhenius-type manner. Among all hydrocarbons studied so far those with amine functional groups exhibited the lowest activation energies allowing detection in the ppm concentration range at emitter operation temperatures of about 400 C. All other kinds of hydrocarbons could not be detected under these same conditions, not even if their concentrations were as high as 1% or 2%. Under high-temperature conditions ( 800 C), this kind of selectivity breaks down and solid-state SI emitters start to behave in a similar way as flame ionization detectors, allowing detection of a much wider range of hydrocarbon species. Emitter materials with surface morphologies in the nanometer range were found to form much more efficient ion emitters than emitters with smooth surfaces.Index Terms-Charge transfer process, functional hydrocarbons, gas sensing mechanism, proton affinity, surface ionization (SI).

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Section: Si Sensor Architecturementioning

confidence: 98%

Section: Influence Of Nano Morphologiesmentioning

confidence: 99%

Surface Ionization Gas Detection on Platinum and Metal Oxide Surfaces

Hackner¹,

Habauzit²,

Müller³

et al. 2009

IEEE Sensors J.

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“…The pioneers in the construction of such type of set-up were I. Eisele and Th. Doll [6], who used a hybrid approach with one part being a gateless FET and the other a substrate equipped with a sensing film, both brought together to form a gas sensor. To make such things industrially usable, Siemens, together with Micronas developed a polymer flip-chip variant of this device that allows precise mounting as well as the usage of lowprocessing temperatures.…”

Section: Gas Sensors Based On the Readout Of Electrical Potentialmentioning

confidence: 99%

Industrialisation of Gas Sensors for Comfort, Security and Wellness

Fleischer

2007

TRANSDUCERS 2007 - 2007 International Solid-State Sensors, Actuators and Microsystems Conference

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Variations in the design of gas sensing Microsystems yield a wide variety of device characteristics that can be exploited to fulfill heterogeneous application requirements. For successful industrialization, of a gas sensing application, care has to be taken in advance, that the chosen sensing technology has the potential to fulfill all needs of the intended application. Gas sensors based on the conductance modulation of semi-conducting metal oxides are characterized by very simple and robust constructions. Limits are in selectivity. The successful applications for regulation of home gas burners and for Ethanol detection in human breath for car interlocks are discussed. The usage of the potential readout of gas sensing materials with FET-devices allows access to a wide variety of sensing materials that distinctly opens up the variety of gases that can be detected using metal oxide gas sensors. The premises of the usage of these gas sensors for successful fire detection and monitoring of the room air quality are discussed. 4

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“…[43][44][45][46][47][48] For the devices chemical-sensitive organic layers can been used either as gate [49][50][51] or as bulk material. 52,53 With both types good results have been achieved for the detection of reducing and oxidizing gases.…”

Section: A Polymer Oxide Silicon Field-effect Transistormentioning

confidence: 99%