indium oxide ozone sensor

Conductivity and work function ozone sensors based on ...

Jun 25, 1998· Indium oxide thin films were deposited on silicon substrates for work function sensing as well as on alumina (Pt) conductivity sensors. A correlation of work function and conductivity measurements due to ozone in dry and humid air reveal that a chemisorption state dominates both sensor effects at temperatures below 200°C.

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(PDF) Low temperature indium oxide gas sensors | Mirela ...

Sensors and Actuators B 118 (2006) 135–141 Low temperature indium oxide gas sensors M. Suchea a,b,d,∗ , N. Katsarakis a,c , S. Christoulakis a,b , S. Nikolopoulou a , G. Kiriakidis a,b a Institute of Electronic Structure and Laser, Foundation for Research & Technology-Hellas, PO Box 1527, Vasilika Vouton, 71110 Heraklion, Crete, Greece b University of Crete, Chemistry Department, Greece c ...

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Photocatalytic ozone sensor based on mesoporous indium ...

Nov 30, 2011· 1. Introduction. In the last few years it has been shown that indium oxide (In 2 O 3) is a suitable material for application as a resistive gas sensor in the field of detecting oxidizing gases like O 3 and NO 2, .Besides its high sensitivity to these gases down to concentrations in the ppb range it is practically insensitive to reducing gases in the lower temperature range (100–150 °C) .

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ENVIRONMENTS DEMO NSTRATION USING …

The indium tin oxide (ITO) thin film sensor for the measurement of ozone, developed by the University of North Florida, represents a unique, easily produced in mass, and newly designed solid-state nanocrystalline gas sensor array (patent pending). These sensors allow detection to the parts per billion by volume (ppbv) level.

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3-Doped Indium Oxide Thick Films for Ozone Detection at ...

sensor’s responses as high as 40 under 200 ppb of ozone. Keywords: ozone detection; W-doped indium oxide; thick film 1. Introduction Ozone is known to be the most reactive form of oxygen, being less stable with respect to O 2. It is produced in the troposphere in a chain of chemical reactions involving nitrogen and hydrocarbon gases as well.

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Stratospheric Ozone Detection Using a Photon Stimulated ...

Stratospheric ozone is normally measured using stationary equipments, such as a Dobson spectrometer and filter ozonometer, which have the disadvantages of large size, high price and high cost for operation and maintenance. In this work, a balloon-borne photostimulated ozone sensor based on indium oxide nanoparticles has been developed to measure stratospheric ozone.

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Metal organic chemical vapor deposition of indium oxide ...

In this work, a novel type of ozone sensor based on the photoreduction and oxidation principles operating at room temperature was developed. First, MOCVD techniques were used to grow high-quality Indium oxide thin films and nanostructures, to be used as ozone sensing materials. On sapphire substrates, highly textured bcc-In2(O)3 films were ...

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[PDF] Stratospheric Ozone Detection Using a Photon ...

Stratospheric ozone is normally measured using stationary equipments, such as a Dobson spectrometer and filter ozonometer, which have the disadvantages of large size, high price and high cost for operation and maintenance. In this work, a balloon-borne photostimulated ozone sensor based on indium oxide nanoparticles has been developed to measure stratospheric ozone.

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Polycrystalline Well-Shaped Blocks of Indium Oxide ...

Aging-induced aggregation of the nanoparticles in the colloidal solution of indium hydroxide leads to the formation of micrometer particles in the form of well-shaped blocks. As shown by high-resolution transmission electron microscopy and selected area electron diffraction, the well-shaped blocks have a polycrystalline nature composed of small nanounits. After calcination at 400 °C, they ...

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Photon stimulated sensor based on indium oxide ...

Mar 01, 2011· In this work, it is demonstrated that compact energy-saving photostimulated ozone sensors based on indium oxide nanoparticles can detect ozone with a dynamical range over four orders of magnitude at room temperature. The photostimulated ozone sensor shows a very low cross response to NO 2, CO, and CO 2. Furthermore, the sensing signal is very ...

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In2O3- and SnO2-Based Thin Film Ozone Sensors: Fundamentals

The paper considers SnO 2 and In 2 O 3 thin films as materials for the design of solid-state conductometric ozone sensors in depth. In particular, the present review covers the analysis of the fundamentals of SnO 2 - and In 2 O 3 -based conductometric ozone sensor operation. The main focus is on the description of mechanisms of ozone interaction with metal oxides, the influence of air humidity ...

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Indium oxide—a transparent, wide-band gap semiconductor ...

Jan 19, 2015· The transparent semiconducting oxide (TSO) indium oxide (In 2 O 3) has been investigated for many brief initial research into its semiconducting properties, however, most effort has been directed towards its widespread application as the transparent conducting oxide (TCO) indium-tin-oxide and to some extent as active gas-sensor material.

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Flux Measurements of Biogenic Precursors to Ozone and ...

Flux Measurements of Biogenic Precursors to Ozone and Particulate Matter in the Central Valley FINAL REPORT Contract No. 06-329 Prepared for the California Air Resources Board and the California Environmental Protection Agency Principal Investigator Professor Allen H. Goldstein Department of Environmental Science, Policy and Management

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Metal organic chemical vapor deposition of indium oxide ...

Oct 06, 2011· MOCVD; indium oxide; ozone sensor; photoreduction; oxidation: Abstract In this work, a novel type of ozone sensor based on the photoreduction and oxidation principles operating at room temperature was developed. First, MOCVD techniques were used to grow high-quality Indium oxide thin films and nanostructures, to be used as ozone sensing materials.

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(AlGaIn)N UV LEDs for integrated metal-oxide based ozone ...

Abstract. There is a high demand for compact low-cost ozone (O 3) has been shown that indium oxide (In II O 3) thin films grown by metal-organic vapor-phase epitaxy (MOVPE) act as an O3 sensitive material, which can be activated at roomtemperature by ultraviolet (UV) the present work we integrated the In II O 3 sensing thin film and an (AlGaIn)N based near-UV LED back-to ...

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Ageing Resistant Indium Oxide Ozone Sensing Films: Ingenta ...

Indium oxide (In 2 O 3 thin films prepared by DC magnetron sputtering intended to be used as active layers for ozone sensing, demonstrating very high sensing response, were re-examined seven years after their fabrication date in terms of transmittance, surface structure, transport and sensing properties. Results revealed a noticeable characteristic of these films to retain, to a remarkable ...

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Layered Surface Acoustic Wave Based Indium Oxide Gas ...

Jan 13, 2010· This book presents novel Layered SAW based gas sensors with indium oxide gas sensitive layers, which were utilised for ozone and hydrogen sensing applications. The reader can also find a description of the fabrication of SAW devices, sensor layers’ material characterisation and the gas sensing mechanism of semiconductor metal oxide based gas ...

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