Grain size effects on H2 gas sensitivity of thick film resistor using SnO2 nanoparticles

Ansari, S. G.; Boroojerdian, P.; Sainkar, S. R.; Karekar, R.N.; Aiyer, R. C.; Kulkarni, Sudhir A.

doi:10.1016/s0040-6090(96)09152-3

Cited by 286 publications

(132 citation statements)

References 7 publications

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“…It is in fact well recognized that by reducing the particle size of the sensing material in the nanometer range the sensitivity of chemoresistive gas sensors is greatly improved both for the large specific surface offered and for the influence in reducing the surface charge density [21,[28][29][30][31][32][33][34][35]. Furthermore, in this size range, a large fraction of the atoms (up to 50%) are present at the surface or the interface region; therefore, the chemical and electronic of nanoparticles are different from those of the bulk, consequently contributing to an increase in the sensing properties.…”

Section: Sensing Materialsmentioning

confidence: 99%

First Fifty Years of Chemoresistive Gas Sensors

2015

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Abstract:The first fifty years of chemoresistive sensors for gas detection are here reviewed, focusing on the main scientific and technological innovations that have occurred in the field over the course of these years. A look at advances made in fundamental and applied research and leading to the development of actual high performance chemoresistive devices is presented. The approaches devoted to the synthesis of novel semiconducting materials with unprecedented nanostructure and gas-sensing properties have been also presented. Perspectives on new technologies and future applications of chemoresistive gas sensors have also been highlighted.

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Section: Sensing Materialsmentioning

confidence: 99%

First Fifty Years of Chemoresistive Gas Sensors

2015

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“…Tin oxide (SnO 2 ), a ntype semiconductor with a wide band gap (3.6 eV, at 300 K), is well known for its potential applications in gas sensors, dye sensitized solar cells, and transparent conducting electrodes and as a catalyst support [3,4]. Therefore, many processes have been proposed to synthesize SnO 2 nanostructures; some involve dry processes such as sputtering from tin oxide target [5] or from metallic target followed by oxidation [6] and chemical vapour deposition (CVD) [7], while others are based on wet processes, including spray pyrolysis [8] and sol-gel-related methods which have been used to prepare tin oxide coating, particles, and precipitates [9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Effect of Sintering Temperatures on the Synthesis of SnO2 Nanospheres

Pawar

Pinjari

Kolekar

et al. 2012

ISRN Chemical Engineering

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In this communication we report the rapid nanostructure of SnO 2 with a spherical morphology which has been prepared in large scale via sol-gel method. The products were characterized with scanning electron microscopy, X-ray powder diffraction, transmission electron microscopy, FTIR, and photoluminescence spectroscopy. The strong photoluminescence of the nanosphere in visible region suggested possible application in nanoscaled optoelectronic devices. A possible growth mechanism for the SnO 2 nanosphere in terms of solvation, hydrolysis, and polymerization was proposed.

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“…Tin oxide is a wide band gap n-type semiconductor and is one of the commonly used material for gas sensors, transparent conducting electrodes and optoelectronic devices operating at room temperature [1]. In recent years thin lms of SnO 2 have become an integral part of modern electronic technology.…”

Section: Introductionmentioning

confidence: 99%

Effect of Mn Doping on the Structural, Optical and Magnetic Properties of SnO₂Nanoparticles

Marimuthu

Agilan²,

Muthukumarasamy³

et al. 2015

Acta Phys. Pol. A

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Undoped and Mn doped SnO2 prepared by co-precipitation method exhibits nanocrystalline nature with prominent peaks along (110), (101), (211), and (310) planes. All the prepared samples are nanocrystalline with crystallite size lying in the range of 4.85.6 nm. The prepared SnO2 nanoparticles exhibit single tetragonal crystalline phase. The high resolution transmission electron microscopy images show that the particles are nanocrystalline in nature. The composition of the prepared samples have been analyzed using energy dispersive analysis of X-rays spectra. The photoluminescence spectroscopy shows the recombination of electrons in singly occupied oxygen vacancies with photoexcited holes in the valence band. Broad UV emission at 426 nm is observed in photoluminescence. UVvis absorption spectral studies showed a peak at 385 nm. Magnetic measurements revealed that all the doped samples exhibit room temperature ferromagnetism, which is identied as an intrinsic characteristic obtained on doping. Pure SnO2 nanoparticles showed diamagnetism, SnO2 with lower Mn content show larger magnetization and with increasing Mn content the retentivity and coercivity are found to decrease.

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Grain size effects on H2 gas sensitivity of thick film resistor using SnO2 nanoparticles

Cited by 286 publications

References 7 publications

First Fifty Years of Chemoresistive Gas Sensors

First Fifty Years of Chemoresistive Gas Sensors

Effect of Sintering Temperatures on the Synthesis of SnO2 Nanospheres

Effect of Mn Doping on the Structural, Optical and Magnetic Properties of SnO₂Nanoparticles

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Grain size effects on H2 gas sensitivity of thick film resistor using SnO2 nanoparticles

Cited by 286 publications

References 7 publications

First Fifty Years of Chemoresistive Gas Sensors

First Fifty Years of Chemoresistive Gas Sensors

Effect of Sintering Temperatures on the Synthesis of SnO2 Nanospheres

Effect of Mn Doping on the Structural, Optical and Magnetic Properties of SnO2Nanoparticles

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Effect of Mn Doping on the Structural, Optical and Magnetic Properties of SnO₂Nanoparticles