A very sensitive porous silicon based humidity sensor

Francia, G. Di; Castaldo, Anna; Massera, Ettore; Nasti, I.; Quercia, L.; Rea, Ilaria

doi:10.1016/j.snb.2005.06.048

Cited by 58 publications

(15 citation statements)

References 12 publications

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“…The principle for this type of biosensors is based in the photoluminescence quenching (PQ) that takes place when the specimen is in contact with a target substance. Applications cover from organic solvents, biological waste, and molecular recognition (Di francia et al, 2005). This type of sensors is delicate and sensible to interfacial charging that can affect their performance.…”

Section: Photoluminescence Transductionmentioning

confidence: 99%

Porous Silicon Sensors - from Single Layers to Multilayer Structures

Lugo¹,

Ocampo²,

Doti³

et al. 2011

Biosensors - Emerging Materials and Applications

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Section: Photoluminescence Transductionmentioning

confidence: 99%

Porous Silicon Sensors - from Single Layers to Multilayer Structures

Lugo¹,

Ocampo²,

Doti³

et al. 2011

Biosensors - Emerging Materials and Applications

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“…Although very high sensitivities have often been reported, selectivity is rarely an issue [80,81]. Actually, the instability of the native surface termination is the major barrier preventing wide applications of PS in the sensor field.…”

Section: Crystalline Siliconmentioning

confidence: 99%

Conductometric Gas Nanosensors

2009

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This paper presents a review of the current research activities in the field of gas nanosensors. Nanomaterials are characterized by physical and chemical properties that differ from their macroscopic counterparts and, in particular, by an enhanced chemical reactivity even at room temperature. This effect has stimulated the development of chemical sensors based on several different nanomaterials. Here we focus most attention on carbon nanotubes, silicon and metal oxide nanoparticles and metal nanowires. After introducing a few general definitions a discussion on the fundamental properties of the nanostate used in the sensor field is presented and several nanosensors, based on the aforementioned nanomaterials, are discussed. Finally, some personal conclusions will be drawn.

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“…It is also designed as a humidity sensor through changes in its electrical properties [5]. Photoluminescence (PL) quenching of PS was reported as a gas sensor [6].…”

Section: Introductionmentioning

confidence: 99%

Porous Silicon Based Humidity Sensor

Kayahan

2015

Acta Phys. Pol. A

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Porous silicon (PS) is well known as a photovoltaic material. However, in the last couple of years, research has focused on the use of porous silicon as chemical-biological sensors. This paper discusses the use of PS as an optical humidity sensor. Photo-luminescence (PL) quenching measurements in a controlled humidity atmosphere (mixed Nitrogen gas and water vapor) were performed to test the sensor response towards the water vapor. Surface morphologies of the PS samples were characterized by a scanning electron microscopy (SEM) and structural properties were investigated via Fourier Transform Infrared (FTIR) spectroscopy. It was found that PS surface is very sensitive to the water vapor. The experimental results suggested that PS surface is a promising candidate material to be used as a humidity sensor.

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A very sensitive porous silicon based humidity sensor

Cited by 58 publications

References 12 publications

Porous Silicon Sensors - from Single Layers to Multilayer Structures

Porous Silicon Sensors - from Single Layers to Multilayer Structures

Conductometric Gas Nanosensors

Porous Silicon Based Humidity Sensor

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