Photoluminescence response of gas sensor based on CHx/porous silicon—Effect of annealing treatment

Mahmoudi, B.; Gabouze, N.; Guerbous, L.; Haddadi, M.; Cheraga, H.; Beldjilali, K.

doi:10.1016/j.mseb.2007.01.033

Cited by 21 publications

(9 citation statements)

References 30 publications

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“…Pyroelectric CO 2 detectors are suitable for only room-temperature operation. Mahmoudi et al (2007) have demonstrated that porous silicon coated with hydrocarbon groups (CH x ) annealed at different temperatures can emit a blue light in response to CO 2 gas. Stabilization of the photoluminescent properties of the porous silicon in an actual sensor device has not yet been established and is undergoing further research.…”

Section: Fiber Optic Co 2 Sensorsmentioning

confidence: 99%

Carbon Dioxide (CO2) Sensors for the Agri-food Industry—A Review

Neethirajan

Jayas

Sadistap

2008

Food Bioprocess Technol

282

134

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In the food and agricultural industry, sensors are being used for process control, monitoring quality, and assessing safety. There is a growing demand for carbon dioxide (CO 2 ) sensors in the bulk food storage sector, because CO 2 sensors can be used to detect incipient spoilage and to assess CO 2 levels in modified-atmosphere packages and storage structures. The market potential for reliable and inexpensive CO 2 sensors is huge because of a wide range of applications in the agri-food industry. This review synthesizes information about the types of CO 2 sensors, analyzes their detection processes, provides a broad overview of the innovative research on the development of sensors, sensing mechanisms, and their characteristics, and outlines future possibilities for use of CO 2 sensors.

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Section: Fiber Optic Co 2 Sensorsmentioning

confidence: 99%

Carbon Dioxide (CO2) Sensors for the Agri-food Industry—A Review

Neethirajan

Jayas

Sadistap

2008

Food Bioprocess Technol

282

134

View full text Add to dashboard Cite

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“…The controlled preannealing of the PSi surface before metallization was reported by Maji et al (2010) to facilitate the growth and coalescence of the shallow nanocrystallites that help in removing the nanopores on macroporous silicon surfaces and yield much better ohmic contact. Mahmoudi et al (2007) reported the sensitive, direct detection of CO 2 and propane by means of photoluminescencequenching of CH X modified porous Si. CHx films were coated over the PSi samples by RF plasma decomposition of a methane-argon mixture followed by a thermal treatment.…”

Section: Aging Effect Of M-psi Contactsmentioning

confidence: 99%

“…Ma et al 2014 pCHx/PSi/Si Gas sensor (Junction shows a good rectifying behavior and reversible interaction with gases; CHx/PSi layers are responsible for strong band bending at the silicon surface.) Belhousse et al 2004Belhousse et al , 2005Gabouze et al 2006;Mahmoudi et al 2007 Downloaded by [United Arab Emirates University ] at 03:54 27 June 2016…”

Section: Heavily Doped P-n Junction Porous Siliconmentioning

confidence: 99%

The Mechanism of Metal-Assisted Etching of Silicon

2016

Porous Silicon: From Formation to Application: Formation and Properties, Volume One

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“…More recently, to improve the performance of such materials for potential application in integrated circuit devices, the screen-printing technique has been used to fabricate thick films. This technique results in the production of crack-free thick films with a highly porous structure compared with those produced with other deposition techniques [25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Optical and gas-sensing properties, and electronic structure of the mixed-phase CaCu 3 Ti 4 O 12 /CaTiO 3 composites

Oliveira

Ramírez

Ponce

et al. 2017

Materials Research Bulletin

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Optical and gas-sensing properties, and electronic structure of the mixed-phase CaCu3Ti4O12/CaTiO3 composites, Materials Research Bulletinhttp://dx. Graphical abstract A) B)Highlights  CCTO/CTO composites were synthesized by a solid-state reaction using various milling durations; These composites have a broad PL emission band located at 450 nm; CCTO/CTO material was deposited onto an alumina substrate using a screen-printing technique, and hence, could be structured for gas-sensing applications;  Our theoretical findings may further elucidate the electronic structure associated with the interfacial band alignment (type I-straddling gap); Combined experimental and theoretical investigations were conducted on the electronic structure, as well as the optical and gas-sensing properties of mixedphase CaCu3Ti4O12/CaTiO3 (CCTO/CTO) composites, which were synthesized by a solid-state reaction using various milling durations. Our results revealed that these CCTO/CTO composites have a broad photoluminescence (PL) emission band located at 450 nm, which is strongly influenced by the milling process duration. Scanning electron microscopy images confirmed that the use of longer milling durations favored the formation of pores and increased the active surface area of the CCTO/CTO thick films. The thick films were prepared using the screenprinting technique, and hence, could be structured for gas-sensing applications. Our theoretical findings may further elucidate the electronic structure associated with the interfacial band alignment (type I-straddling gap) of the CCTO/CTO composite systems.

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Photoluminescence response of gas sensor based on CHx/porous silicon—Effect of annealing treatment

Cited by 21 publications

References 30 publications

Carbon Dioxide (CO2) Sensors for the Agri-food Industry—A Review

Carbon Dioxide (CO2) Sensors for the Agri-food Industry—A Review

The Mechanism of Metal-Assisted Etching of Silicon

Optical and gas-sensing properties, and electronic structure of the mixed-phase CaCu 3 Ti 4 O 12 /CaTiO 3 composites

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