Porous silicon biosensors on the advance

Jane, Andrew; Dronov, Roman; Hodges, Alastair M.; Voelcker, Nicolas H.

doi:10.1016/j.tibtech.2008.12.004

Cited by 402 publications

(294 citation statements)

References 58 publications

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“…These SEM micrographs confirm the fact that the higher currents are applied in the etching process the larger pore sizes are obtained. Reflectance spectra of c-Si-n/PSi-n/MWCNT/SiOx structures in Figure 5a present the typical Fabry-Perot oscillations due to the different PSi layer thicknesses, standing out the decreasing amplitude as consequence of the increased porosity [4][5][6]. According to Figure 5b, the presence of the MWCNTs affects mainly the spectrum associated with the lowest anodizing time (0.5 min), in the region from 400 to 750 nm, the oscillations are attenuated.…”

Section: Resultsmentioning

confidence: 91%

Optical and Morphological Analysis of c-Si/PSi and c-Si/PSi/MWCNT/SiOx Heterostructures

Huerta

López

Luz

et al. 2017

Proceedings of Eurosensors 2017, Paris, France, 3–6 September 2017

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Abstract:In the present work, the optical and morphological properties of Porous Silicon (PSi) in the c-Si-n/PSi and c-Si-n/SiP-n/MWCNT/SiOx structures are studied and analyzed. The PSi layer is grown on n-type c-Si (<0.005 Ω·cm <100>) by electrochemical anodization using different currents as: 10, 50 and 100 mA. The etching solution used was C2H6O:HF:C3H8O3 in a proportion of 6:3:1 by volume, respectively. The deposition of multi wall carbon nanotubes (MWNTs) on the PSi was done by spin coating, and later the surface was passivated by thermal oxidation. The porosity and thickness were obtained by gravimetry. UV-VIS spectroscopy and photoluminescence were used to obtain the optical properties and SEM was used to analyze the morphology.

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Section: Resultsmentioning

confidence: 91%

Optical and Morphological Analysis of c-Si/PSi and c-Si/PSi/MWCNT/SiOx Heterostructures

Huerta

López

Luz

et al. 2017

Proceedings of Eurosensors 2017, Paris, France, 3–6 September 2017

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show abstract

“…The advantage of porous silicon in bio-applications lies in its high surface to volume ratio, tunable structure, low cost, facile fabrication and compatibility with existing silicon treatment technology. As several other reviews and book chapters have discussed early research on porous silicon optical biosensors [11][12][13][14], only recent studies, particularly emerging sensing strategies based on porous silicon, are present here. In addition, luminescent porous silicon for bioimaging will be briefly covered.…”

Section: Porous Siliconmentioning

confidence: 99%

“…The exciting performance of porous silicon photonic crystals as label-free optical biosensors was described in previous reviews [11][12][13][14], but the applications of these optical sensors in detecting biomolecules of low concentration still face challenges. The sensitivity of these biosensors is usually insufficient in clinical diagnosis or environmental monitoring.…”

Section: Photonic Crystal Based Biosensingmentioning

confidence: 99%

Optical Biosensing and Bioimaging With Porous Silicon and Silicon Quantum Dots (Invited Review)

Guan¹

2017

PIER

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“…It is important to point out that this type of biosensors is restricted to single-use, as the corrosion leads to destruction of the PSi structure. More complete reviews on PSi-based biosensors (Jane et al, 2009) or on label-free optical biosensors (Fan et al, 2008) can be found in the literature.…”

Section: Biosensors Based On Porous Siliconmentioning

confidence: 99%