Silicon Porosification: Approaches to PSi Parameters Control

Korotcenkov, Ghenadii

doi:10.1201/b19342-7

Porous Silicon: From Formation to Application: Formation and Properties, Volume One 2015

DOI: 10.1201/b19342-7

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Silicon Porosification: Approaches to PSi Parameters Control

Ghenadii Korotcenkov

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2020

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References 139 publications

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“…The obtained results are in good agreement with those of other investigations. 23,24 It is important to note that the lower current density (<30 mA cm −2 ) favors for the formation of well defined diameter, orientation and highly separated ordered of nanopores; hence, it may lead to mass transportation within nano pores. As the current density reaches a certain value, a part of nanopores coagulate to larger structures.…”

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Electrochemically Oxidized Porous Silicon Uses as an Electrochemical Sensor for Ethanol Detection

Ramesh¹

2020

ECS J. Solid State Sci. Technol.

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Nano-porous silicon (PSi) layers have been prepared by electrochemical etching of (100) Si wafer in the mixture of ethanol (C2H5OH) and hydrofluoric acid (HF). The evolution of morphology of PSi as a function of current density was estimated using the image j and WSxM software’s based on the related SEM images. The electrochemical properties of PSi were investigated using the electrochemical impedance spectroscopy (EIS). The results verified that the estimated charge transfer resistance (Rct) of fabricated PSi was found to increase with the current density from 2.2 kΩ at 10 mA cm−2 to 5.2 kΩ at 30 mA cm−2, due to increase the depth of the silicon nanopores. Additionally, the paper deals with an electrochemical sensing device based on oxide layer covered on PSi nanostructure used to detect ethanol molecules that uses an EIS. The oxide/PSi nanostructure sensor exhibited high response towards ethanol detection, it was estimated about 79.2% at 20 min. It was also verified with the highest sensitivity, 77 μA μM−1 and lower detection limit of 2.4 μM obtained from the chronoamperometric technique. Further, the interference of ethanol on the PSi was studied by regression analysis using the calibration interval.

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Electrochemically Oxidized Porous Silicon Uses as an Electrochemical Sensor for Ethanol Detection

Ramesh¹

2020

ECS J. Solid State Sci. Technol.

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Silicon Porosification: Approaches to PSi Parameters Control

Cited by 1 publication

References 139 publications

Electrochemically Oxidized Porous Silicon Uses as an Electrochemical Sensor for Ethanol Detection

Electrochemically Oxidized Porous Silicon Uses as an Electrochemical Sensor for Ethanol Detection

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