Porous Silicon Produced by Metal-Assisted Etching
نویسندگان
چکیده
منابع مشابه
Metal-assisted chemical etching in HFÕH2O2 produces porous silicon
A simple and effective method is presented for producing light-emitting porous silicon ~PSi!. A thin (d,10 nm! layer of Au, Pt, or Au/Pd is deposited on the ~100! Si surface prior to immersion in a solution of HF and H2O2 . Depending on the type of metal deposited and Si doping type and doping level, PSi with different morphologies and light-emitting properties is produced. PSi production occur...
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Many potential applications of porous silicon nanowires (SiNWs) fabricated with metal-assisted chemical etching are highly dependent on the precise control of morphology for device optimization. However, the effects of key etching parameters, such as the amount of deposited metal catalyst, HF-oxidant molar ratio (χ), and solvent concentration, on the morphology and etching kinetics of the SiNWs...
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A simple method for the fabrication of porous silicon (Si) by metal-assisted etching was developed using gold nanoparticles as catalytic sites. The etching masks were prepared by spin-coating of colloidal gold nanoparticles onto Si. An appropriate functionalization of the gold nanoparticle surface prior to the deposition step enabled the formation of quasi-hexagonally ordered arrays by self-ass...
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Silicon nanowires fabricated by metal-assisted chemical etching can present low porosity and a rough surface depending on the doping level of the original silicon wafer. In this case, wiring of silicon nanowires may represent a challenging task. We investigated two different approaches to realize the electrical contacts in order to enable electrical measurement on a rough silicon nanowire devic...
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Porous silicon (PSi) is a versatile nanomaterial which has been utilized in several applications such as optical switching, drug delivery and sensors since its discovery in 1991. This material has been extensively investigated as an optical sensor due to its high surface area, high sensitivity and variety of optical transduction possibilities, e.g. changes in uorescence or reectance (interfer...
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ژورنال
عنوان ژورنال: Journal of The Surface Finishing Society of Japan
سال: 2016
ISSN: 0915-1869,1884-3409
DOI: 10.4139/sfj.67.533