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Silicon quantum wire array fabrication by electrochemical and chemical dissolution of wafers
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In this paper, free standing Si quantum wires can be fabricated without the use of epitaxial deposition or lithography using electrochemical and chemical dissolution steps to define networks of isolated wires out of bulk wafers.Abstract:
Indirect evidence is presented that free‐standing Si quantum wires can be fabricated without the use of epitaxial deposition or lithography. The novel approach uses electrochemical and chemical dissolution steps to define networks of isolated wires out of bulk wafers. Mesoporous Si layers of high porosity exhibit visible (red) photoluminescence at room temperature, observable with the naked eye under <1 mW unfocused (<0.1 W cm−2) green or blue laser line excitation. This is attributed to dramatic two‐dimensional quantum size effects which can produce emission far above the band gap of bulk crystalline Si.read more
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Patent
Silicon anode for a rechargeable battery
TL;DR: An electrode and electrode assembly for use as an anode in a lithium-ion rechargeable cell that uses silicon or silicon-based elements of specific aspect ratio dimensions and geometry is provided, as well as methods for manufacturing the same as discussed by the authors.
Journal ArticleDOI
Suggested Correlation between the Visible Photoluminescence and the Fourier Transform Infrared Spectrum of a Porous Silicon Surface
James L. Gole,David A. Dixon +1 more
TL;DR: In this paper, the FTIR spectrum for a heavily oxidized porous silicon (PS) surface is considered and it is suggested that a portion of this spectrum be reassigned to the SiO stretch frequency of a surface bound-silanone-based silicon oxyhydride fluorophor consistent also with the 18O2/16O2 isotopic labeling of FTIR and with matrix isolation infrared spectra for silanone, silanoic acid, and silicic acid.
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Piezoresistance in Silicon and its nanostructures
TL;DR: In this paper, the authors present the controversy surrounding claims and counter-claims of giant piezoresistance in Silicon nanostructures by presenting a summary of the major works carried out over the last 10 years.
Journal ArticleDOI
Electrochemical Characterization of the Open-Circuit Deposition of Platinum on Silicon from Fluoride Solutions
TL;DR: An electrochemical study of the open-circuit deposition of platinum on silicon from fluoride solutions is presented in this paper, where the main features of the process can be explained using the mixed potential theory, in which the electrode potential is defined by two simultaneous reactions at the electrode surface.
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Formation of silicon nanocrystals in sapphire by ion implantation and the origin of visible photoluminescence
Selcuk Yerci,Uğur Serincan,Ilker Dogan,S. Tokay,Mustafa Fatih Genisel,Atilla Aydinli,Rasit Turan +6 more
TL;DR: In this article, Raman spectroscopy and X-ray diffraction XRD were used to detect the evolution of silicon nanocrystals in sapphire matrix by ion implantation and subsequent annealing.
References
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Journal ArticleDOI
Electrolytic shaping of germanium and silicon
TL;DR: In this article, the properties of electrolyte-semiconductor barriers are described, with emphasis on germanium, and the use of these barriers in localizing electrolytic etching is discussed.
Journal ArticleDOI
Unusually low surface-recombination velocity on silicon and germanium surfaces.
TL;DR: It is found that a standard, widespread, chemical-preparation method for silicon, oxidation followed by an HF etch, results in a surface which from an electronic point of view is remarkably inactive, which has implications for the ultimate efficiency of silicon solar cells.
Journal ArticleDOI
Infrared spectroscopy of Si(111) and Si(100) surfaces after HF treatment: Hydrogen termination and surface morphology
TL;DR: In this paper, multiple internal infrared reflection spectroscopy has been used to identify the chemical nature of chemically oxidized and subsequently HF stripped silicon surfaces, and these very inert surfaces are found to be almost completely covered by atomic hydrogen.
Journal ArticleDOI
Hydrogen desorption kinetics from monohydride and dihydride species on silicon surfaces.
TL;DR: In this article, the authors measured hydrogen desorption from monohydride and dihydride species on crystalline-silicon surfaces using transmission Fourier-transform infrared (FTIR) spectroscopy.
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