Journal ArticleDOI
Silicon quantum wire array fabrication by electrochemical and chemical dissolution of wafers
Reads0
Chats0
TLDR
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
Citations
More filters
Journal ArticleDOI
Metal Deposition onto a Porous Silicon Layer by Immersion Plating from Aqueous and Nonaqueous Solutions
TL;DR: In this paper, the local cell mechanism is used to nucleate and grow the local cells of a polysilicon (PS) layer after the immersion plating of Ag, Cu, and Ni.
Journal ArticleDOI
Synthetic Developments of Nontoxic Quantum Dots
Adita Das,Preston T. Snee +1 more
TL;DR: Three major classes of nontoxic quantum dots composed of carbon, silicon and Group I-III-VI elements are selected and the myriad of synthetic strategies and surface modification methods to synthesize quantum dots compose of these material systems are discussed.
Journal ArticleDOI
Light-emitting porous silicon: materials science, properties, and device applications
Philippe M. Fauchet,Leonid Tsybeskov,C. Peng,Siddhartha P. Duttagupta,J. von Behren,Y. Kostoulas,J. M. V. Vandyshev,Karl D. Hirschman,Karl D. Hirschman +8 more
TL;DR: In this paper, a light-emitting porous silicon (LEPSi) that can emit light from the blue part of the spectrum to the infrared beyond 15 /spl mu/m has been demonstrated.
Journal ArticleDOI
Porous and nanoporous semiconductors and emerging applications
TL;DR: Pores in single-crystalline semiconductors can be produced in a wide range of geometries and morphologies, including the "nanometer" regime.
Journal ArticleDOI
Initial carrier relaxation dynamics in ion-implanted Si nanocrystals: Femtosecond transient absorption study
TL;DR: In this article, photo-induced absorption features of ion-implanted Si nanocrystals (NCs) are attributed to carriers in NC quantized states (high energy band) and Si/SiO2 interface states (low energy band).
References
More filters
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.
Related Papers (5)
The structural and luminescence properties of porous silicon
Visible light emission due to quantum size effects in highly porous crystalline silicon
A. G. Cullis,Leigh T. Canham +1 more