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
Creation of a unique self-supported pattern of radially aligned semiconductor Ag2S nanorods.
Qingyi Lu,Feng Gao,Dongyuan Zhao +2 more
Journal ArticleDOI
Size-dependent oxygen-related electronic states in silicon nanocrystals
TL;DR: In this paper, a photoluminescence (PL) blueshift was observed in SiO2-embedded silicon nanocrystals with an initial diameters of 2.9-3.4 nm.
Journal ArticleDOI
Porous silicon in crystalline silicon solar cells: a review and the effect on the internal quantum efficiency
Lieven Stalmans,Jef Poortmans,Hugo Bender,Matty Caymax,Khalid Said,Eva Vazsonyi,Johan Nijs,Robert Mertens +7 more
TL;DR: In this article, an analysis of internal quantum efficiency data obtained on both conventional and thin-film c-Si solar cells has been performed with the aim of describing the light diffusing behaviour of porous Si as well as investigating the surface passivating capabilities.
Journal ArticleDOI
Effect of thermal annealing and surface coverage on porous silicon photoluminescence
TL;DR: In this article, the effect of thermal annealing and surface coverage on porous silicon photoluminescence was studied in situ in an ultrahigh vacuum chamber, where the authors correlated simultaneously temperature, surface coverage, and photoluminance intensity.
Journal ArticleDOI
Fabrication of silicon cones and pillars using rough metal films as plasma etching masks
Katrin Seeger,Richard E. Palmer +1 more
TL;DR: In this paper, a simple fabrication process was developed which allows the production of nanoscale silicon structures, with diameters as small as 5 nm, by using rough silver films as an etching mask for reactive ion etching.
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