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
Patent
Nanostructures and methods for manufacturing the same
Lars Samuelson,Björn Ohlsson +1 more
TL;DR: In this article, a resonant tunneling diode and other one dimensional electronic, photonic structures, and electromechanical MEMS devices are formed as a heterostructure in a nanowhisker by forming length segments of the whisker with different materials having different band gaps.
Journal ArticleDOI
Multicolor Silicon Light-Emitting Diodes (SiLEDs)
Florian Maier-Flaig,Julia Rinck,Moritz Stephan,Tobias Bocksrocker,Michael Bruns,Christian Kübel,Annie K. Powell,Geoffrey A. Ozin,Geoffrey A. Ozin,Uli Lemmer +9 more
TL;DR: It is demonstrated that size-separation of ncSi leads to drastically improved lifetimes of the devices and much less sensitivity of the emission wavelength to the applied drive voltage.
Journal ArticleDOI
Will silicon be the photonic material of the third millenium
TL;DR: This review will give a brief motivation for silicon microphotonics and try to give the state-of-the-art of this technology, where silicon is predicted to be the material to achieve a full integration of electronic and optical devices.
Journal ArticleDOI
Solution Synthesis of Ultrastable Luminescent Siloxane-Coated Silicon Nanoparticles
TL;DR: In this paper, a silanization method was used to terminate the silicon nanoparticles of ∼4.5(1.10) nm from a room-temperature solution route.
Journal ArticleDOI
Nanocrystalline-silicon superlattice produced by controlled recrystallization
Leonid Tsybeskov,Karl D. Hirschman,Siddhartha P. Duttagupta,Margit Zacharias,Philippe M. Fauchet,John P. McCaffrey,David J. Lockwood +6 more
TL;DR: In this paper, the size of the Si nanocrystals is limited by the thickness of the a-Si layer, the shape is nearly spherical, and the orientation is random.
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