Journal ArticleDOI
Immersion plating of nickel onto a porous silicon layer from fluoride solutions
TLDR
In this paper, the deposition of nickel (Ni) onto a porous silicon (PS) layer by immersion plating from acidic and alkaline fluoride solutions has been studied, and different deposition behaviors are discussed on the basis of mixed potential theory, etching rate of PS and the state of Ni complex formation.Abstract:
The deposition of nickel (Ni) onto a porous silicon (PS) layer by immersion plating from acidic and alkaline fluoride solutions has been studied. In an immersion plating bath of simple hydrofluoric acid (HF) of pH 2 containing Ni ions, no metal deposition was observed. However, visible metallic Ni was deposited from the ammonium fluoride (NH 4 F) alkaline solution of pH 8. The different deposition behaviors are discussed on the basis of mixed potential theory, etching rate of PS and the state of Ni complex formation. The modified PS layers after the immersion plating were analyzed by X-ray diffraction and X-ray photoelectron spectroscopy. Fourier transform infrared spectroscopy and scanning electron microscopy were also performed to investigate the structural changes and characterizations of PS samples after the plating process. A binary PS/Ni nanostructure without Si oxides is successfully achieved from the alkaline bath.read more
Citations
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Journal ArticleDOI
Surface-enhanced Raman scattering (SERS)-active substrates from silver plated-porous silicon for detection of crystal violet
Farid A. Harraz,Adel A. Ismail,Houcine Bouzid,Saleh A. Al-Sayari,Ali Al-Hajry,Mohammad S. Al-Assiri +5 more
TL;DR: In this paper, the surface-enhanced Raman scattering (SERS) response of AgNPs has been investigated on porous silicon (PSi) surface in a simple immersion plating bath, and a detectable concentration as low as 100 pM of crystal violet has been achieved with an enhancement factor (EF) of 1.3
Journal ArticleDOI
White light luminescence from annealed thin ZnO deposited porous silicon
TL;DR: In this article, photoluminescence properties of annealed ZnO thin films deposited onto a porous silicon (PS) surface by rf-sputtering were investigated.
Patent
Three-dimensional batteries and methods of manufacturing the same
TL;DR: In this article, various methods and apparatus relating to three-dimensional battery structures and methods of manufacturing them are disclosed and claimed, including the use of a backbone structure or anodes.
Journal ArticleDOI
Capacitive humidity sensing properties of SiC nanowires grown on silicon nanoporous pillar array
TL;DR: In this article, a large quantity of entangled SiC nanowires (nw-SiC) with an average diameter of ∼15nm were grown on a silicon nanoporous pillar array (Si-NPA) by a catalyst-assisted chemical vapor deposition method.
Journal ArticleDOI
Improved contacts on a porous silicon layer by electroless nickel plating and copper thickening
J Kanungo,C Pramanik,Sikha Bandopadhyay,Utpal Gangopadhyay,L Das,Hiranmay Saha,Robert T. T. Gettens +6 more
TL;DR: In this paper, stable, low-resistance contacts on porous silicon have been realized by electroless nickel deposition from a very weakly alkaline solution followed by copper thickening.
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