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Article
Activated carbonized pistachio nut shells for electrochemiluminescence detection
This paper reports the first ever use of carbonized pistachio nut shells (CPNS), as an electrode material for electrochemiluminescence (ECL) detection. The carbonization of pistachio nut shells was achieved at...
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Chapter
Introduction to Carbon Materials
Our own existence witnesses the peculiar role played by carbon among all atoms of the periodic table. The energy levels of the various bonding hybridizations of the carbon atom are so close that different conf...
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Article
Effect of Carbon Content on the Optical Properties of a-CSiSn:H Alloy
A careful study of the optical constants of a-CSiSn:H films prepared under very similar conditions with varying C or Sn concentration is here presented. Results of an attempt via the use of an effective medium...
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Article
Morphology and magnetic properties of island-like Co and Ni films obtained by de-wetting
The morphological, structural, and magnetic properties of Co and Ni films of different thicknesses grown by RF sputtering on a Si–SiO substrate and submitted to controlled diffusion of atoms on the substrate (...
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Article
Luminescence, recombination and laser damaging of a-CN:OH films grown by reactive sputtering
In this work, porous a-CN thin films (with hydroxyl inclusions) were grown by rf sputtering system and their photoluminescence (PL) properties investigated. In particular, we investigated the stability of the ...
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Article
Deposition and Characterization of Diamond-Like Carbon Thin Films by Electro-Deposition Technique Using Organic Liquid
Diamond-like carbon films were synthesized by electro-deposition technique from an organic liquid (a solution of alpha- and beta-pinenes in n-hexane) on silicon substrate at room temperature and at room pressu...
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Article
Density of states in amorphous carbon and its modification by annealing
The effect of annealing on the electron density of states in amorphous carbon a-C and amorphous hydrogenated carbon a-C:H has been studied. a-C and a-C:H layers were grown by magnetron sputtering of a graphite ta...
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Article
Characterization of the Structure of Carbon Material Through the sp3/sp2 Bonding Ratio Measurements
Hydrogenated amorphous carbon (a-C:H) films have been deposited by sputter assisted plasma chemical vapor deposition (CVD). The relative concentration of sp3 and sp2 hybridized carbon in samples is determined by ...
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Article
Thermal and Mechanical Properties of Diamond-Like a-C:H Films
Diamond-like amorphous carbon and hydrogenated amorphous carbon films (DLC) prepared by rf sputtering have been characterized by means of measurements of optical gap, hardness and Young's modulus. Preliminary ...
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Article
Correlation Between Amorphous Silicon Solar Cell Parameters and Photoinduced Current Noise Power Spectrum
A new technique based on measurements of photoinduced current noise in amorphous silicon solar cells is reported. A l/fn (n~l) component, superimposed to a frequency independent one due to simple shot noise, is a...
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Article
Photoinduced current noise ina-Si: H solar cells
Measurements of photoinduced current noise in amorphous silicon solar cells are reported. A 1/f n (n≈1) component, superimposed to a frequency-independent one due to simple shot noise, is attribut...
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Chapter and Conference Paper
Influence of Silicon on Properties of Hydrogenated Amorphous Carbon
Films of a-SiC:H having different silicon contents have been deposited at room temperature by sputter assisted plasma CVD of a graphite target in a silane — argon atmosphere. The insertion of small amounts of ...
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Chapter
Conductivity in Amorphous Carbon and Amorphous Hydrogenated Carbon Films
There has been a considerable recent interest in amorphous carbon (a-C) and amorphous hydrogenated carbon (a-C:H) films. These films present a combination of a number of useful properties such as a high value ...
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Chapter
Band Edges and Gap States by Optical Absorption and Electron Spin Resonance in Amorphous Carbon (a-C) and Hydrogenated Amorphous Carbon (a-C:H)
There have recently been many experimental and theoretical studies of amorphous carbon (a-C) and hydrogenated amorphous carbon (a-C:H) 1, 2. In a-C, the carbon atoms form both fourfold (sp3) sites (diamond-like) ...
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Article
Diamond-Like Films As Optical And Protective Coatings
Films of amorphous carbon (a-C) and hydrogenated amorphous carbon (a-C:H) are deposited by R.F. Magnetron Sputtering and Sputter Assisted Plasma CVD respectively and their properties are compared. It is found ...
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Article
Photoinduced Noise in Amorphous Semiconductor Films
Electrical noise measurements have been performed on amorphous semiconductor films under irradiation with monochromatic light at different wavelengths. The Power Spectrum Densities (PSDs) of highly photoconduc...
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Article
Physical Properties of Annealed a-CSiGe:H Alloys
The optoelectronic properties of the new semiconducting alloy a-CSiGe:H have been studied with particular regard to the dependence upon deposition and annealing temperature. Infrared and electrical results are...
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Article
Physical properties and structure ofa-Si1−x C x : H alloy films
Two sets ofa-SiC:H films were deposited by glow discharge in an Ar-SiH4-CH4 atmosphere to investigate the effect of a variable CH4/SiH4 ratio on the physical properties. The composition of the films was determine...
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Chapter and Conference Paper
Structure and Optical Properties of Hydrogenated Amorphous Carbon-Tin (Ac:Sn:H) Alloys Prepared by Sputter-Assisted Plasma Chemical Deposition Technique
aC:Sn:H films were obtained by sputtering β-tin targets in plasma atmosphere of methane and argon in variable proportions and preliminary characterization was reported on earlier(1). Here the optical and electric...
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Article
Thickness Dependence of the Optical and Electrical Properties of Thin a-Si:H Films
Optical and electrical properties are investigated as a function of thickness for two sets of samples of a-Si:H films deposited respectively by RF magnetron sputtering and by RF glow discharge under the same c...
