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Book The Structural and Optical Properties of Hydrogenated Amorphous Carbon a C H Thin Films Deposited Using a Direct Current plasma Enhanced Chemical Vapour Deposition DC PECVD Technique

Download or read book The Structural and Optical Properties of Hydrogenated Amorphous Carbon a C H Thin Films Deposited Using a Direct Current plasma Enhanced Chemical Vapour Deposition DC PECVD Technique written by Suriani Abu Bakar and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book The Optical Properties of Hydrogenated Amorphous Carbon a C H Thin Films Deposited Using DC PECVD Technique

Download or read book The Optical Properties of Hydrogenated Amorphous Carbon a C H Thin Films Deposited Using DC PECVD Technique written by Bakar Ismail and published by . This book was released on 2009 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Structural and Optical Characterization of Hydrogenated Amorphous Carbon Thin Films

Download or read book Structural and Optical Characterization of Hydrogenated Amorphous Carbon Thin Films written by Dammika P. Manage and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A series of hydrogenated amorphous carbon (a-C:H) semiconducting thin films was deposited using the dc saddle field glow discharge deposition technique. The ion energy during the deposition was varied to achieve films ranging from soft to hard a-C:H. In order to study the structure and the properties of a-C:H films, ultraviolet, visible, infrared, photoluminescence, and X-ray Auger electron spectroscopies, scanning electron microscopy, and mass density measurements, were used as diagnostic techniques to extract information on growth rate, mass density, sp2/sp3 ratio, hydrogen concentration, Tauc gap, photoluminescence, concentration of non-radiative recombination centers, and the degree of cross-linking of the carbon network. Based on these results, the films studied in the present research are found to consist of sp2carbon clusters of which the size increases with increasing mean ion energy during the deposition, resulting in a lower Tauc gap; this is explained in terms of the Robertson model. The growth rate of the films increases due to an increase in the concentration of unsaturated bond sites which act as chemisorption centers for radicals on the growing film surface. The increased hydrogen evolution from the film at higher ion energies results in increases in the sp2 fraction, the degree of cross-linking of the C-C network, and the mass density of a-C:H films. Atmospheric aging of soft a-C:H films reveals a decrease in the concentration of C-H bonds in a-C:H. The proposed reaction paths for the hydrolysis and oxidation of C:H films indicate that the films mainly react with water. Thermal annealing of a-C:H films in vacuum greatly influences the soft a-C:H films, in which the chemical bonds in the hydrocarbon network are restructured due to the evolution of hydrogen, which results in a graphitic structure.

Book Optical Properties of Hydrogenated Amorphouus Carbon Thin Films Using DC PECVD Technique

Download or read book Optical Properties of Hydrogenated Amorphouus Carbon Thin Films Using DC PECVD Technique written by ld Nuruljannah Hashim and published by . This book was released on 2010 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Optical Properties of Hydrogenated Amorphous Carbon a C H Prepared by DC PECVD

Download or read book Optical Properties of Hydrogenated Amorphous Carbon a C H Prepared by DC PECVD written by Kai Fuu Yong (ld) and published by . This book was released on 2009 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book The Jarvis Conklin Mortgage Trust Compamy Kansas City Mo

Download or read book The Jarvis Conklin Mortgage Trust Compamy Kansas City Mo written by and published by . This book was released on with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book A Study of the Microstructure and Growth of Ultra thin Film Amorphous Hydrogenated Carbon a C H Prepared by Plasma Enhanced Chemical Vapour Deposition PECVD

Download or read book A Study of the Microstructure and Growth of Ultra thin Film Amorphous Hydrogenated Carbon a C H Prepared by Plasma Enhanced Chemical Vapour Deposition PECVD written by Robert William Lamberton and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Optical and Mechanical Properties of Amorphous Hydrogenated Carbon Thin Films

Download or read book Optical and Mechanical Properties of Amorphous Hydrogenated Carbon Thin Films written by Calvin Bradford Hopper and published by . This book was released on 1991 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Amorphous Hydrogenated Carbon Films with Diamond Like and Polymer Like Properties

Download or read book Amorphous Hydrogenated Carbon Films with Diamond Like and Polymer Like Properties written by Elena A Konshina and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Results of the study of structural features and optical properties of thin films of amorphous hydrogenated carbon (a-C:H) films prepared by plasma-activated chemical vapor deposition of various hydrocarbon precursors are reviewed. The effect of different factors on the rate of a-C:H films deposition in a DC glow discharge with the magnetron plasma localized near the anode such as voltage, discharge power, gas pressure, relative content of an inert gas in the mixture with a hydrocarbon and other is analyzed. It is shown that the refractive index of a-C:H films can be changed in the interval 2.35-1.55 by increasing the deposition rate and the choice of the appropriate hydrocarbon precursor. The features of the vibration spectra of the diamond-like and polymer-like films are discussed. The correlations of the structural peculiarities and of the optical absorption edge, gap width, and conductivity as well as the absorption spectra in visible region and the ratio of the fundamental bands in Raman scattering spectra are estimated. Examples of using the optical properties of the a-C:H films are given.

Book Atmospheric Pressure Plasma CVD of Amorphous Hydrogenated Silicon Carbonitride a SiCN

Download or read book Atmospheric Pressure Plasma CVD of Amorphous Hydrogenated Silicon Carbonitride a SiCN written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Amorphous hydrogenated silicon carbonitride (a-SiCN:H) thin films are synthesized by atmospheric pressure plasma enhanced chemical vapor (AP-PECVD) deposition using the Surfx Atomflow{trademark} 250D APPJ source with triethylsilane (HSiEt3, TES) and nitrogen as the precursor and the reactive gases, respectively. The effect of the substrate temperature (T{sub s}) on the growth characteristics and the properties of a-SiCN:H films was evaluated. The properties of the films were investigated via scanning electron microscopy (SEM), atomic force microscopy (AFM) for surface morphological analyses, Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS) for chemical and compositional analyses; spectroscopic ellipsometry for optical properties and thickness determination and nanoindentation to determine the mechanical properties of the a-SiCN:H films. Films deposited at low T{sub s} depict organic like features, while the films deposited at high T{sub s} depict ceramic like features. FTIR and XPS studies reveal that an increases in T{sub s} helps in the elimination of organic moieties and incorporation of nitrogen in the film. Films deposited at T{sub s} of 425 C have an index of refraction (n) of 1.84 and hardness (H) of 14.8 GPa. A decrease in the deposition rate between T{sub s} of 25 and 250 C and increase in deposition rate between T{sub s} of 250 and 425 C indicate that the growth of a-SiCN:H films at lower T{sub s} are surface reaction controlled, while at high temperatures film growth is mass-transport controlled. Based on the experimental results, a potential route for film growth is proposed.

Book Properties and Characterization of Amorphous Carbon Films

Download or read book Properties and Characterization of Amorphous Carbon Films written by J.J. Pouch and published by Trans Tech Publications Ltd. This book was released on 1991-01-01 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt: Amorphous, hydrogenated carbon (AHC) films can be deposited on various substrates using several techniques, e.g. plasma deposition and ion beam deposition. The resulting films can be hard, wear resistant and transparent.