Nitrogen Incorporation in Nanocrystalline Diamond Thin Films PDF Download

Author: Kwok Leung Ma
Publisher:
ISBN:
Category : Diamond thin films
Languages : en
Pages : 184

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Author: James Patrick Birrell
Publisher:
ISBN:
Category : Diamond thin films
Languages : en
Pages : 3950

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Author: Elias James Garratt
Publisher:
ISBN:
Category :
Languages : en
Pages : 130

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Book Description
Significant progress in area of nano-structured thin film systems has taken place in recent decades. In particular, diamond thin film systems are being widely studied for their wear resistant, optical and electronic properties. Of the various methods researchers use to modify the structure of such films, three techniques in particular are of interest due to their versatility: modification of the growth atmosphere, growth on metalized substrates, providing an interfacial layer, and modification through post-growth ion implantation. The aim of this study is to investigate the effects each has to the structure and composition of elements. Different techniques are applied in each section; nitrogen gas dilution in a microwave plasma CVD system, diamond deposition on a metal interfacial layer and ion implantation in thin nanocrystalline diamond film. The forms of nanocrystalline diamond film resulting from such modifications are investigated using advanced spectroscopic and spectrometric techniques, as well as mechanical testing and surface mapping. The impact of these characterizations will provide valuable perspective to researchers in materials science. Understanding the changes to the structure and properties of this class of thin films, which can be induced through various mechanisms, will allow future researchers to refine these films towards technological applications in areas of hard coatings, electronics and photonics.

Author: Tanvi Nikhar
Publisher:
ISBN: 9781687903624
Category : Electronic dissertations
Languages : en
Pages : 62

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Diamond has many superior electric and electronic properties over other materials, yet its application in electronic devices is severely limited due to difficulties in producing n-type conductivity in diamond as available dopants all have activation energy much larger than the thermal energy, kT, at room temperature. The substitutional doping of nitrogen in grain boundaries of granular graphitic-rich ultra-nanocrystalline diamond (UNCD) films provides for high conductivities even at room temperature with an apparent activation energy to be much lower than kT. Such low activation energy is a consequence of the formation of new electronic states associated with carbon and nitrogen near and above the Fermi level. However, the relative contribution of sp2 graphitic phase and incorporated nitrogen to the conduction of the films remains unclear.In the present work, structural and electrical properties of nitrogen-incorporated (N)UNCD films are studied as a function of deposition temperature and nitrogen concentration in the precursor synthesis gas mixture consisting of H2, CH4 and N2. Four sets of (N)UNCD films with 0%, 5%, 10% and 20% nitrogen concentration in the synthesis gas were produced by microwave assisted chemical vapor deposition on intrinsic (100)-oriented Si substrates.Resistance tunability over a range of about 4 orders of magnitude was achieved by varying the growth parameters. Raman spectroscopy and scanning electron microscopy (SEM) results show that the UNCD films undergo a progressive and highly reproducible material phase transformation, from ultra-nano-diamond to nanocrystalline graphite as deposition temperature increases. Addition of nitrogen increases the amount of sp2 bonded carbon in the films thus enhancing the physical connectivity in the grain boundary network that have high electronic state density and leads to improved conductivity. However, crystallinity of sp2 carbon phase remains another (previously underestimated) major factor in determining the conductivity of (N)UNCD films.

Author: Nianjun Yang
Publisher: Springer
ISBN: 303012469X
Category : Technology & Engineering
Languages : en
Pages : 507

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Book Description
This book is in honor of the contribution of Professor Xin Jiang (Institute of Materials Engineering, University of Siegen, Germany) to diamond. The objective of this book is to familiarize readers with the scientific and engineering aspects of CVD diamond films and to provide experienced researchers, scientists, and engineers in academia and industry with the latest developments and achievements in this rapidly growing field. This 2nd edition consists of 14 chapters, providing an updated, systematic review of diamond research, ranging from its growth, and properties up to applications. The growth of single-crystalline and doped diamond films is included. The physical, chemical, and engineering properties of these films and diamond nanoparticles are discussed from theoretical and experimental aspects. The applications of various diamond films and nanoparticles in the fields of chemistry, biology, medicine, physics, and engineering are presented.

Author: Olga A. Shenderova
Publisher: William Andrew
ISBN: 1437734650
Category : Science
Languages : en
Pages : 582

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Book Description
Ultrananocrystalline Diamond: Synthesis, Properties, and Applications is a unique practical reference handbook. Written by the leading experts worldwide it introduces the science of UNCD for both the R&D community and applications developers using UNCD in a diverse range of applications from macro to nanodevices, such as energy-saving ultra-low friction and wear coatings for mechanical pump seals and tools, high-performance MEMS/NEMS-based systems (e.g. in telecommunications), the next generation of high-definition flat panel displays, in-vivo biomedical implants, and biosensors. This work brings together the basic science of nanoscale diamond structures, with detailed information on ultra-nanodiamond synthesis, properties, and applications. The book offers discussion on UNCD in its two forms, as a powder and as a chemical vapor deposited film. Also discussed are the superior mechanical, tribological, transport, electrochemical, and electron emission properties of UNCD for a wide range of applications including MEMS/ NEMS, surface acoustic wave (SAW) devices, electrochemical sensors, coatings for field emission arrays, photonic and RF switching, biosensors, and neural prostheses, etc. Ultrananocrystalline Diamond summarises the most recent developments in the nanodiamond field, and presents them in a way that will be useful to the R&D community in both academic and corporate sectors. Coverage of both nanodiamond particles and films make this a valuable resource for both the nanotechnology community and the field of thin films / vacuum deposition. Written by the world's leading experts in nanodiamond, this second edition builds on its predecessor's reputation as the most up-to-date resource in the field.

Author: Christopher Nebel
Publisher: Elsevier
ISBN: 0080541046
Category : Science
Languages : en
Pages : 411

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Book Description
Part II reviews the state of the art of thin film diamond a very promising new semiconductor that may one day rival silicon as the material of choice for electronics. Diamond has the following important characteristics; it is resistant to radiation damage, chemically inert and biocompatible and it will become "the material" for bio-electronics, in-vivo applications, radiation detectors and high-frequency devices. Thin-Film Diamond II is the first book to summarize state of the art of CVD diamond in depth. It covers the most recent results regarding growth and structural properties, doping and defect characterization, hydrogen in and on diamond as well as surface properties in general, applications of diamond in electrochemistry, as detectors, and in surface acoustic wave devices * Accessible by both experts and non-experts in the field of semi-conductors research and technology, each chapter is written in a tutorial format· * Assisting engineers to manufacture devices with optimized electronic properties· * Truly international, this volume contains chapters written by recognized experts representing academic and industrial institutions from Europe, Japan and the US

Author:
Publisher:
ISBN:
Category : Diamond thin films
Languages : en
Pages :

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Author: Jimmy Lee Davidson
Publisher: The Electrochemical Society
ISBN: 9781566772556
Category : Technology & Engineering
Languages : en
Pages : 554

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Book Description
"The sixth International Symposium on Diamond Materials was held at the 196th Meeting of the Electrochemical Society in Honolulu, Hawaii from Ooctober 17 to October 22, 1999"--Pref.

Author: Dieter M. Gruen
Publisher: Springer Science & Business Media
ISBN: 1402033222
Category : Science
Languages : en
Pages : 410

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Book Description
We are pleased to present the Proceedings of the NATO Advanced Research Workshop “Syntheses, Properties and Applications of Ultrananocrystalline Diamond” which was held June 7-10, 2004 in St. Petersburg, Russia. The main goal of the Workshop was to provide a forum for the intensive exchange of opinions between scientists from Russia and NATO countries in order to give additional impetus to the development of the science and applications of a new carbon nanostructure, called ultrananocrystalline diamond (UNCD) composed of 2-5 nm crystallites. There are two forms of UNCD, dispersed particles and films. The two communities of researchers working on these two forms of UNCD have hitherto lacked a common forum in which to explore areas of scientific and technological overlap. As a consequence, the two fields have up to now developed independently of each other. The time had clearly come to remedy this situation in order to be able to take full advantage of the enormous potential for societal benefits to be derived from exploiting the synergistic relationships between UNCD dispersed particulates and UNCD films. The NATO sponsored ARW therefore occurred in a very timely manner and was successful in beginning the desired dialogue, a precondition for making progress toward the above stated goal. The discovery of UNCD completes a triadof nanostructured carbonswhich includes fullerenes and nanotubes.