Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Zinc Ion And Neutral Emission From Single Crystal Zinc Oxide During 193 Nm Excimer Laser Exposure
Download Zinc Ion And Neutral Emission From Single Crystal Zinc Oxide During 193 Nm Excimer Laser Exposure full books in PDF, epub, and Kindle. Read online Zinc Ion And Neutral Emission From Single Crystal Zinc Oxide During 193 Nm Excimer Laser Exposure ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Zinc Ion and Neutral Emission from Single Crystal Zinc Oxide During 193-nm Excimer Laser Exposure by :
Download or read book Zinc Ion and Neutral Emission from Single Crystal Zinc Oxide During 193-nm Excimer Laser Exposure written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Mass resolved time-of-flight measurements on neutral zinc atoms and zinc ions show energetic ions and neutrals during 193-nm irradiation of single crystals of semiconducting zinc oxide. Typical Zn+ kinetic energies are 3-5 eV. At fluences (energy per unit area per pulse) below 200 mJ/cm2, the ion intensities (per laser pulse) decrease monotonically to low values with laser pulse number. The depletion kinetics change from exponential to second order near 50 mJ/cm2. We attribute this change to the annihilation of defects yielding Zn+ emission when Zn+ or other surface defects become mobile. At fluences between 200 and 300 mJ/cm2, Zn+ emission becomes more sustained due to defects created by the laser. In this same fluence range, we observe the onset of detectable neutral atomic zinc emission. These neutral atoms display Maxwell-Boltzmann kinetic energy distributions w th effective surface temperatures that approach 5000 K as the fluence is raised to 350 mJ/cm2. These high surface temperatures are remarkable given the low etch rates observed at these fluences, suggesting that heated layer is extremely thin. We propose emission mechanisms and experiments to resolve outstanding questions.
Book Synopsis Excimer Laser Interaction with Zinc Oxide by : Enamul Haque Khan
Download or read book Excimer Laser Interaction with Zinc Oxide written by Enamul Haque Khan and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: When single crystal ZnO is exposed to 193-nm laser photons in vacuum at fluences below 100 mJ/cm2, isolated Zn vacancies are produced due to the emission of energetic Zn+. The pair wise formation of Zn vacancies and Zn+ interstitials is attributed to the photochemical excitation of anti-bonding Zn-O bonds. Interstitial Zn + diffuses to the surface where it is loosely bound to the surface---often atop a photoionizable electron trap; adsorbed Zn+ is emitted when the underlying trap is photoionized. Isolated Zn vacancies also diffuse following the laser pulse. These electron traps can reduce the near-surface free carrier concentration by as much as a factor of five on irradiated samples.
Book Synopsis Zinc Oxide - A Material for Micro- and Optoelectronic Applications by : Norbert H. Nickel
Download or read book Zinc Oxide - A Material for Micro- and Optoelectronic Applications written by Norbert H. Nickel and published by Springer Science & Business Media. This book was released on 2005-12-28 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recently, a significant effort has been devoted to the investigation of ZnO as a suitable semiconductor for UV light-emitting diodes, lasers, and detectors and hetero-substrates for GaN. Research is driven not only by the technological requirements of state-of-the-art applications but also by the lack of a fundamental understanding of growth processes, the role of intrinsic defects and dopants, and the properties of hydrogen. The NATO Advanced Research Workshop on “Zinc oxide as a material for micro- and optoelectronic applications”, held from June 23 to June 25 2004 in St. Petersburg, Russia, was organized accordingly and started with the growth of ZnO. A variety of growth methods for bulk and layer growth were discussed. These techniques comprised growth methods such as closed space vapor transport (CSVT), metal-organic chemical vapor deposition, reactive ion sputtering, and pulsed laser deposition. From a structural point of view using these growth techniques ZnO can be fabricated ranging from single crystalline bulk material to polycrystalline ZnO and nanowhiskers. A major aspect of the ZnO growth is doping. n-type doping is relatively easy to accomplish with elements such al Al or Ga. At room temperature single crystal ZnO exhibits a resistivity of about 0. 3 -cm, an electron mobility of 2 17 -3 225 cm /Vs, and a carrier concentration of 10 cm . In n-type ZnO two shallow donors are observable with activation energies of 30 – 40 meV and 60 – 70 meV.
Book Synopsis Diffusion of Zinc and Oxygen in Single Crystals of Zinc Oxide by : Elmer Lee Williams
Download or read book Diffusion of Zinc and Oxygen in Single Crystals of Zinc Oxide written by Elmer Lee Williams and published by . This book was released on 1959 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Zinc Oxide and Related Materials: Volume 957 by : Jürgen H. Christen
Download or read book Zinc Oxide and Related Materials: Volume 957 written by Jürgen H. Christen and published by . This book was released on 2007-04-05 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: The MRS Symposium Proceeding series is an internationally recognised reference suitable for researchers and practitioners. The topics covered in this volume, first published in 2007, include devices, defects, spintronics and magnetism, growth, optical properties and nanostructures, and doping and processing TFTs.
Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2626 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laser Fluorescence Spectroscopy of Zinc Neutrals Originating from Laser-Irradiated and Ion-Bombarded Zinc Sulfide and Zinc Surfaces by : HF. Arlinghaus
Download or read book Laser Fluorescence Spectroscopy of Zinc Neutrals Originating from Laser-Irradiated and Ion-Bombarded Zinc Sulfide and Zinc Surfaces written by HF. Arlinghaus and published by . This book was released on 1988 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Time-of-flight (TOF) measurements, employing high-resolution laser-induced fluorescence spectroscopy (LFS) as a probe, have been used to measure the yield and velocity distribution of Zn atoms ejected from a ZnS single crystal under irradiation by 308 nm photons. By comparison with the known io: sputtering yield for pure zinc, the absolute yield was determined to be 109 atoms/pulse at a laser fluence of 30 mJ/cm2. The velocity distribution of the Zn atoms could be fitted by a Maxwell-Boltzmann distribution, having a characteristic temperature of 2360 K. In addition, Doppler-shift techniques have been combined with TOF measurements in order to separate prompt from delayed emission of ablated atoms, as well as to probe possible molecular or cluster fragmentation. The results obtained suggest the possibility of molecular or cluster emission from ZnS.
Book Synopsis Surface Properties of Zinc Oxide Single Crystals by : Hans Joseph Krusemeyer
Download or read book Surface Properties of Zinc Oxide Single Crystals written by Hans Joseph Krusemeyer and published by . This book was released on 1962 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Zinc Oxide Bulk, Thin Films and Nanostructures by : Chennupati Jagadish
Download or read book Zinc Oxide Bulk, Thin Films and Nanostructures written by Chennupati Jagadish and published by Elsevier. This book was released on 2011-10-10 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: With an in-depth exploration of the following topics, this book covers the broad uses of zinc oxide within the fields of materials science and engineering: - Recent advances in bulk , thin film and nanowire growth of ZnO (including MBE, MOCVD and PLD), - The characterization of the resulting material (including the related ternary systems ZgMgO and ZnCdO), - Improvements in device processing modules (including ion implantation for doping and isolation ,Ohmic and Schottky contacts , wet and dry etching), - The role of impurities and defects on materials properties - Applications of ZnO in UV light emitters/detectors, gas, biological and chemical-sensing, transparent electronics, spintronics and thin film
Book Synopsis Zinc Oxide Rediscovered by : New Jersey Zinc Company
Download or read book Zinc Oxide Rediscovered written by New Jersey Zinc Company and published by . This book was released on 1957 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Defect Studies of Single Crystal and Thin Film Zinc Oxide by Positron Annihilation Spectroscopy and Cathodoluminescence by : Chun-Kit To
Download or read book Defect Studies of Single Crystal and Thin Film Zinc Oxide by Positron Annihilation Spectroscopy and Cathodoluminescence written by Chun-Kit To and published by . This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Low Temperature Oxidation Kinetics of Single Crystal Zinc by : Raichur Sathyanarayana (G.)
Download or read book Low Temperature Oxidation Kinetics of Single Crystal Zinc written by Raichur Sathyanarayana (G.) and published by . This book was released on 1970 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sintering of Zinc Oxide by : L. F. Norris
Download or read book Sintering of Zinc Oxide written by L. F. Norris and published by . This book was released on 1962 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Mechanism of Zinc Oxide Single Crystal Vaporization by : Peter Paul Bihuniak
Download or read book The Mechanism of Zinc Oxide Single Crystal Vaporization written by Peter Paul Bihuniak and published by . This book was released on 1972 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies of Oxygen Implantation Induced Deep Level Defects in Zinc Oxide Single Crystal by : Ziran Ye
Download or read book Studies of Oxygen Implantation Induced Deep Level Defects in Zinc Oxide Single Crystal written by Ziran Ye and published by . This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Studies of Oxygen Implantation Induced Deep Level Defects in Zinc Oxide Single Crystal" by Ziran, Ye, 叶自然, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Zinc Oxide (ZnO)is a wide band gap semiconductor which has attracted great attention because of its wide applicability. In order to obtain semiconductor devices with stable and reproducible properties further study of deep level defects is essential. DLTS (Deep level Transient Spectroscopy) is a direct and straightforward techniqueto determine the energy level of the deep level defects. Other information such as activation energy and capture cross section of the defect can also be obtained through this method. In our study ZnO single crystal samples were implanted by oxygen with the energy of 150keV. After the pretreatment of hydrogen peroxide, Schottky contacts were fabricated with Au film deposited by thermal evaporation. Deep level defects were studied by deep level transient spectroscopy (DLTS). Single peak spectra were observed in the as-implanted sample and samples anneal at 350oC, 650oC and 750oC with the corresponding activation energy decreasing with the annealing temperature from 0.29eV as found in theas-implanted sample. Three peaks were identified in the DLTS spectra of the 900oC sample, with the activation energies of 0.11eV, 0.16eV and 0.37eV respectively.After analysis in detail we found some peaks in the DLTS spectra were the combination of two other peaks, dominated in different temperature range. The thermal evolutions of the deep levels up to the temperature of 1200oC were also investigated. DOI: 10.5353/th_b4715385 Subjects: Zinc oxide - Defects Deep level transient spectroscopy Ion implantation
Book Synopsis Electron spectrosopic studies of the prism surface of single crystal zinc oxide by : Graham Paul Hopkins
Download or read book Electron spectrosopic studies of the prism surface of single crystal zinc oxide written by Graham Paul Hopkins and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Surface Properties of Zinc Oxide Single Crystals: Proefschrift by : Hans Joseph Krusemeyer
Download or read book Surface Properties of Zinc Oxide Single Crystals: Proefschrift written by Hans Joseph Krusemeyer and published by . This book was released on 1962 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
