II-VI Compound Semiconductor and High T(c) Superconductor Thin Films Grown by Pulsed Laser Deposition PDF Download
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Author: Wenpin Peter Shen
Publisher:
ISBN:
Category :
Languages : en
Pages : 300
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Author: Wenpin Peter Shen
Publisher:
ISBN:
Category :
Languages : en
Pages : 300
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Author: Shengxi Duan
Publisher:
ISBN:
Category : Epitaxy
Languages : en
Pages : 142
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Author: Mike Abrecht
Publisher:
ISBN:
Category :
Languages : en
Pages : 84
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Author:
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Category : Aeronautics
Languages : en
Pages : 318
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Author: Yilu Li
Publisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages : 97
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Pulsed ultraviolet light from a XeF excimer laser was used to grow thin films of zinc oxide and tin dioxide on (111) p-type silicon wafers within a versatile high vacuum laser deposition system. This pulsed laser deposition system was self-designed and self-built. Parameters such as pressure, target temperature, and distance from the target to the substrate can be adjusted in the system. Scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction spectroscopy, Raman spectroscopy and ellipsometry were used to analyze the structures and properties of ZnO and SnO2 thin films. The critical temperature required to fabricate a crystalline ZnO thin film by pulsed laser deposition was found and has been confirmed. For the SnO2 thin film, the critical temperature required to generate a crystalline structure could not be found because of the temperature limit of the substrate heater used in the experiment. In SnO2 thin films, thermal annealing has been used to convert into crystalline structure with (110), (101) and (211) orientations. After fabricating the amorphous SnO2 thin films, they were put into an oven with specific temperatures to anneal them. The minimum annealing temperature range was found for converting the amorphous SnO2 thin films into SnO2 thin films with a crystalline structure. Thermal annealing has also been applied to some amorphous ZnO thin films which were fabricated under the critical temperature required to produce crystalline ZnO thin films. The minimum annealing temperature range for amorphous ZnO thin films was found and only one orientation (002) shown after annealing. Laser annealing technology has also been applied for converting both amorphous ZnO and SnO2 thin films, and results show that this method was not well suited for this attempt. ZnO thin films and SnO2 thin films with a crystalline structure have inportant widely used in industry, for example, application in devices such as solar cells and UV or blue-light-emitting devices. The aim of this research is to help improving the manufacturing process of ZnO and SnO2 thin films.
Author: Satishchandra B. Ogale
Publisher: Springer Science & Business Media
ISBN: 0387260897
Category : Technology & Engineering
Languages : en
Pages : 416
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Oxides form a broad subject area of research and technology development which encompasses different disciplines such as materials science, solid state chemistry, physics etc. The aim of this book is to demonstrate the interplay of these fields and to provide an introduction to the techniques and methodologies involving film growth, characterization and device processing. The literature in this field is thus fairly scattered in different research journals covering one or the other aspect of the specific activity. This situation calls for a book that will consolidate this information and thus enable a beginner as well as an expert to get an overall perspective of the field, its foundations, and its projected progress.
Author: Santhana Ganapathy Subramanian
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Bismuth-Strontium-Calcium-Copper-Oxide (BSCCO) compounds are an important family of compounds that have one of the highest transition temperatures among all high-temperature superconductors. The compound is known to exist in three distinct phases, commonly referred to as the 2201, 2212 and 2223 phases. Of these three phases, the 2212 and 2223 phases are the most important, as their transition temperature is higher than the boiling point of liquid nitrogen. It is desirable to produce the compound in thin film form, as the bulk samples are normally polycrystalline. This thesis compares thin films produced by two techniques for depositing BSCCO in order to understand the effect of various processing parameters on the final quality of the thin films. Thin films were grown by flash evaporation at Texas A & M University, and by pulsed laser deposition (PLD) at the University of Wollongong, Australia. The latter of these techniques is widely used for growing thin films of various compounds. Single-phase 2212 films were grown on a MgO substrate using the pulsed laser deposition technique from commercially available 2212 powder. The effect of annealing on the thin films was also studied.
Author: Blaine D. Johs
Publisher:
ISBN:
Category :
Languages : en
Pages : 104
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Author: Justin Lawler
Publisher:
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Category :
Languages : en
Pages :
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Author: C. E. Moroșanu
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 724
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