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Hydrothermal Growth Of Zinc Oxide Nanostructures Conditions

Posted on:2014-11-22Degree:MasterType:Thesis
Country:ChinaCandidate:S F DaiFull Text:PDF
GTID:2251330425967282Subject:Optics
Abstract/Summary:PDF Full Text Request
In recent years, low dimensional nanostructures of semiconductor materials graduallyinto people’s vision, because of its potential advantages reflected in the number of dimensionsand size of the physical nature of the basic research, make it in optoelectronic nanodevicesand functional materials applied research become a hot spot.Zinc oxide, as a new generation of wide gap with a semiconductor material, also has arelatively high electron binding energy (60meV) and optical gain coefficient (300cm-1) anda unique catalytic and photoelectrochemical properties under normal temperature conditionshave excellent physical properties, its application in the field of solar cells, piezoelectricmaterials, ultraviolet detectors, optical switching and logic circuits have broad applicationprospects. The key reserves of zinc oxide Earth, zinc oxide or a non-toxic materials, zincoxide can also be applied to a wide range of household chemicals, paints and otherday-to-day applications. It becomes a future attractive new material.Decided many oxide semiconductor, because of the unique structural characteristics ofzinc oxide, zinc oxide is a form of extremely rich material from the beginning of the zincoxide nanofilm later nanowires (nanorods) nanocrystals, as well as a relatively newnanotubes, nanobelts, etc.. More complex structure more sophisticated nano spend combnano nano nails and other special structures also worldwide successfully prepared. These richmorphology of zinc oxide with a variety of unique physical properties, to play a unique rolein different occasions. Expected to conduct more in-depth research in nanoscale devices andmicroelectronics direction and play a more important role.In this paper, mainly using the hydrothermal method, ultrasonic spray pyrolysis methodof the production of zinc oxide nanostructures controlled by different conditions, preparednanorods nanoscale arrays of nano-film morphology. Since the original intention of the designof the experiment is the preparation of the morphology of the nature of good nano rod-likestructure, so the majority of the conditions is tempted tuning for nano-rod structure, the othermorphologies nanostructures as contrast conditions analysis. Characterization of the nature ofzinc oxide nanostructures under various conditions using x-ray diffraction, scanning electronmicroscopy, photoluminescence spectrum analysis of the conditions and mechanism of theformation of various morphologies of zinc oxide, and contrast the formation the selection ofconditions of the various forms of nanostructures on the growth of the same morphology ofthe zinc oxide and necessary conditions and can modify the conditions were analyzed. Analysis of the key factors of the zinc oxide nanostructures, reasonable regulation of variousgrowth parameters ultimately achieve the growth of zinc oxide nanostructures. And improvethe reproducibility of the experiment.
Keywords/Search Tags:Zinc oxide, hydrothermal method, nanorod structures
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