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Dissertations / Theses on the topic 'Zinc Oxide (ZnO) Synthesis'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 September 2023

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1

Mai, Wenjie. "Synthesis, characterization and application of ZnO nanomaterials." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/28172.

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Thesis (M. S.)--Materials Science and Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: Wang, Zhong Lin; Committee Member: Gall, Kenneth A.; Committee Member: Snyder, Robert L.; Committee Member: Wong, Ching-Ping; Committee Member: Wu, C.F. Jeff.

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2

Chang, Yanling. "ZnO nanocones and nanoplatelets: synthesis and characterization." Thesis, Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/37253.

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Nanowire structure plays an important role in the development of nanotechnology. However, further study shows that the shape of nanowires may not be the ideal morphology for some applications such as solar cells and sensors. Thus, the purpose of this thesis is to find a low cost and high yield approach to the synthesis of other morphologies of nanostructures in order to further improve the performance of these nanodevices. To this end, a chemical approach has been extended to the synthesis ZnO nanocones and platelets. With UV illumination, the synthesis of ZnO nanocones was achieved on GaN

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3

Soares, Costa Josiane. "Magnetron sputtered ZnO layers : synthesis, characterization and oxygen reduction investigations." Thesis, Brest, 2019. http://www.theses.fr/2019BRES0037.

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La corrosion est un processus électrochimique impliquant une réaction d'oxydation (dissolution du métal) équilibrée par une réaction de réduction. La réduction de l’oxygène (ORR, oxygen reduction reaction) est l'une des principales réactions cathodiques en corrosion. L'oxygène peut être réduit directement en ions hydroxyle ou indirectement avec le peroxyde d'hydrogène comme espèce intermédiaire. Dans cette thèse de doctorat, l’ORR a été étudiée sur des couches de ZnO qui est un produit de corrosion commun du zinc, un métal de grand intérêt industriel. Des électrodes modèles (films de ZnO textu

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4

Akgun, Mehmet Can. "A Parametric Study On Hydrothermal Synthesis Of Zinc Oxide Nanowires With Various Zinc Salts." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614230/index.pdf.

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ZnO is a promising semiconducting material for manufacturing optoelectronic devices. Its most important properties are its wide and direct band gap and its high electron-hole binding energy. Synthesis of ZnO in bulk and thin film form has been investigated intensively over recent decades. Likewise, nanomaterials have been in the point of focus for their different properties compared to their bulk form. The vastly increased ratio of surface area to volume and change in electronic properties with great reduction in particle size enable improved performance in conventional applications where thei

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5

Yang, Li Li. "Synthesis and Characterization of ZnO Nanostructures." Doctoral thesis, Linköpings universitet, Institutionen för teknik och naturvetenskap, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-60815.

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One-dimensional ZnO nanostructures have great potential applications in the fields of optoelectronic and sensor devices. Therefore, it is very important to realize the controllable growth of one-dimensional ZnO nanostructures and investigate their properties. The main points for this thesis are not only to successfully realize the controllable growth of ZnO nanorods (ZNRs), ZnO nanotubes (ZNTs) and ZnMgO/ZnO heterostructures, but also investigate the structure and optical properties in detail by means of scanning electron microscope (SEM), transmission electron microscope (TEM), resonant Rama

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6

Syed, Atif. "Synthesis, fabrication and characterisation of zinc oxide nanostructures for biomimetic, drug delivery and biosensing applications." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/28735.

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A successful cancer treatment is a combination of early diagnosis and efficient use of anticancer drugs. There is a chance of approximately 70 - 90% of cancer patients surviving if the diagnosis is conducted early. That means if a diagnosis system is in place which can detect multiple types of cancer at an early stage, a potential cancer therapy is most likely to succeed. However, at present, the available biomedical sensors are unable to detect and differentiate between cancerous cells or tumours. They are also not able to provide continuous real-time monitoring of a patient. Additionally, or

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7

Guo, Lei. "Synthesis of Zinc Oxide Fiber and Its Application in Dye Sensitized Solar Cells." Miami University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=miami1283204966.

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8

Yu, Dongshan. "Controlled synthesis of ZnO nanowires towards the fabrication of solar cells." VCU Scholars Compass, 2009. http://scholarscompass.vcu.edu/etd/1856.

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In recent years, quasi-one-dimensional materials have attracted a lot of research attention due to their remarkable properties, and their potential as building blocks for nanoscale electronic and optoelectronic devices. A modified chemical vapor deposition (CVD) method has been used to synthesize ZnO nanowires. Electron microscopy and other characterization techniques show that nanowires having distinct morphologies when grown under different conditions. The effects of reaction parameters including reaction time, temperature, carrier gas flow rate, substrates and catalyst material upon the siz

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9

Hughes, William L. "Synthesis and characterization of zinc oxide nanostructures for piezoelectric applications." Diss., Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-08232006-155547/.

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Thesis (Ph. D.)--Materials Science and Engineering, Georgia Institute of Technology, 2007.<br>Wang, Zhong Lin, Committee Chair ; Wong, C.P., Committee Member ; Summers, Christopher J., Committee Member ; Degertekin, F. Levent, Committee Member ; Bottomley, Lawrence A., Committee Member.

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10

Kharat, D. K. "Solid state (chemical) synthesis and electrical characterization of zinc oxide (znO) based electronic ceramic sensors." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 1993. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/3064.

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11

Young, Michael I. "Synthesis of zinc oxide nanoparticles with different morphologies by wet chemistry routes." Thesis, Loughborough University, 2016. https://dspace.lboro.ac.uk/2134/25368.

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The objectives of this project were to synthesise semi-conducting ceramic nanoparticles including zinc oxide (ZnO) and aluminium doped zinc oxide (AZO) through a wet chemistry route to obtain nanoparticles with a controlled size and morphology. Wet chemistry methods (co-precipitation method and hydrothermal method) were used to synthesise ZnO and AZO particles. In the synthesis, various compounds and morphologies were synthesised. ZnO, Zn(OH)2 and unknown phases were co-precipitated, with only ZnO obtained following hydrothermal treatment. Morphologies ranging from platelets, flower-like, nano

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12

Pandey, Bimal. "Synthesis, Characterization, Structural, and Optical Properties of Zinc Oxide Nanostructures Embedded in Silicon Based Substrates." Thesis, University of North Texas, 2014. https://digital.library.unt.edu/ark:/67531/metadc500222/.

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Structural and optical properties of ZnO nanostructures synthesized by low energy ion implantation technique were examined. ZnO molecular ions were implanted into Si/SiO2 substrates at room temperature and then furnace annealed under different temperatures and environments. In all as-implanted samples only Zn nanostructures with varying diameters distributed into the Si/SiO2 matrices were observed. No trace of ZnO was found. The distributions of Zn nanostructures in Si/SiO2 closely matched results from Stopping and Range of Ions in Matter (SRIM) simulations. During annealing at 750 oC, Zn dif

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13

Perraud, Igor. "Combustion auto-propagée et mécanosynthèse de ZnS : étude des conversions ZnS <->ZnO et application à la désulfuration des gaz." Thesis, Montpellier 2, 2012. http://www.theses.fr/2012MON20097/document.

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Aujourd'hui, l'impact environnemental de chaque technologie fait l'objet de toutes les attentions. L'élimination des composés soufrés et surtout de H2S dans les gaz entre dans cet aspect écologique au sein de plusieurs processus industriels. L'oxyde de zinc est utilisé comme adsorbant régénérable pour la désulfuration. Le but de ce travail est la préparation de filtres monolithiques macroporeux et de nanopoudres de ZnO avec une forte capacité en soufre et facilement régénérable, ainsi que l'optimisation de leurs propriétés.Des matériaux composites ZnS/NaCl sont tout d'abord synthétisés par com

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14

Ghifari, Najla. "Microfluidic-based colloidal ZnO microcapsules : synthesis, structure,organization and first applications." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPAST066.

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Ce travail se concentre sur le développement d’une approche microfluidique originale à base degouttelettes pour générer des sphères de ZnO de taille micrométrique très monodispersées avec une taille et une morphologie bien contrôlées. Cette approche est simple et prometteuse non seulement pour la fabrication de microcapsules de ZnO de taille uniforme, avec une taille ajustable et un contrôle précis à l’échelle micrométrique, mais aussi pour acquérir de nouvelles connaissances sur la compréhension des processus de croissance colloïdale et l’auto-organisation des nanoparticules de ZnO par la voi

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15

Zhu, Yao. "ZnO nanoparticles as a luminescent down-shifting layer for solar cells." Thesis, Lyon, INSA, 2015. http://www.theses.fr/2015ISAL0090/document.

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Le but de cette thèse était de concevoir des matériaux à base de nanoparticules de ZnO qui puissent être utilisés de manière efficaces comme couche de down-shifting sur la face avant des cellules solaires photovoltaiques. Le défi principal a donc été d’obtenir des nanoparticules de ZnO avec un rendement de photoluminescence (PL QY) aussi élevé que possible. Diverses méthodes ont été et comparées utilisées pour la synthèse de nanoparticules de ZnO. Nous avons en premier lieu étudié des particules synthétisées par voie physique (le dépôt par jet d’agrégats de basse énergie, LECBD). Les particule

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16

Zhou, Zhengzhi. "Synthesis of one-dimensional nanostructure materials." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/29703.

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Thesis (Ph.D)--Chemical Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: Deng,Yulin; Committee Member: Hsieh, Jeffery S.; Committee Member: Nair, Sankar; Committee Member: Singh, Preet; Committee Member: Yao, Donggang. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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17

Fiefhaus, Silas R. "The Optimization of The Synthesis and Characterization of Vapor-Liquid-Solid Grown ZnO Nanowires." UKnowledge, 2016. http://uknowledge.uky.edu/chemistry_etds/62.

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ZnO nanowires are a promising material with great semiconductor properties. ZnO nanowires were prepared by carbothermal reduction and vapor-liquid-solid growth mechanism. Altering a variety of parameters ranging from mole to mole ratio of ZnO to C all the way to gas flow rate was examined. The nanowires were then characterized and their morphology examined under a SEM to observe what effect the parameter had on the morphology of the nanowires. From the experiments and the parameters tested it was observed that in order to produce the highest quality straight nanowires one should use a mole to

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18

Daugherty, Timothy J. "Computational Fluid Dynamics Modeling and Experimental Investigation of a Chemical Vapor Deposition Synthesis of ZnO Nanostructures." Youngstown State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1464802505.

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19

Madalossi, Natiara Vaughn 1985. "Investigação de métodos de síntese de nanobastões de ZnO para aplicação em dispositivos piezoelétricos." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/250549.

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Orientadores: Italo Odone Mazali, Talita Mazon<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Química<br>Made available in DSpace on 2018-08-21T15:25:01Z (GMT). No. of bitstreams: 1 Madalossi_NatiaraVaughn_M.pdf: 3988977 bytes, checksum: 5fd028b4052bd1c0173b1e06a840ab1b (MD5) Previous issue date: 2012<br>Resumo: Este trabalho reporta a síntese e caracterização de nanoestruturas de ZnO com morfologia de nanobastões hexagonais, crescidas verticalmente ao substrato de silício. Para o crescimento vertical dos nanobastões foi depositado um filme constituído por grãos

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20

Tisseraud, Céline. "Origine et impact de la synergie Cu-ZnO sur l'hydrogénation catalytique du CO2 en méthanol." Thesis, Poitiers, 2016. http://www.theses.fr/2016POIT2295/document.

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L’hydrogénation catalytique du CO2 est considérée comme l’une des voies de valorisation les plus prometteuses pour la production du méthanol. Cette synthèse, souvent accompagné par une formation de CO, a fait l’objet de nombreuses études dans la littérature. Cependant, les résultats obtenus sur des catalyseurs à base de Cu et de ZnO ont démontré que cette réaction n’est pas aussi simple qu’elle y paraissait. Il y a encore beaucoup de controverses et d’interrogations sur la nature des sites actifs et sur les différentes étapes réactionnelles mises en jeu lors de la réaction. L’objectif de ce tr

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21

Hagelin, Alexander. "ZnO nanoparticles : synthesis of Ga-doped ZnO, oxygen gas sensing and quantum chemical investigation." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-64730.

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Doped ZnO nanoparticles were synthesized by three different methods – electrochemical deposition under oxidizing conditions (EDOC) , combustion method and wet chemical synthesis – for investigating the oxygen gas sensing response. Ga-doped ZnO was mostly synthesized but also In-doped ZnO was made. The samples were analyzed by XRD, SEM, EDX and TEM. Gas response curves are given alongside with Langmuir fitted curves and data for pure ZnO and Ga-doped ZnO. DFT quantum chemical investigation of cluster models ZnO nanoparticles were performed to evaluate defect effects and oxygen and nitrogen diox

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22

Silva, Douglas Carlos de Sousa. "Síntese e caracterização de heteroestruturas de Ag2MoO4 e ZnO e investigação da sinergia nas propriedades fotocatalíticas e fotoluminescentes." Universidade Federal de Goiás, 2017. http://repositorio.bc.ufg.br/tede/handle/tede/7260.

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Submitted by JÚLIO HEBER SILVA (julioheber@yahoo.com.br) on 2017-05-03T20:30:01Z No. of bitstreams: 2 Dissertação - Douglas Carlos de Sousa Silva - 2017.pdf: 3036182 bytes, checksum: c02aa9da97c239bf3b1954923b5ee8a0 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)<br>Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2017-05-04T11:06:57Z (GMT) No. of bitstreams: 2 Dissertação - Douglas Carlos de Sousa Silva - 2017.pdf: 3036182 bytes, checksum: c02aa9da97c239bf3b1954923b5ee8a0 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8

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23

Zhang, Miao. "Defects in ZnO nanoparticles obtained by gas-phase syntheses." Thesis, Paris 6, 2017. http://www.theses.fr/2017PA066259.

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L’attribution des signatures spectrales liées aux défauts dans l’oxyde de zinc fait encore l’objet de controverses. Ceci est probablement dû à la grande variété de défauts possibles, à l’incertitude de leur niveau d’énergie ainsi que leur énergie de formation dans la bande interdite. De plus, l’imprécision concernant les conditions de mesures et la possible présence d’impuretés inhérentes à certaines méthodes de synthèse peuvent souvent mener à des interprétations erronées. Le but de ce travail de thèse est donc d’identifier les défauts intrinsèques naturellement présents dans du ZnO fraîcheme

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24

Demes, Thomas. "Croissance, assemblage et intégration collective de nanofils de ZnO : application à la biodétection." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAI008/document.

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Les réseaux bidimensionnels de nanofils (NFs) d’oxyde de zinc (ZnO) aléatoirement orientés, ou nanonets (pour « nanowire networks »), constituent des nanostructures innovantes et prometteuses pour de nombreuses applications. L’objectif de cette thèse est de développer des nanonets de ZnO en vue d’applications à la détection de molécules biologiques ou gazeuses, en particulier de l’ADN, ceci selon une procédure bas coût et industrialisable. Dans ce but, il est essentiel de bien maitriser les différentes étapes d’élaboration qui sont : (i) le dépôt de couches minces de germination de ZnO sur des

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25

Ilin, Evgeniy. "Study of the synthesis machanisms and optical properties of ZnO nanomaterials obtained by supercritical fluids route." Thesis, Bordeaux, 2014. http://www.theses.fr/2014BORD0236/document.

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L'oxyde de zinc (ZnO) est un matériau connu et intensivement étudié pour des applications optoélectroniques dans le domaine de l’ultraviolet en raison de son large gap énergétique (3,34 eV). Cependant, les applications UV basées sur des matériaux nanostructurés représentent un véritable défi : la diminution en taille des particules obtenues généralement par des voie de chimie en solution permet d’accroître la surface spécifique mais en stabilisant des défauts à l’origine d’émissions visibles. Au cours des dernières décennies, des progrès concernant la qualité des particules ont été enregistrés

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26

Bekhti, Widad. "Synthèse par voie hydrothermale et caractérisation des micro/nanostructures d’Oxyde de Zinc." Thesis, Lyon 1, 2015. http://www.theses.fr/2015LYO10015.

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L'oxyde de zinc (ZnO) est un matériau semi-conducteur qui présente des caractéristiques très intéressantes telles que : un gap directe à 3.3 eV à température ambiante, une forte énergie excitonique (60 meV à température ambiante) associé à un caractère piézoélectrique. Ces propriétés permettent de considérer le ZnO parmi les nanomatériaux prometteurs, dans une grande variété d'applications : dans le domaine de l'optoélectronique, de l'énergie photovoltaïque ou de l'environnement. Pour que ces dispositifs deviennent exploitables à l'échelle industrielle, certaines conditions doivent être satisf

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27

Abdelli, Marwen. "Élaboration et caractérisations des cellules photovoltaïques organiques nano-architecturées." Thesis, Université Grenoble Alpes, 2020. http://www.theses.fr/2020GRALI040.

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La recherche dans le domaine du photovoltaïque connait une évolution importante grâce au développement de nouveau matériaux/concepts. Dans le cadre de cette thèse, nous avons proposé de réaliser des cellules solaires à architecture proche la structure interpénétrée idéale combinant un réseau de nanofils de ZnO synthétisés « sur mesure » et une couche active organique à base d’une hétérojonction D/A en volume. La compréhension des mécanismes de croissance des nanofils de ZnO et la maitrise de la synthèse ont abouti à un protocole expérimentale optimal permettant une fabrication reproductible de

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28

Buchine, Brent Alan. "Acoustics in nanotechnology: manipulation, device application and modeling." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/26542.

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Thesis (Ph.D)--Materials Science and Engineering, Georgia Institute of Technology, 2008.<br>Committee Chair: Wang, Zhong Lin; Committee Member: Degertekin, F. Levent; Committee Member: Liu, Meilin; Committee Member: Snyder, Robert L.; Committee Member: Tannenbaum, Rina. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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Poosimma, Poonsuk. "Stability of zinc oxide varistors." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/stability-of-zinc-oxide-varistors(1986b8ad-9f20-4317-9dd0-2b459bbd6c89).html.

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Ceramic varistors based on ZnO, Bi2O3, Sb2O3, MnO and Co3O4 were prepared by the mixed oxide route. After milling the powders, disc shaped samples were pressed and sintered for 2 hours at temperatures in the range 950°C to 1250°C. Products were characterised in terms of phase development and microstructure by X-ray diffraction and scanning electron microscopy; electrical characterisation included current-voltage (I-V), capacitance-voltage (C-V) and degradation behaviour. Most varistors contained a three phase microstructure comprising ZnO grains (3–54 μm in size), a Bi-rich grain boundary phas

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Leung, Yu-hang. "Fabrication and characterization of zinc oxide (ZnO) nanostructures." Click to view the E-thesis via HKUTO, 2006. http://sunzi.lib.hku.hk/hkuto/record/B36175328.

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Leung, Yu-hang, and 梁宇恆. "Fabrication and characterization of zinc oxide (ZnO) nanostructures." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B36175328.

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ABOU, MRAD CHAFIC. "Synthese du methanol et d'alcools superieurs sur catalyseurs cuo-zno modifies." Université Louis Pasteur (Strasbourg) (1971-2008), 1987. http://www.theses.fr/1987STR13200.

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Mise au point sur la synthese du methanol en presence de cuo-zno et mise en evidence de l'influence du pretraitement et de l'effet benefique des promoteurs(cao,tho::(2),al::(2)o::(3), zro::(2),bao et sro)

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Clavijo, William. "Nanowire Zinc Oxide MOSFET Pressure Sensor." VCU Scholars Compass, 2014. http://scholarscompass.vcu.edu/etd/625.

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Fabrication and characterization of a new kind of pressure sensor using self-assembly Zinc Oxide (ZnO) nanowires on top of the gate of a Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) is presented. Self-assembly ZnO nanowires were fabricated with a diameter of 80 nm and 800 nm height (80:8 aspect ratio) on top of the gate of the MOSFET. The sensor showed a 110% response in the drain current due to pressure, even with the expected piezoresistive response of the silicon device removed from the measurement. The pressure sensor was fabricated through low temperature bottom up ultrahig

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Lennox, Martin. "Synthesis of zinc / zinc oxide nanoparticle-carbon nanotube composites." Thesis, McGill University, 2014. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=121192.

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This thesis presents a novel process for the synthesis of zinc/zinc oxide nanoparticle-carbon nanotube composites. The process combines aerosol flow condensation for the synthesis of nanoparticles with a radio-frequency glow discharge in order to facilitate the deposition of these nanoparticles on nanostructured surfaces consisting of carbon nanotubes grown directly on stainless steel substrates. The design, construction and optimization of the process is described. A maximum observed nanoparticle deposition rate of 500 nm/min was observed when layers of nanoparticles were deposited on silicon

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Wang, Zilan, and 王子蘭. "Defect emission of ZnO and its related origins." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/211111.

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Zinc oxide (ZnO) is a promising material for ultra-violet optoelectronics applications due to its direct band gap and large exciton binding energy. Defect in semiconductor plays an important role in determining the optical and electrical properties. It is thus crucial to understand the defects‟ performance for realizing the device fabrication. Green luminescence (GL) having the peak at 2.4-2.5 eV is a defect related emission band commonly found in the luminescence spectra of many of the ZnO materials. Despite of the effort devoted for several decades, its origin and emission mechanism remai

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Xiao, Bin, and 肖斌. "Photoluminescence study of ZnO materials." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hub.hku.hk/bib/B47153593.

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　Zinc oxide (ZnO) is a wide band gap (3.4eV at 300K) II-VI semiconductor with an exciton binding energy up to 60meV and is promising in the realization of excitonic or polaritonic lasing effect. Photoluminescence is widely used in studying the band gap and defect levels of ZnO. However, understanding in defects of ZnO is still far from satisfaction and remains controversial. Different authors suggest different explanations and mechanisms. 　In the present study we investigate in the photoluminescence spectra of four kinds of ZnO single crystal, namely as-grown (not implanted) Zn-face polished

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Hensler, Martin Josef Hermann. "Optoelectrical studies of ZnO." Thesis, University of Canterbury. Physics and Astronomy, 2009. http://hdl.handle.net/10092/6004.

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The temperature dependence of the band structure of ZnO has been studied on epitaxial films and bulk crystals with the methods of temperature dependent photoluminescence, photoconductivity, reflectivity and transmission spectroscopy. A major question investigated was the intriguing detail that could be resolved in band edge photoconductivity spectra of both high quality ZnO bulk crystals as well as epitaxial films. The connection of these spectral details in photoconductivity to the excitonic band structure of ZnO was made by comparison to the other spectroscopic methods which have a bette

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Shi, Shenlei. "Exciton related optical properties of ZnO." Click to view the E-thesis via HKUTO, 2006. http://sunzi.lib.hku.hk/hkuto/record/B38284881.

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Abedi, Khaledi Navid. "Chemical recognition and reactivity of zinc-oxide surfaces." Doctoral thesis, Humboldt-Universität zu Berlin, 2021. http://dx.doi.org/10.18452/21516.

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ZnO hat wegen seiner potenziellen Anwendung in elektronischen Geräten und als Katalysator viel Aufmerksamkeit erhalten. Die Struktur und Reaktivität von ZnO-Oberflächen haben eine direkte Bedeutung für die Leistung und Funktionalität dieser Geräte. Daher ist die Definition und das Verständnis der atomistischen Details von ZnO-Oberflächenstrukturen von besonderer Bedeutung. Die atomistischen Details von ZnO-Oberflächen hängen von den Präparationsverfahren ab. Nach der Kristallpräparation ist es notwendig, eine Oberflächencharakterisierung durchzuführen, um eine Verbesserung der Funktionalität

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Cheng, Chun. "Fabrication and characterization of one dimensional ZnO nanostructures /." View abstract or full-text, 2009. http://library.ust.hk/cgi/db/thesis.pl?NSNT%202009%20CHENG.

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Muley, Amol. "Synthesis and characterization of nanostructured metallic zinc and zinc oxide." Thesis, Click to view the E-thesis via HKUTO, 2007. http://sunzi.lib.hku.hk/hkuto/record/B39101538.

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Adhikari, Naresh. "Defects and Optoelectronic properties of Zinc oxide." Bowling Green State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1562770832047501.

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Pung, Swee Yong. "Synthesis and characterization of zinc oxide nanowires." Thesis, University of Nottingham, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.555414.

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A rapid expansion in research work on zinc oxide nanowires (ZnO NWs) has been observed in recent years. The unique properties of wide bandgap and large exciton binding energy make ZnO NW s suitable for a wide range of devices, such as transistors, photodetectors, light-emitting diodes and laser diodes that operate in the blue and ultraviolet region of the spectrum. Currently, the principal development of ZnO NWs is focused on the gold (Au) catalyst and heteroepitaxial approach. However, the presence of Au may generate undesired deep level traps in the ZnO bandgap, which can be very harmful to

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Hansson, (f d. Wadeasa) Amal. "Heterojunctions between zinc oxide nanostructures and organic semiconductor." Doctoral thesis, Linköpings universitet, Fysik och elektroteknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-71843.

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Lighting is a big business, lighting consumes considerable amount of the electricity. These facts motivate for the search of new illumination technologies that are efficient. Semiconductor light emitting diodes (LEDs) have huge potential to replace the traditional primary incandescent lighting sources. They are two basic types of semiconductor LEDs being explored: inorganic and organic semiconductor light emitting diodes. While electroluminescence from p-n junctions was discovered more than a century ago, it is only from the 1960s that their development has accelerated as indicated by an expon

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Shortell, Matthew P. "Zinc oxide quantum dot nanostructures." Thesis, Queensland University of Technology, 2014. https://eprints.qut.edu.au/76335/4/Matthew_Shortell_Thesis.pdf.

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Zinc oxide (ZnO) is one of the most intensely studied wide band gap semiconductors due to its many desirable properties. This project established new techniques for investigating the hydrodynamic properties of ZnO nanoparticles, their assembly into useful photonic structures, and their multiphoton absorption coefficients for excitation with visible or infrared light rather than ultraviolet light. The methods developed are also applicable to a wide range of nanoparticle samples.

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Ali, Arshid Mahmood. "Characterisation of semi-conductor zinc oxide (ZnO) thin films as photocatalysts." Thesis, University of Auckland, 2011. http://hdl.handle.net/2292/7203.

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The objective of this project was to study the suitability of nanostructured ZnO thin films as efficient photocatalysts and to characterise any issues that may be involved in the scale-up of photocatalytic systems based on these types of immobilised nanostructure ZnO thin films. In particular, this study involved fabricating and then evaluating the effectiveness of a range of nanostructured zinc oxide (ZnO) thin films with different structures and chemistries (i.e. undoped and doped) as photocatalysts, and thereafter to systematically relate: the initial and reacted surface morphology; p

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El, Zein Basma. "Growth and characterization of zinc oxide (ZnO) nanostructures for photovotaic applications." Thesis, Lille 1, 2012. http://www.theses.fr/2012LIL10141/document.

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Le développement des nanotechnologies offre de nouvelles perspectives pour la conception des cellules solaire à fort rendement de conversion. Jusqu’à présent les efforts se sont portés principalement sur des structures à base de semi-conducteurs, de métaux et de polymères. Dans nos travaux, nous avons considéré des nanoparticules de Sulfure de Plomb (PbS) pour lesquelles l'énergie de bande interdite et les propriétés optiques sont fonction de la taille de la particule afin de tirer parti de l'ensemble du spectre optique couvert par l'énergie solaire. Nous avons également considéré des nanofils

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Dai, Xuemin, and 戴學敏. "Experimental and theoretical studies of defects related emissions in ZnO crystals." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B4163388X.

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Dai, Xuemin. "Experimental and theoretical studies of defects related emissions in ZnO crystals." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B4163388X.

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Chen, Yuk-nga, and 陳玉雅. "Ion implantation induced color emissions in ZnO." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2010. http://hub.hku.hk/bib/B44679099.

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