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Relevant bibliographies by topics / Zinc oxide. Nanostructured materials. Photoluminescence / Dissertations / Theses

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Dissertations / Theses on the topic 'Zinc oxide. Nanostructured materials. Photoluminescence'

Author: Grafiati

Published: 4 June 2021

Last updated: 18 February 2022

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1

Feng, Lin. "Photoluminescence studies of single zinc oxide nanostructures /." View abstract or full-text, 2010. http://library.ust.hk/cgi/db/thesis.pl?PHYS%202010%20FENG.

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2

Jiao, Mingzhi. "Microfabricated Gas Sensors Based on Hydrothermally Grown 1-D ZnO Nanostructures." Doctoral thesis, Uppsala universitet, Mikrosystemteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-320183.

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In this thesis, gas sensors based on on-chip hydrothermally grown 1-D zinc oxide (ZnO) nanostructures are presented, to improve the sensitivity, selectivity, and stability of the gas sensors. Metal-oxide-semiconductor (MOS) gas sensors are well-established tools for the monitoring of air quality indoors and outdoors. In recent years, the use of 1-D metal oxide nanostructures for sensing toxic gases, such as nitrogen dioxide, ammonia, and hydrogen, has gained significant attention. However, low-dimensional nanorod (NR) gas sensors can be enhanced further. Most works synthesize the NRs first and

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3

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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4

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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5

Smith, Nathan. "Characterisation of zinc oxide nanostructures." Thesis, Swansea University, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.678399.

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6

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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7

Hlaing, Oo Win Maw. "Infrared spectroscopy of zinc oxide and magnesium nanostructures." Online access for everyone, 2007. http://www.dissertations.wsu.edu/Dissertations/Fall2007/w_hlaingoo_121107.pdf.

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8

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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9

Wang, Jinfeng. "Characterization and synthesis of nanoscale materials." Diss., Rolla, Mo. : Missouri University of Science and Technology, 2008. http://scholarsmine.mst.edu/thesis/pdf/JinfengWang_09007dcc80564540.pdf.

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Thesis (Ph. D.)--Missouri University of Science and Technology and University of Missouri--St. Louis, 2008.<br>Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed August 28, 2008) Thesis completed as part of a cooperative degree program with Missouri University of Science & Technology and the University of Missouri--St. Louis. Includes bibliographical references (p. 129-142).

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10

Ding, Lu. "Optical and magneto-optical studies of crystalline and nano-structured zinc oxide /." View abstract or full-text, 2007. http://library.ust.hk/cgi/db/thesis.pl?PHYS%202007%20LU.

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11

Xiao, Zhizhao. "Optical properties of zinc oxide nanostructure materials using near-field scanning optical microscopy /." View abstract or full-text, 2007. http://library.ust.hk/cgi/db/thesis.pl?PHYS%202007%20XIAO.

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12

Dai, Haixia. "Engineering nanomaterials with a combined electrochemical and molecular biomimetic approach /." Thesis, Connect to this title online; UW restricted, 2005. http://hdl.handle.net/1773/9868.

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13

Shi, Jian. "Horizontal zinc oxide nanomaterials growth and their application for surface enhanced raman scattering." Diss., Columbia, Mo. : University of Missouri-Columbia, 2008. http://hdl.handle.net/10355/6682.

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Thesis (M.S.)--University of Missouri-Columbia, 2008.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on August 19, 2009) Includes bibliographical references.

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14

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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15

Huang, Xuezhen. "Fabrication and optical properties of (I) erbium-doped nanowires containing germanium and/or zinc oxide and (II) porous germanium nanowires." [Fort Worth, Tex.] : Texas Christian University, 2010. http://etd.tcu.edu/etdfiles/available/etd-04282010-134727/unrestricted/Huang.pdf.

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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

Giatti, Brandon. "Optical Properties of Nanostructured Dielectric Coatings." PDXScholar, 2014. https://pdxscholar.library.pdx.edu/open_access_etds/1940.

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Solar cells have extrinsic losses from a variety of sources which can be minimized by optimization of the design and fabrication processes. Reflection from the front surface is one such loss mechanism and has been managed in the past with the usage of planar antireflection coatings. While effective, these coatings are each limited to a single wavelength of light and do not account for varying incident angles of the incoming light source. Three-dimensional nanostructures have shown the ability to inhibit reflection for differing wavelengths and angles of incidence. Nanocones were modeled and sh

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18

Johnson, Clint Edwin. "In vitro toxicity assessment of silver and zinc oxide nanoparticles." University of Western Australia. School of Biomedical, Biomolecular and Chemical Sciences, 2010. http://theses.library.uwa.edu.au/adt-WU2010.0119.

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Nanotoxicology is a nascent field of study concerned with the potential for nanotechnology to adversely impact human health or result in ecological damage. Nanomaterials can display unique physicochemical properties not present in the parent bulk material and it is these properties that may be a potential source of toxicity. There are a growing number of examples of nanomaterials functioning differently in biosystems compared to the parent bulk material. With the rapid growth of nanotechnology and increasing exposure of people to novel nanomaterials there is an urgent need to evaluate the toxi

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19

Zhang, Shaolin, and 張少林. "Wide band gap nanomaterials and their applications." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B41758225.

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20

Weintraub, Benjamin A. "One-dimensional zinc oxide nanomaterials synthesis and photovoltaic applications." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/34727.

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As humanly engineered materials systems approach the atomic scale, top-down manufacturing approaches breakdown and following nature's example, bottom-up or self-assembly methods have the potential to emerge as the dominant paradigm. Synthesis of one-dimensional nanomaterials takes advantage of such self-assembly manufacturing techniques, but until now most efforts have relied on high temperature vapor phase schemes which are limited in scalability and compatibility with organic materials. The solution-phase approach is an attractive low temperature alternative to overcome these shortcomings.

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21

Mojekwu, Nneoma. "The Role of Crystallographic Texture in Achieving Low Friction Zinc Oxide Nanolaminate Films." Thesis, University of North Texas, 2015. https://digital.library.unt.edu/ark:/67531/metadc822792/.

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Metal oxide nanolaminate films are potential high temperature solid lubricants due to their ability to exhibit significant plasticity when grain size is reduced to the nanometer scale, and defective growth structure is achieved by condensation of oxygen vacancies to form intrinsic stacking faults. This is in contrast to conventional microcrystalline and single crystal oxides that exhibit brittle fracture during loading in a sliding contact. This study emphasizes the additional effect of growth orientation, in particular crystallographic texture, on determining the sliding friction behavior i

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22

Urgessa, Zelalem Nigussa. "Growth and characterization of ZnO nanorods using chemical bath deposition." Thesis, Nelson Mandela Metropolitan University, 2012. http://hdl.handle.net/10948/d1021124.

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Semiconductor devices are commonplace in every household. One application of semiconductors in particular, namely solid state lighting technology, is destined for a bright future. To this end, ZnO nanostructures have gained substantial interest in the research community, in part because of its requisite large direct band gap. Furthermore, the stability of the exciton (binding energy 60 meV) in this material, can lead to lasing action based on exciton recombination and possibly exciton interaction, even above room temperature. Therefore, it is very important to realize controllable growth of Zn

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23

Zhang, Shaolin. "Wide band gap nanomaterials and their applications." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B41758225.

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24

Saluja, Amandeep S. "A parametric study of gas sensing response of ZnO nanostructures and carbon nanotubes /." Online version of thesis, 2009. http://hdl.handle.net/1850/11388.

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25

Bergman, Kathryn N. "Biomineralization of inorganic nanostructures using protein surfaces." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/22674.

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Thesis (M. S.)--Materials Science and Engineering, Georgia Institute of Technology, 2008.<br>Committee Chair: Tsukruk, Vladimir; Committee Member: Kalaitzidou, Kyriaki; Committee Member: Valeria Milam.

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26

Lambert, Darcy Erin. "Nanostructured Extremely Thin Absorber (ETA) Hybrid Solar Cell Fabrication, Optimization, and Characterization." PDXScholar, 2011. https://pdxscholar.library.pdx.edu/open_access_etds/637.

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Traditional sources of electrical energy are finite and can produce significant pollution. Solar cells produce clean energy from incident sunlight, and will be an important part of our energy future. A new nanostructured extremely thin absorber solar cell with 0.98% power conversion efficiency and maximum external quantum efficiency of 61% at 650 nm has been fabricated and characterized. This solar cell is composed of a fluorine-doped tin oxide base layer, n-type aluminum doped zinc oxide nanowires, a cadmium selenide absorber layer, poly(3-hexylthiophene) as a p-type layer, and thermally evap

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27

Chou, Tammy Ping-Chun. "Effects of the nanostructure and the chemistry of various oxide electrodes on the overall performance of dye-sensitized solar cells /." Thesis, Connect to this title online; UW restricted, 2006. http://hdl.handle.net/1773/10580.

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28

Chen, Xinyi, and 陈辛夷. "Wide band-gap nanostructure based devices." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B49799290.

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Wide band gap based nanostructures have being attracting much research interest because of their promise for application in optoelectronic devices. Among those wide band gap semiconductors, gallium nitride (GaN) and zinc oxide (ZnO) are the most commonly studied and optoelectronic devices based on GaN and ZnO have been widely investigated. This thesis concentrates on the growth, optical and electrical properties of GaN and ZnO nanostructures, plus their application in solar cells and light emitting diodes (LEDs). GaN-nanowire based dye sensitized solar cells were studied. Different post-grow

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29

Kulkarni, Ambarish J. "Atomistic Characterization and Continuum Modeling of Novel Thermomechanical Behaviors of Zinc Oxide Nanostructures." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/19761.

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ZnO nanowires and nanorods are a new class of one-dimensional nanomaterials with a wide range of applications in NEMS. The motivation for this work stems from the lack of understanding and characterization of their thermomechanical behaviors essential for their incorporation in nanosystems. The overall goal of this work is to develop a fundamental understanding of the mechanisms controlling the responses of these nanostructures with focus on: (1) development of a molecular dynamics based framework for analyzing thermomechanical behaviors, (2) characterization of the thermal and mechanical beha

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30

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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31

Catto, Ariadne Cristina. "Síntese e caracterização de filmes finos e espessos de ZnO: aplicação como sensores de gás." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/18/18158/tde-21032017-152552/.

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O desenvolvimento de novos materiais que possam ser aplicados como sensores resistivos de gás torna-se mais importante a cada dia devido sua importância no monitoramento ambiental, controle de emissão industrial e aplicações médicas. Desta forma, esforços têm sido realizados a fim de desenvolver dispositivos funcionais que apresentem uma alta sensibilidade, seletividade e baixo consumo de energia operando em temperaturas próximas a temperatura ambiente. O composto ZnO nanoestruturado puro e/ou dopado exibindo diferentes morfologias têm sido apontado como um candidato promissor na detecção de d

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32

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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33

Allan, Shawn Michael. "Reactive replacement and addition of cations in bioclastic silica and calcite." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/19239.

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Thesis (M. S.)--Materials Science and Engineering, Georgia Institute of Technology, 2005.<br>Committee Chair: Kenneth Sandhage; Committee Members: Joe Cochran, Robert Snyder and Tom Sanders. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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34

Mendelsberg, Rueben. "Photoluminescence of ZnO grown by eclipse pulsed laser deposition : a thesis submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Physics in the University of Canterbury /." 2009. http://hdl.handle.net/10092/3052.

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35

Kabongo, Guy Leba. "Luminescence investigation of zinc oxide nanoparticles doped with rare earth ions." Diss., 2013. http://hdl.handle.net/10500/14191.

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Un-doped, Tb3+ as well as Yb3+ doped ZnO nanocrystals with different concentrations of RE3+ (Tb3+, Yb3+) ions were successfully synthesized via sol-gel method to produce rare earth activated zinc oxide nanophosphors. The phosphor powders were produced by drying the precursor gels at 200˚C in ambient air. Based on the X-ray diffraction results, it was found that the pure and RE3+ doped ZnO nanophosphors were highly polycrystalline in nature regardless of the incorporation of Tb3+ or Yb3+ ions. Moreover, the diffraction patterns were all indexed to the ZnO Hexagonal wurtzite structure and belon

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36

"Size-controllable growth of ZnO nanorod arrays and their surface modifications =: ZnO納米柱陣列可控生長與表面修飾". Thesis, 2010. http://library.cuhk.edu.hk/record=b6074912.

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At last, a thermal evaporation method that modifies the surface of ZnO nanorods and forms core shell structure is developed, which structure constitutes the photoelectrode for solar energy application. Single crystal ZnO nanorods are uniformly covered by wurtzite polycrystalline CdxZn1-x SySe1-y layer. The band gap of the shell can be systematically tuned from 2.5 to 1.7 eV by varying its composition, as suggested by the optical extinction measured of the samples. The type II band alignment between the ZnO core and the alloy shell enables effective photo-generated charge carrier separation, an

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37

Kinadjian, Natacha Monique Frédérique. "Integrative Chemistry based morphosyntheses of hierarchical composite materials for photovoltaic, photocatalysis and photoluminescence applications." Thesis, 2014. http://hdl.handle.net/10012/8374.

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The shaping of functional materials and the control of their texture at all length scales are sine qua non conditions for the improvement of current systems. This PhD project consists in creating complex solid architectures using interdisciplinary methods such as sol-gel chemistry or complex fluids physics. Therefore, it is possible to synthesize Titanium Dioxide macroscopic fibers or films which possess a hierarchical porosity. This organization allows the optimization of the matter transport (liquid/gaz) for air depollution application (photocatalysis) or dye-sensitized solar cells. In anot

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38

Ivaturi, Sameera. "Electron Filed Emission Studies of Nanostructured Carbon Materials." Thesis, 2012. http://hdl.handle.net/2005/3251.

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Field emission is the emission of electrons from a solid under an intense electric field, of the order of 109 V/m. Emission occurs by the quantum mechanical tunneling of electrons through a potential barrier to vacuum. Field emission sources offer several attractive features such as instantaneous response to field variation, resistance to temperature fluctuation and radiation, a high degree of focusing ability in electron optics, good on/off ratio, ballistic transport, and a nonlinear current-voltage relationship. Carbon nanotubes (CNTs) are potential candidates as field emitters since they p

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39

Rajachidambaram, Meena Suhanya. "Investigation of oxide semiconductor based thin films : deposition, characterization, functionalization, and electronic applications." Thesis, 2011. http://hdl.handle.net/1957/26524.

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Nanostructured ZnO films were obtained via thermal oxidation of thin films formed with metallic Zn-nanoparticle dispersions. Commercial zinc nanoparticles used for this work were characterized by microscopic and thermal analysis methods to analyze the Zn-ZnO core shell structure, surface morphology and oxidation characteristics. These dispersions were spin-coated on SiO₂/Si substrates and then annealed in air between 100 and 600 °C. Significant nanostructural changes were observed for the resulting films, particularly those from larger Zn nanoparticles. These nanostructures, including nanoneed

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