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Dissertations / Theses on the topic 'Spectroscopic sensitizer'

Author: Grafiati

Published: 7 June 2025

Last updated: 2 August 2025

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1

Singh, Rohit. "Modulated orientation sensitive terahertz spectroscopy." Thesis, State University of New York at Buffalo, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=3565883.

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<p> The energies of protein correlated motions lie in the far infrared or THz frequency range (λ = 1 cm – 50 mm, f = 0.03 – 6 THz). The existence of correlated motions has been confirmed by neutron and inelastic x-ray scattering measurements. These techniques require large sample volumes and specialized facilities, limiting their application to systematic studies of changes in correlated motions with functional state and allosteric interactions. Standard terahertz time domain spectroscopy measurements have shown sensitivity to protein-ligand binding, oxidation state, conform

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2

Ruslen, Leah M. (Leah Marie) 1973. "Application of sensitive spectroscopic techniques to intramolecular dynamics and combustion kinetics." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/8361.

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Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 2002.<br>Vita.<br>Includes bibliographical references.<br>Modifications of Cavity Ringdown Spectroscopy (CRD) for use in the UV region are discussed. These modifications partially overcome the low sensitivity of CRD in the UV (due to lower mirror reflectivity, R - 0.99) by removal of non-exponential contributions to the ringdown decay. We have also developed a novel fitting algorithm to accurately extract the ringdown decay time from the ringdown signal. The resulting sensitivity is comparable to that achieved in the vi

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3

Westermark, Karin. "Dye/Semiconductor Interfaces : An Electron Spectroscopic Study of Systems for Solar Cell and Display Applications." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2001. http://publications.uu.se/theses/91-554-5055-5/.

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4

Andersson, Henrik. "Position Sensitive Detectors : Device Technology and Applications in Spectroscopy." Doctoral thesis, Mittuniversitetet, Institutionen för informationsteknologi och medier, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-202.

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This thesis deals with the development, processing and characterization of position sensitive detectors and, in addition, to the development of compact and cost effective spectrometers. Position sensitive detectors are used to measure, with great accuracy and speed, the position of a light spot incident on the surface. Their main use is for triangulation, displacement and vibration measurements. A type of position sensitive detector based on the MOS principle and using optically transparent indium tin oxide as a gate contact has been developed. This type of detector utilizes the MOS principle

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5

Monk, Stephen David. "Ultra sensitive detection of hydrocarbons using wavelength modulation spectroscopy." Thesis, University of Glasgow, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.422654.

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6

Xu, Jingyue. "Sensitive and mutiplexed microRNA quantification using amplified time-gated Förster resonance energy transfer." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASS137.

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En tant que biomarqueurs de nouvelle génération, les microARNs sont associés à de nombreux cancers et maladies, ce qui a conduit à une forte demande pour le développement de méthodes cliniques de diagnostic des microARNs. Les technologies d'amplification isotherme, telles que l'amplification en cercle roulant et l'assemblage catalytique en épingle à cheveux, sont devenues des méthodes puissantes pour les dosages très rapides, spécifiques et sensibles des microARNs. Cette thèse se concentre sur le développement de biocapteurs de microARNs basés sur les technologies d'amplification isotherme et

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7

Ho, Sut Kam. "Highly sensitive elemental analysis of ArF laser excited atomic fluorescence of laser plumes." HKBU Institutional Repository, 2007. http://repository.hkbu.edu.hk/etd_ra/765.

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8

Lopez, Mirna Maritza. "Sensitive absorption-based laser wave-mixing spectroscopic methods in microsystems for biomedical applications /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2004. http://wwwlib.umi.com/cr/ucsd/fullcit?p3144304.

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9

Hahlin, Maria. "Electronic and Molecular Surface Structures of Dye-Sensitized TiO2 Interfaces." Doctoral thesis, Uppsala universitet, Yt- och gränsskiktsvetenskap, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-127166.

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The dye-sensitized solar cell is a promising solar cell technology. In these systems the key process for light to electricity conversion is molecular in nature and is initiated in dye molecules adsorbed at a semiconducting surface. This thesis focuses on the electronic and molecular surface structure of the dye/TiO2 interface, and the experimental results were obtained from surface sensitive X-ray based electron spectroscopic methods. Two families of dyes, triarylamine based organic dyes and ruthenium based inorganic dyes, were investigated. The effect of dye structural modications on the inte

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10

Koethe, Thomas Christoph. "Bulk sensitive photoelectron spectroscopy of strongly correlated transition metal oxides." [S.l.] : [s.n.], 2006. http://deposit.ddb.de/cgi-bin/dokserv?idn=982912900.

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11

Menmuir, Sheena. "Visible spectroscopy as a sensitive diagnostic tool for fusion plasmas." Licentiate thesis, KTH, Physics, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-572.

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<p>To further the understanding and knowledge about fusion plasmas and their behaviour during different conditions, it is important to be able to collect information about the plasma and the processes occurring within it. Visible spectroscopy, or the study of the visible wavelength light emitted by the plasma, is a useful tool in this search for knowledge.</p><p>This thesis is based on experiments where visible wavelength light has been measured and analysed in order to determine quantities about the emitting source. Doppler shift measurements of spectral lines have been utilised to determine

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12

Adato, Ronen. "Mid-infrared plasmonics for ultra-sensitive spectroscopy of biomolecular interactions." Thesis, Boston University, 2013. https://hdl.handle.net/2144/12705.

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Thesis (Ph.D.)--Boston University PLEASE NOTE: Boston University Libraries did not receive an Authorization To Manage form for this thesis or dissertation. It is therefore not openly accessible, though it may be available by request. If you are the author or principal advisor of this work and would like to request open access for it, please contact us at open-help@bu.edu. Thank you.<br>Mid-infrared (IR) absorption spectroscopy contrasts with numerous other biosensing methods in that it can directly probe molecular structure via bond specific vibrational modes and monitor structural changes ev

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13

Ruiz, Raga Sonia. "Advanced Studies on Dye-Sensitized Solar Cells." Doctoral thesis, Universitat Jaume I, 2013. http://hdl.handle.net/10803/396360.

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The conversion of sunlight into electricity is one of the most promising energy sources because is renewable and available worldwide. Therefore, is desirable to develop low cost, stable and efficient photovoltaic devices that can compete with the expensive silicon solar panels. Dye-sensitized solar cells (DSC) are a promising photovoltaic technology based on low-cost materials and fabrication processes with power-conversion efficiencies over 12%. DSC harvest light thanks to a photoactive organic molecule, and extracts the charges through different materials. The analysis of the working princip

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14

Kaufmann, Eriksson Susanna. "Interfaces in Dye-Sensitized Solar Cells Studied with Photoelectron Spectroscopy at Elevated Pressures." Doctoral thesis, Uppsala universitet, Fysikalisk kemi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-230855.

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With an increasing demand for renewable energy sources, research efforts on different solar cell technologies are increasing rapidly. The dye-sensitized solar cell (DSC) is one such technology, taking advantage of light absorption in dye molecules. The liquid based DSC contains several interesting and important interfaces, crucial for the understanding and development of the solar cell performance. Examples of such interfaces include dye-semiconductor, electrode-electrolyte and solute-solvent interfaces. Ultimately, complete interfaces with all these components included are of particular inter

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15

Oscarsson, Johan. "Towards Mixed Molecular Layers for Dye-Sensitized Solar Cells : A Photoelectron Spectroscopy Study." Doctoral thesis, Uppsala universitet, Molekyl- och kondenserade materiens fysik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-301164.

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The increasing demand for renewable energy has led to substantial research on different solar cell technologies. The dye-sensitized solar cell (DSC) is a technology utilizing dye molecules for light absorption. Dye molecules are adsorbed to a mesoporous semiconductor surface and after light absorption in the dye, charge separation occurs at this interface. Traditionally, DSCs have used layers of single dye species, but in recent efforts to enhance power conversion efficiency, more complex molecular layers have been designed to increase the light absorption. For example, the most efficient DSCs

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16

Rastogi, Rishabh. "Engineered Electromagnetic Hot-spots for Highly Sensitive (Bio)molecular Detection by Plasmonic Specytroscopies." Thesis, Troyes, 2020. http://www.theses.fr/2020TROY0018.

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La détection nanoplasmonique repose sur des champs électromagnétiques exaltés à proximité de la surface des métaux nanostructurés pour détecter les molécules à des concentrations ultra-faibles. Les exaltations de champ sont fortement prononcées aux jonctions entre les nanostructures adjacentes, ce qui entraîne des points chauds. Les exaltations de champ en ces points chauds augmentent de façon non linéaire en fonction des distances jusqu’au régime inférieur à 10nm. Les analytes présents à ces lacunes peuvent tirer parti de ces exaltations de champ, résultant en une sensibilité ultra-élevée dan

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17

Syed, Azfar A. "Surface enhanced Raman spectroscopy for ultra-sensitive detection of energetic materials." Thesis, Cranfield University, 2010. http://dspace.lib.cranfield.ac.uk/handle/1826/4644.

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The prospect of ultra-sensitive detection of molecular species, particularly those of energetic materials, has prompted the present research initiative. The combination of metal surface nano-technology and Raman spectroscopy has given rise to ‘Surface Enhanced Raman Spectroscopy’ (SERS). This is a very sensitive technique and has proved to be capable of detecting a single molecule. SERS was demonstrated by recording Raman spectra of the sample molecules adsorbed on various specially prepared SER-active surfaces both in the form of a colloidal suspension and on the solid roughened surfaces. Usi

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18

Newman, Stuart Michael. "Electronic spectroscopy of molecules of atmospheric interest using sensitive absorption techniques." Thesis, University of Bristol, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322613.

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19

Alexander, Jessica Anne. "High-Resolution Electron Energy-Loss Spectroscopy of Beam-Sensitive Functional Materials." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1531309653616002.

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Syed, A. A. "Surface enhanced raman spectroscopy for ultra-sensitive detection of energetic materials." Thesis, Department of Materials and Applied Science, 2010. http://dspace.lib.cranfield.ac.uk/handle/1826/4644.

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The prospect of ultra-sensitive detection of molecular species, particularly those of energetic materials, has prompted the present research initiative. The combination of metal surface nano-technology and Raman spectroscopy has given rise to ‘Surface Enhanced Raman Spectroscopy’ (SERS). This is a very sensitive technique and has proved to be capable of detecting a single molecule. SERS was demonstrated by recording Raman spectra of the sample molecules adsorbed on various specially prepared SER-active surfaces both in the form of a colloidal suspension and on the solid roughened surfaces. Usi

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21

Johansson, Erik. "Interfaces in Dye-Sensitized Oxide / Hole-Conductor Heterojunctions for Solar Cell Applications." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Universitetsbiblioteket [distributör], 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-6892.

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22

Patterson, Claire Siobhan. "Portable spectroscopy system for ultra-sensitive, real-time measurement of breath ethane." Thesis, University of Glasgow, 2009. http://theses.gla.ac.uk/538/.

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This thesis describes the development, characterisation and application of a portable spectroscopy system for ultra-sensitive, real-time detection of breath ethane. In healthcare, breath ethane is a widely accepted marker of free radical-induced cell damage and may be used to indicate changes in oxidative stress. The aim was to deliver a compact instrument capable of long-term, on-site use in a clinical environment, while also retaining the high performance previously achieved by lab-based systems at the University of Glasgow. The newly developed instrument has a sensitivity of 70 parts per tr

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23

Dubinsky, Ilia A. (Ilia Alexander) 1968. "Application of highly sensitive spectroscopic techniques to the study of intramolecular dynamics and remote sensing." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/10021.

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24

Lyons, Wendy Jean. "Sensitive multi-photon nonlinear laser spectroscopic methods for isotope analysis in atmospheric and environmental applications." Diss., [La Jolla] : [San Diego] : University of California, San Diego ; San Diego State University, 2009. http://wwwlib.umi.com/cr/ucsd/fullcit?p3356293.

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Thesis (Ph. D.)--University of California, San Diego and San Diego State University, 2009.<br>Title from first page of PDF file (viewed July 2, 2009). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references.

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25

Hoshikawa, Toyohisa. "Evaluation of charge transfers and photoelectrochemical properties of dye-sensitized solar cells by impedance spectroscopy." 京都大学 (Kyoto University), 2006. http://hdl.handle.net/2433/144022.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(工学)<br>甲第12336号<br>工博第2665号<br>新制||工||1376(附属図書館)<br>24172<br>UT51-2006-J328<br>京都大学大学院工学研究科物質エネルギー化学専攻<br>(主査)教授江口浩一, 教授垣内隆, 助教授井上正志<br>学位規則第4条第1項該当

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Gustafsson, Håkan. "Development of sensitive EPR dosimetry methods /." Linköping : Linköping University, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-11099.

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Peic, Antun. "Mesoporous thin-film materials studied by optical waveguide spectroscopy." Thesis, University of Bath, 2009. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.518293.

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A method was developed to access the interior of light-guiding structures in order to exploit the enhanced sensing potential of the highly confined electromagnetic field distributions, located within the core of a waveguide. The work presented in this thesis explores therefore the possibilities of optical waveguide spectroscopy utilising transparent mesoporous thin-film waveguides deposited on top of athin gold layer. These multi-layer assemblies are employed in a prism-coupling attenuated total internal reflection (ATR) configuration. The angular read-out of the reflected light intensity allo

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28

Stevens, Derrick. "Molecular Dynamics in Self-assembled Monolayers and Polymers studied via sensitive Dielectric Spectroscopy." NCSU, 2009. http://www.lib.ncsu.edu/theses/available/etd-07052009-111325/.

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For many molecular systems, interpreting experimental molecular dynamics, by studying the response of a system to external stimuli, is a difficult task. Often the experimental response cannot be reasonably connected to a specific molecular motion. The aim of this work is to examine molecular systems where this difficulty can be overcome. We use sensitive dielectric spectroscopy to investigate the molecular dynamics of two different systems, chlorosilane self-assymbled monolayers and modified siloxane polymers. The polymers studied responded to changes in their surrounding media by altering the

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29

Zhang, Lei. "Exploring Electron Transfer Dynamics of Novel Dye Sensitized Photocathodes : Towards Solar Cells and Solar Fuels." Doctoral thesis, Uppsala universitet, Fysikalisk kemi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-302263.

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The design of dyes for NiO-based dye-sensitized solar cells (DSSCs) has drawn attention owing to their potential applications in photocatalysis and because they are indispensable for the development of tandem dye-sensitized solar cells. The understanding of the electron transfer mechanisms and dynamics is beneficial to guide further dye design and further improve the performance of photocathode in solar cells and solar fuel devices. Time-resolved spectroscopy techniques, especially femtosecond and nanosecond transient absorption spectroscopy, supply sufficient resolution to get insights into t

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Pöttinger, Leo [Verfasser], and Thomas [Akademischer Betreuer] Bürgi. "Spectroscopic characterization of dye sensitized TiO₂ with CO₂ co-adsorption and visible light excitation / Leo Pöttinger ; Betreuer: Thomas Bürgi." Heidelberg : Universitätsbibliothek Heidelberg, 2014. http://d-nb.info/1177810808/34.

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Xu, Lei. "Development and application of ultra-sensitive fluorescence spectroscopy and microscopy for biomolecular interaction studies." Doctoral thesis, KTH, Experimentell biomolekylär fysik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-146181.

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This thesis describes the development of sensitive and high-resolution fluorescence spectroscopic and microscopic techniques and their application to probe biomolecules and their interactions in solution, lipid membrane model systems and in cells. Paper I-IV are largely focused on methodological developments. In paper I, a new fluorescence method based on fluorescence correlation spectroscopy (FCS) for detecting single particles was realized, requiring no fluorescent labeling of the particles. The method can yield information both about the diffusion properties of the particles as well as abou

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Das, Santanu. "Carbon Nanostructure Based Electrodes for High Efficiency Dye Sensitize Solar Cell." FIU Digital Commons, 2012. http://digitalcommons.fiu.edu/etd/678.

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Synthesis and functionalization of large-area graphene and its structural, electrical and electrochemical properties has been investigated. First, the graphene films, grown by thermal chemical vapor deposition (CVD), contain three to five atomic layers of graphene, as confirmed by Raman spectroscopy and high-resolution transmission electron microscopy. Furthermore, the graphene film is treated with CF4 reactive-ion plasma to dope fluorine ions into graphene lattice as confirmed by X-ray photoelectron spectroscopy (XPS) and UV-photoemission spectroscopy (UPS). Electrochemical characterization r

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33

SACCO, ADRIANO. "Novel Dye-sensitized Solar Cell architecture based on microfluidic housing system." Doctoral thesis, Politecnico di Torino, 2013. http://hdl.handle.net/11583/2506378.

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The present work is focused on the design, fabrication and characterization of a novel dye-sensitized solar cell architecture exploiting some microfluidic concepts. By using this innovative approach, it became possible to fabricate small laboratory test-cells with a high degree of assembly reproducibility, and develop some interesting applications, like the analysis of the cell components over time, without compromising the cell integrity. The proposed architecture has been used in the experimental test of some innovative materials. The study is of experimental nature and supported by di

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Kusumawati, Yuly. "Oxide and composite electron transport layers for efficient dye-sensitized solar cells." Thesis, Paris 6, 2015. http://www.theses.fr/2015PA066240/document.

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Trois types des ETLs ont été développés et étudiés dans cette travaille comme une photoélectrode dans la cellule solaire à colorant (DSSC). Ils sont composés de (1) deux types de nanoparticules de TiO2-brookite, (2) le composite d'anatase et graphène et (3) la nanoparticule de ZnO qui a nanobâtonnet structure, respectivement. Toutes photoélectrodes sont préparées par le technique « doctor blade ». La morphologie des photoélectrodes ont été caractérisées par microscopie électronique à transmission (MET) et microscopie électronique à balayage (MEB). Les épaisseurs de couche sont mesurées en util

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Yu, Lihong, and 于利红. "Electron transfer study for selected dye sensitized solar cell and polymer solar cell by time-resolved spectroscopy." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/206455.

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The pure organic dye sensitized solar cells (DSSCs) were studied and a new organic dye of donor-π-2acceptors (D-π-2A configuration) was fabricated. This dye, denoted as B2, was investigated and applied in DSSCs. Density functional theory (DFT) was used to examine the electronic distribution of the frontier orbitals of the B2 dye. It was found that intramolecular charge transfer (ICT) between the donor moieties and acceptor moieties of the B2 dye may take place under photo irradiation. The LUMO, LUMO+1 and LUMO+2 of B2 are all distributed on the acceptor moieties and this is very helpful to enh

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England, Katharine E. R. "Electron energy-loss spectroscopy of diatomic and triatomic gases using a position sensitive multidetector." Thesis, University of Manchester, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328293.

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Beukes, Stewart Eva-Panduleni. "EPR studies of electron transfer in cadmium selenide sensitised titania." Thesis, University of Aberdeen, 2016. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=232399.

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Research into renewable energy sources is crucially increasing to counteract the ever more concerning impact of non-renewable sources. Theoretically, Quantum Dot Solar Cells (QDSCs) can achieve much greater efficiencies than current, commercial solar cells, but its expansion is still in its very early stages of scientific study and development. In this project TiO2, one of the most efficient and cost-effective photocatalysts, is coupled with Cadmium Selenide (CdSe) Quantum Dots (QD) in a study of interfacial charge transfers. Thus far, in other studies, CdSe QDs have shown some of the most pro

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Mickadeit, Fritz Karl Matthew. "Sensitive doppler-free high-resolution spectroscopy based on laser wave mixing for hyperfine structure analysis and trace-concentration detection /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2001. http://wwwlib.umi.com/cr/ucsd/fullcit?p9993990.

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Jijana, Abongile Nwabisa. "Quantum dot sensitized estrogen receptor alpha-recombinant protein electrochemical biosensor for 17-beta estradiol." Thesis, University of the Western Cape, 2016. http://hdl.handle.net/11394/5330.

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Philosophiae Doctor - PhD<br>Estrogens play an extraordinary role in the endocrine system regulation through the stimulation and regulation of endocrine pathways. 17β-estradiol is one of the final metabolites in estrogen regulation by hydroxylase enzymes that are well recognized for their metabolic role in hormone fragmentation and dissociation, through hydroxylation reactions that reversibly convert a series of androgens to estrogens (i.e. or one estrogen to the other). However, the 17β-estradiol hormone has been classified as one of the estrogenic endocrine disrupting compounds {i.e. EDC (s)

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Knott, Andrew N. "3D printing of light trapping structures for dye-sensitised solar cells." Thesis, University of Nottingham, 2018. http://eprints.nottingham.ac.uk/50058/.

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Converting solar energy directly into electricity as a clean and renewable energy resource is immensely important to solve the energy crisis and environmental pollution problems induced by the consumption of fossil fuels. Dye-sensitised solar cells have attracted a great deal of attention following their development in 1991. They provide a technically and economically credible alternative that could challenge the dominance of conventional p-n junction photovoltaic devices in the solar energy market. 3D printing and other additive manufacturing techniques allow the fabrication of geometrically

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Gong, Yun. "Structure-property relationships of dyes as applied to dye-sensitized solar cells." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/275007.

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This work investigates the correlation of structural and photovoltaic properties of dyes used in dye-sensitized solar cells. Experimental methods, including ultraviolet-visible spectroscopy, fluorescence spectroscopy, cyclic voltammetry and electrochemical impedance spectroscopy are employed to study optical and electrochemical properties of dye molecules. Computational methods, including density functional theory and time-dependent density functional theory, are used to validate and predict the optical and electronic properties of dye molecules, in their isolated state and once embedded into

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Atherton, Adrian Ashley. "Nonlinear wave-mixing spectroscopic methods for bioanalytical and biophysical applications with sensitive detection at the single cell level." Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2006. http://wwwlib.umi.com/cr/ucsd/fullcit?p3230037.

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Thesis (Ph. D.)--University of California, San Diego and San Diego State University, 2006.<br>Title from first page of PDF file (viewed November 17, 2006). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references.

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Knittle, James Eugene. "Bioanalytical and photophysical applications of sensitive nonlinear wave-mixing spectroscopy based on laser-induced gratings /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2004. http://wwwlib.umi.com/cr/ucsd/fullcit?p3138952.

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Gutmann, Sebastian. "Electronic Structure Characterization of Nanocrystalline Surfaces and Interfaces with Photoemission Spectroscopy." Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/3137.

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In this study, photoemission spectroscopy (PES) was used to investigate the electronic properties of nanocrystalline titanium dioxide (TiO2), zinc oxide (ZnO), and cadmium selenide (CdSe). Electrospray deposition technique enabled the preparation of thin films in vacuum from a dispersion prepared outside the vacuum chamber. This method also allowed the step-wise formation of interfaces and the monitoring of the evolution of the electronic structure with intermittent PES characterization. The work function of nanocrystalline TiO2 and ZnO was measured with ultraviolet photoemission spectroscopy

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Lane, Paul David. "Nanoscale surface modification studied by reflection anisotropy spectroscopy." Thesis, University of Edinburgh, 2009. http://hdl.handle.net/1842/5660.

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The development and control of nanoscale properties is a major goal in science and technology; for the development of such technologies it is important that there are experimental techniques which allow the monitoring of development processes in real time and in a range of environments. With this in mind much effort has been invested in the development of surface sensitive optical probes. One such technique, reflection anisotropy spectroscopy (RAS), has been applied successfully to a number of different problems since its development in the mid 1980’s. RAS as a surface specific technique is ve

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Cummings, Beth L. "Applications of infrared laser spectroscopy to breath analysis." Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:5b6e0624-5982-457c-b13c-61484bace371.

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The work presented in this thesis is concerned with development of spectroscopic detection methods based on absorption spectroscopy using semiconductor lasers, with particular ref- erence to the ﬁeld of medical diagnostics through breath analysis. The ﬁrst part of this thesis deals with the design and testing of a prototype analyser for simultaneous monitoring of the exchange gases O<sub>2</sub> , CO<sub>2</sub> and H<sub>2</sub>O in breath. The aim of this analyser is to provide information required to monitor respiration, with potential use in intensive care monitoring or during anaesthesia.

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Tiwana, Priti. "Ultrafast charge dynamics in mesoporous materials used in dye-sensitized solar cells." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:ba3cbbce-3119-4043-a499-c0ca74287d42.

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This thesis is concerned with measuring ultrafast electron dynamics taking place in dye-sensitized mesoporous semiconductor films employed as working electrodes in dye-sensitized solar cells (DSCs). An understanding of these ultrafast charge transfer mechanisms is essential for designing efficient photovoltaic (PV) devices with high photon-to-current conversion efficiency. Optical-pump terahertz-probe (OPTP) spectroscopy is a sub-picosecond resolution, non-contact, photoconductivity measurement technique which can be used to directly measure charge carrier dynamics within nanostructured materi

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48

Josefsson, Ida. "Ab initio simulations of core level spectra : Towards an atomistic understanding of the dye-sensitized solar cell." Licentiate thesis, Stockholms universitet, Fysikum, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-93098.

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The main focus of this thesis is ab initio modeling of core level spectra with a high-level quantum chemical description both of the chemical interactions and of local atomic multiplet effects. In particular, the combination of calculations and synchrotron-based core-level spectroscopy aims at understanding the local structure of the electronic valence in transition metal complexes, and the details of the solvation mechanisms of electrolyte solutions, systems relevant for the dye-sensitized solar cell. Configurational sampling in solution is included through molecular dynamics simulations. Tra

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49

Pettersson, Rimgard Belinda. "Interligand Electron Transfer Dynamics in Ruthenium Polypyridyl Complexes for Dye Sensitized Solar Cells Determined with Femtosecond Transient IR Absorption Anisotropy." Thesis, Uppsala universitet, Fysikalisk kemi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-347571.

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Interligand electron transfer (ILET) may be an essential parameter for the injection ofan electron from the dye into the semiconductor surface of a dye sensitized solar cell(DSSC). Without an eﬃcient injection, competing recombination paths may become apparent. For the future development and design of DSSCs, with the hope of increased energy conversion eﬃciencies, the ILET dynamics is of great importance. For a long time, the most impressive DSSCs were sensitized with polypyridyl ruthenium dyes for which injection has shown to vary from sub-ps to ns duration. It may therefore be crucial to ﬁnd

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50

Sasaki, K., and K. Takizawa. "Sensitive measurement of electric field in a collisionless dc sheath by laser-induced fluorescence-dip spectroscopy." IEEE, 2003. http://hdl.handle.net/2237/6862.

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