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Relevant bibliographies by topics / Solar spectroscopy / Dissertations / Theses

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Dissertations / Theses on the topic 'Solar spectroscopy'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Fuhrer, Markus Franz. "Electroluminescence Spectroscopy of Quantum Well Solar Cells." Thesis, Imperial College London, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.516978.

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2

Del, Zanna Giulio. "Extreme ultraviolet spectroscopy of the solar corona." Thesis, University of Central Lancashire, 1999. http://clok.uclan.ac.uk/7916/.

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New Extreme Ultra-Violet (EUV) observations of the solar corona, obtained by the Coronal Diagnostic Spectrometer (CDS) instrument on board the NASA/ESA Solar and Heliospheric Observatory (SOHO) are presented. The CDS instrument for the first time has provided the opportunity of observing a large number of emission lines from a wide range of ions of different elements. The spectral and spatial resolution of the CDS instrument has allowed the simultaneous application of a wide range of spectroscopic diagnostic techniques to determine the temperature distribution, densities and elemental abundanc

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3

Mulay, Sargam. "EUV spectroscopy of solar active region jets." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/277700.

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The million degree temperature of the solar corona has been a continuing puzzle to scientists. A detailed study of energetic events such as solar flares, coronal mass ejection and solar jets may provide important clues about how changes in the magnetic activity lead to explosive eruptions in the corona and contribute to coronal heating. In this thesis, the author has studied solar jets, ubiquitous energetic transients observed in the solar atmosphere. They have been observed to originate from the edge of active regions and show signatures in different layers of the solar atmosphere. A systemat

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4

Young, Peter Rousselange. "EUV spectroscopy of solar and stellar atmospheres." Thesis, University of Cambridge, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.624911.

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5

Rainnie, J. A. "X-ray spectroscopy of tokamak and solar plasmas." Thesis, Queen's University Belfast, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.396222.

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6

Anil, Kumar R. "Measurement Of Solar Cell AC Parameters Using Impedance Spectroscopy." Thesis, Indian Institute of Science, 2000. http://hdl.handle.net/2005/203.

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Photovoltaic (PV) conversion of solar energy appears to be one of the most promising ways of meeting the increasing future energy demand. In space, photovoltaic power source is the only alternative. The demand for higher power has necessitated the use of high speed switching charge controller and power conditioner. To design an efficient and reliable switching charge controller, the static (I-V) and dynamic (AC) characteristics of a solar cell need to be understood. The AC parameters of a solar cell can be measured either by Frequency Domain technique or by Time Domain technique. In frequency

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7

Doerr, Hans-Peter [Verfasser], and Wolfgang [Akademischer Betreuer] Schmidt. "Precision spectroscopy with a frequency-comb-calibrated solar spectrograph." Freiburg : Universität, 2016. http://d-nb.info/1120020719/34.

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8

Mertens, Verena. "Capacitance spectroscopy on copper indium diselenide based solar cells." [S.l.] : [s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=981450784.

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9

Graham, David Robert. "Extreme ultraviolet spectroscopy of impulsive phase solar flare footpoints." Thesis, University of Glasgow, 2014. http://theses.gla.ac.uk/5017/.

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This thesis is primarily concerned with the atmospheric structure of footpoints during the impulsive phase of a solar flare. Through spectroscopic diagnostics in Extreme- Ultraviolet wavelengths we have made significant progress in understanding the depth of flare heating within the atmosphere, and the energy transport processes within the footpoint. Chapter 1. introduces the Sun and its outer atmosphere, forming the necessary background to understand the mechanisms behind a solar flare and their observational characteristics. The standard flare model is presented which explains the energy sou

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10

Dhital, Bharat. "Single-molecule interfacial electron transfer dynamics in solar energy conversion." Bowling Green State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1477997482545831.

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11

Nakagawa, Akinari. "Methodological advances in ultraviolet spectroscopy of the extended solar corona." 京都大学 (Kyoto University), 2007. http://hdl.handle.net/2433/136954.

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12

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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13

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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14

Liudi-Mulyo, Andreas. "Characterisation of quantum dot-intermediate band solar cells with optical spectroscopy." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for fysikk, 2013. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-23616.

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This report describes the development of a photoreflectance (PR) technique in order to study InAs/GaAs quantum dots-based intermediate band solar cells (QD-IBSC). The motivation for this study, is that PR has previously been applied to detect the optical transitions involving the intermediate band as well as the excited states of the quantum dots (QDs). Such excited states are detrimental for the QD-IBSC performance, and they are not readily detected by photoluminescence (PL).The PR signals show several unique peaks for all samples, related to their properties. The Franz-Keldysh oscillations (

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15

Álvarez, García Jacobo. "Characterisation of CuInS2 Films for Solar Cell Applications by Raman Spectroscopy." Doctoral thesis, Universitat de Barcelona, 2002. http://hdl.handle.net/10803/1505.

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CuInS2 is a good candidate as photovoltaic absorber for the fabrication of high efficient and low cost solar cells. In this work, the vibrational properties of CuInS2 films have been studied by means of Raman Spectroscopy, and other techniques such as XRD, TED, SEM and AES. Moreover, the CuInS2 absorber films used for the fabrication of solar cell devices have been characterised, and the sulphurisation reaction of the metallic precursors for the preparation of baseline absorbers investigated. Epitaxial and polycrystalline films were grown by a coevaporation process in a vacuum chamber containi

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16

Burtone, Lorenzo. "Electrical Characterization of Organic Devices and Solar Cells by Impedance Spectroscopy." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-146467.

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In this work, the capacitive response of organic electronic devices is analysed. Particular attention is given to small-molecule organic solar cells, with the purpose of deriving an equivalent circuit for the small-signal response of these devices. The different components characterising the solar cells electrical response are individuated and discussed and a specific physical meaning is associated with each element of the equivalent circuit. In the experimental section, the capacitive elements of the equivalent circuit are characterised by analysing organic diodes and solar cells. It is fou

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17

Fox, James Lewis. "Snapshot imaging spectroscopy of the solar transition region: the multi-order solar EUV spectograph (MOSES) sounding rocket mission." Diss., Montana State University, 2011. http://etd.lib.montana.edu/etd/2011/fox/FoxJ0511.pdf.

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We have developed a revolutionary spectroscopic technique for solar research in the extreme ultraviolet. This slitless spectrographic technique allows snapshot imaging spectroscopy with data exactly cotemporal and cospectral. I have contributed to the successful realization of an application of this technique in the Multi-Order Solar EUV Spectrograph, MOSES. This instrument launched 2006 Feb 8 as a NASA sounding rocket payload and successfully returned remarkable data of the solar transition region in the He II 304 Angstrom spectral line. The unique design of this spectrometer allows the study

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18

Telleschi, Alessandra Silvia. "Coronal evolution of solar-like stars : X-ray spectroscopy of stars in star-forming regions and the solar neighborhood /." Zürich : ETH, 2007. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17018.

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19

Tei, Akiko. "Spectroscopic Studies of the Dynamic Solar Chromosphere: Spicules and Flares." Kyoto University, 2020. http://hdl.handle.net/2433/253089.

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20

Henrich, Joseph David. "ULTRAFAST ELECTRON TRANSFER IN BIOMIMETIC SOLAR ENERGY CONVERSION ARCHITECTURES." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1284958760.

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21

Khoele, Joshua Relebogile. "Deposition and structural properties of silicon carbide thin films for solar cell applications." University of the Western Cape, 2014. http://hdl.handle.net/11394/4345.

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>Magister Scientiae - MSc<br>The growth of hydrogenated amorphous silicon carbide (a-SiC:H) thin films deposited by Hot- Wire Chemical Vapour Deposition (HWCVD) for solar cell applications has been studied. The films were characterized for structural properties using Fourier Transform Infrared Spectroscopy FTIR, Elastic Recoil Detection Analysis (ERDA), X-ray Diffraction (XRD), Transmission Electron Microscopy (TEM) and Raman Spectroscopy (RS). A low temperature of the substrate heater maintained at 280 °C was used in this thesis due to the demand of low-cost solar cells based on cheap substra

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22

Van, fraeyenhoven Paulien. "Comparing morphology in dip-coated and spin-coated polyfluorene:fullerene films." Thesis, Karlstads universitet, Institutionen för ingenjörs- och kemivetenskaper, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-42576.

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Unsustainable energy sources are running out and global warming is getting worse. Therefore the need for renewable energy sources is growing. Solar cells are a popular options used as an energy source. Most popular are the inorganic photovoltaic cells. With their high efficiency and long lifetime, they make a very good energy source. Unfortunately the costs for inorganic solar cells are rather high. Organic solar cells can make a good replacement for inorganic photovoltaic. They are easy to make, light and rather cheap. In this thesis, the morphology of a model system of the active layer of or

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23

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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24

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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25

Tainter, Gregory Demaray. "Spatially resolved charge transport and recombination in metal-halide perovskite films and solar cells." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/286026.

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Metal-halide perovskites show great promise as solution-processable semiconductors for efficient solar cells and LEDs. In particular, the diffusion range of photogenerated carriers is unexpectedly long and the luminescence yield is remarkably high. While much effort has been made to improve device performance, the barriers to improving charge transport and recombination properties remain unidentified. I first explore charge transport by investigating a back-contact architecture for measurement. In collaboration with the Snaith group at Oxford, we develop a new architecture to isolate charge ca

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26

Weisspfennig, Christian Thomas. "Investigation of charge-transfer dynamics in organic materials for solar cells." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:add81bd2-f953-44ed-b977-d3e15ea4c411.

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This thesis improves our understanding of the charge-transfer dynamics in organic materials employed in dye-sensitized and nanotube-thiophene solar cells. For the purpose of this work, a femtosecond transient absorption spectroscopy setup was built. Additionally, microsecond transient absorption spectroscopy was utilised to explore dynamics on a longer time-scale. In the first study, the dependence of dye regeneration and charge collection on the pore- filling fraction (PFF) in solid-state dye-sensitized solar cells (DSSCs) is investigated. It is shown that while complete hole transfer with PF

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27

Rale, Pierre. "Multi-transition solar cells with localised states." Thesis, Paris 6, 2015. http://www.theses.fr/2015PA066541/document.

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Ce travail s’intéresse aux cellules solaires multi-transitions. Deux semiconducteurs à niveaux subbandgap : un highly mismatched alloy, le GaAsPN, et un absorbeur à boites quantiques. Les états subbandgap permettent de modifier l’énergie de gap ou de créer une bande intermédiaire au milieu du gap. En premier lieu, une introduction de la cellule solaire par l’étude de luminescence est présentée. Des liens entre luminescence et propriétés électriques sont établis, et les limites thermodynamiques de l’efficacité des dispositifs multi-transitions sont explicitées. Enfin, une méthode optique de car

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28

Zambrana, Prado Natalia. "Spectroscopic diagnostics of the elemental composition of the solar corona." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASP063.

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Un des objectifs principaux de la mission Solar Orbiter est d'établir un lien entre l'activité à la surface du Soleil et l'évolution de la couronne et de l'héliosphère interne. Le satellite emporte à cette fin une combinaison unique d'instruments permettant de faire tant des mesures in situ du plasma héliosphérique que des observations à distance du Soleil. Ces mesures nous permettront par exemple de déterminer la région source du vent solaire mesuré in-situ au niveau du satellite. Un outil essentiel pour établir un tel lien sont les mesures de composition. En effet, différentes structures sol

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29

Walsh, Penelope Jane, and n/a. "Modelling and spectroscopy of polypyridyl and porphyrin complexes for electroluminescence and solar cell applications." University of Otago. Department of Chemistry, 2007. http://adt.otago.ac.nz./public/adt-NZDU20070927.151236.

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This thesis reports the spectroscopic and computational studies of two classes of compounds, which have applications in new optoelectronic materials technology. Substituted ligands of dipyrido-[3,2a:2�,3�c]phenazine (dppz), and their Cu(I), Re(I) and Ru(II) complexes have utility in organic electroluminescent devices. A series of Zn(II) tetraphenylporphyrins with conjugated functional groups at the β-position have been used with success in liquid heterojunction dye-sensitized solar cells. The vibrational spectra and optoelectronic properties of the two classes were investigated using Raman, re

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30

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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31

Duncan, Nicole. "Gamma-Ray Observations of Solar Flares with RHESSI Imaging Spectroscopy and the GRIPS instrument." Thesis, University of California, Berkeley, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10620536.

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<p> Solar flares can release ~1e33 ergs of power, accelerate particles to relativistic speeds, heat plasma to ~15 million K and catastrophically reorganize 1e5 km long field structures in 100s–1000s of seconds. Magnetic reconnection of large-scale field structures in the corona are thought to power flares, but the precise mechanisms that convert the stored magnetic energy into particle kinetic energy are poorly understood. </p><p> Flare spectra in the 20 keV–10 MeV energy range are rich with information that provide a window into the underlying physics of flare particle accelera

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32

Patrick, Christopher Edward. "Photoemission spectra of nanostructured solar cell interfaces from first principles." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:fa2333ea-7016-4d6f-8d55-aee4178482a6.

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Photovoltaic (PV) technologies could provide abundant, clean and secure energy through the conversion of sunlight into electricity, but currently are too expensive to compete with conventional sources of power. Novel PV devices incorporating nanostructured materials, such as the dye-sensitized solar cell (DSC), have been identified as viable, low-cost alternatives to traditional solar cell designs. In spite of technological progress in the field over the last twenty years, the underlying physics governing DSC operation is still not well understood. In this thesis, first-principles (i.e. parame

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33

Willis, Shawn M. "Advanced optoelectronic characterisation of solar cells." Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:07683f00-b7ba-4be3-aec0-f389fed34644.

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Optoelectronic characterisation techniques are assessed in their application to three solar cell systems. Charge injection barriers are found in PbS/ZnO colloidal quantum dot solar cells through the use of temperature dependent current-voltage and capacitance-voltage measurements. The injection barriers are shown to complicate the Mott-Schottky capacitance analysis which determines built-in bias and doping density. A model that incorporates depletion capacitance and a constant capacitance arising from the injection barriers is given to explain the Mott-Schottky plots. The junction mechanism at

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34

Brumboiu, Iulia Emilia. "Molecules and Light : A Journey into the World of Theoretical Spectroscopy." Doctoral thesis, Uppsala universitet, Institutionen för fysik och astronomi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-300123.

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Two of the main technological challenges of the century are the production of clean energy, on the one hand, and the development of new materials for electronic and spintronic applications that could increase the speed and the storage capacity of regular electronic devices, on the other hand. Organic materials, including fullerenes, organic polymers and organic molecules with metal centres are promising candidates for low-cost, flexible and clean technologies that can address these challenges. A thorough description of the electronic properties of such materials is, therefore, crucial. The int

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35

Jiménez, López Jesús. "Analysis of the Different Kinetic Processes in Perovskite Solar Cells." Doctoral thesis, Universitat Rovira i Virgili, 2019. http://hdl.handle.net/10803/668405.

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L'energia fotovoltaica s'ha convertit en una de les alternatives més populars com a font d'energia renovable. Es basa en la transformació directa de radiació solar en electricitat. Es troba disponible a escala global i a més no necessita de cap transformador per convertir l'energia mecànica en energia elèctrica, el que fa que sigui fàcil d'implementar. Avui en dia, el material més utilitzat per a aplicacions fotovoltaiques segueix sent el silici. En canvi, el desenvolupament de noves tecnologies, més barates, fàcils de processar i que a més poden utilitzar-se en substrats flexibles, ha sor

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36

Maslova, Olga. "Capacitance spectroscopy in hydrogenated amorphous silicon Schottky diodes and high efficiency silicon heterojunction solar cells." Phd thesis, Université Paris Sud - Paris XI, 2013. http://tel.archives-ouvertes.fr/tel-00922994.

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In this thesis, research on a-Si:H Schottky diodes and a-Si:H/c-Si heterojunctions is presented with the focus on the capacitance spectroscopy and information on electronic properties that can be derived from this technique. Last years a-Si:H/c-Si heterojunctions (HJ) have received growing attention as an approach which combines wafer and thin film technologies due to their low material consumption and low temperature processing. HJ solar cells benefit from lower fabrication temperatures thus reduced costs, possibilities of large-scale deposition, better temperature coefficient and lower silic

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37

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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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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Hansson, Henrik. "Understanding interfaces in thin-film solar cells using photo electron spectroscopy. : Effect of post-deposition treatment on composition of the solar cell absorber." Thesis, Uppsala universitet, Institutionen för fysik och astronomi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-399623.

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The increasing demand of renewable energy is the big driving force for the research and development of more efficient solar energy conversion solutions. Solar cells, which use the photovoltaic effect to convert the photon energy to electrical current, are an important solar energy conversion technique. One solar cell technology is thin-film solar cells. Thin-film solar cells use an absorption layer with a direct band gap. A direct band gap has the advantage that the photons will penetrate less deep until a photoexcitation occur compared to semiconductors with an indirect band gap (e.g. silicon

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40

Browning, Charles. "Diimine(dithiolate)platinum(ii) Chromophores: Synthesis, Spectroscopy, and Material Applications." Thesis, University of North Texas, 2014. https://digital.library.unt.edu/ark:/67531/metadc699877/.

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A series of 28 square-planar dithiol(diimine)platinum(II) chromophoric complexes have been synthesized, characterized, and evaluated for potential efficacy in sensitization of solid state photovoltaic devices to the near-infrared regions of the electromagnetic spectrum. The effect of molecular stacking in the solid state and self-association in solution are shown to influence spectral, electronic, and magnetic properties of the chromophores. Such properties are investigated in the pure form and as partners in donor-acceptor charge transfer adducts. Finally, selected chromophores have been inco

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41

Nawarange, Amruta V. "Optical Emission Spectroscopy during Sputter Deposition of CdTe Solar Cells and CuTe-Based Back Contacts." University of Toledo / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1321656598.

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42

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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Hettiarachchi, Chaminda Lakmal. "Organometal Halide Perovskite Solar Absorbers and Ferroelectric Nanocomposites for Harvesting Solar Energy." Scholar Commons, 2017. http://scholarcommons.usf.edu/etd/7034.

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Organometal halide perovskite absorbers such as methylammonium lead iodide chloride (CH3NH3PbI3-xClx), have emerged as an exciting new material family for photovoltaics due to its appealing features that include suitable direct bandgap with intense light absorbance, band gap tunability, ultra-fast charge carrier generation, slow electron-hole recombination rates, long electron and hole diffusion lengths, microsecond-long balanced carrier mobilities, and ambipolarity. The standard method of preparing CH3NH3PbI3-xClx perovskite precursors is a tedious process involvin

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van, den Brink Nemo. "Chemical abundances in main-sequence stars in open cluster M67." Thesis, Uppsala universitet, Teoretisk astrofysik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-169017.

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The discovery of a solar twin in the open star cluster M67 (Önehag et al. 2011) implies a near-solar chemical composition for the cluster. This study uses high-resolution spectroscopic data of five main-sequence stars in M67 to analyze their abundance of a few key elements and compare results to the solar-twin composition and the composition of field twins (Melendez et al. 2009). The derived composition was also compared to predictions of stellar-structure models including the effects of element diffusion. (Richard, private communication). It is found that all analyzed elements are, to varyi

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Tong, Qi. "The Influence of Surface Chemistry on the Photoelectrochemical Properties of FeS(2) Photoanodes." PDXScholar, 2015. https://pdxscholar.library.pdx.edu/open_access_etds/2482.

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The recurring theme of this dissertation is the correlation between FeS2 surface chemistry and key electrical and electronic properties of FeS2. Efforts have been made to identify and characterize the FeS2 surface, investigate the photoelectrochemistry of FeS2 photoanodes under anhydrous and anoxic conditions, and investigate the influence of deliberate surface chemistry on FeS2 photoelectrochemistry. Infrared reflection-absorption spectroscopy (IRRAS) was used to investigate a thin adsorbate layer on pyrite. The results showed that the combination of angle-dependent studies and computational

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Chadwick, Nina. "Exploring ruthenium dye synthesis and TiO2-dye-I-/I3- electron transfer reactions in a dye-sensitised solar cell." Thesis, University of Edinburgh, 2013. http://hdl.handle.net/1842/8845.

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Octahedral, six co-ordinate ruthenium complexes containing acid substituted polypyridyl ligands have proved particularly successful as dyes for Dye-Sensitised Solar Cells (DSSCs); thus there have been hundreds, if not thousands of these types of complexes synthesised and studied. Ruthenium dyes are now incorporated into commercial DSSCs; yet there is limited understanding of the interactions between the dye and the liquid I-/I3- electrolyte, which can both facilitate and hinder the generation of current and voltage within the cell. Monodentate –NCS ligands incorporated into ruthenium dyes appe

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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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Stammer, Peter, Kevin Wolf, André Ehrlich, and Manfred Wendisch. "Water vapor retrieval in the upper troposphere and lower stratosphere using airborne measurements of spectral solar irradiance." Universität Leipzig, 2018. https://ul.qucosa.de/id/qucosa%3A31797.

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Airborne measurements of the downward spectral solar irradiance were analyzed with differential optical absorption spectroscopy for the integrated water vapor (IWV) in the atmospheric column above the aircraft. The measurements are obtained from two campaigns in 2016, during which the High Altitude and Long Range Research Aircraft (HALO) took measurements of the downward solar irradiance within the upper troposphere and lower stratosphere (UTLS). The feasibility and limitations of the presented method are discussed for the dry conditions, which are typical for the high altitudes of the UTLS an

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Xiao, Yaowu Braiman Mark S. "Role of conserved arginine in solar energy conversion infrared spectroscopy of bacteriorhodopsin, proteorhodopsin, and model compounds /." Related electronic resource: Current Research at SU : database of SU dissertations, recent titles available full text, 2004. http://wwwlib.umi.com/cr/syr/main.

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Siebert-Henze, Ellen, Vadim G. Lyssenko, Janine Fischer, et al. "Built-in voltage of organic bulk heterojuction p-i-n solar cells measured by electroabsorption spectroscopy." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-147610.

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We investigate the influence of the built-in voltage on the performance of organic bulk heterojuction solar cells that are based on a p-i-n structure. Electrical doping in the hole and the electron transport layer allows to tune their work function and hence to adjust the built-in voltage: Changing the doping concentration from 0.5 to 32 wt% induces a shift of the work function towards the transport levels and increases the built-in voltage. To determine the built-in voltage, we use electroabsorption spectroscopy which is based on an evaluation of the spectra caused by a change in absorption d

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