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Dissertations / Theses on the topic 'Light trapping'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Raab, Eric Lowell. "Trapping sodium with light." Thesis, Massachusetts Institute of Technology, 1988. http://hdl.handle.net/1721.1/118103.

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2

Soleimani, Nazila. "Light trapping in fluorescent solar collectors." Thesis, University of Southampton, 2012. https://eprints.soton.ac.uk/348939/.

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A fluorescent solar collector (FSC) is an optoelectronic waveguide device that can concentrate both diffuse and direct sunlight onto a solar cell which is then converted to electricity. Fluorescent collectors offer the potential to reduce the cost of crystalline silicon (c-Si) solar cells, but so far their effectiveness has been demonstrated only theoretically. The major problems in the device obtaining high practical efficiency are photon transport losses and material instability. This aim of this research is to increase the fundamental understanding of photon transport losses in fluorescent

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3

Tvingstedt, Kristofer. "Light Trapping and Alternative Electrodes for Organic Photovoltaic Devices." Doctoral thesis, Linköpings universitet, Biomolekylär och Organisk Elektronik, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-17229.

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Organic materials, such as conjugated polymers, have emerged as a promising alternative for the production of inexpensive and flexible photovoltaic cells. As conjugated polymers are soluble, liquid based printing techniques enable production on large scale to a price much lower than that for inorganic based solar cells. Present day state of the art conjugated polymer photovoltaic cells are comprised by blends of a semiconducting polymer and a soluble derivative of fullerene molecules. Such bulk heterojunction solar cells now show power conversion efficiencies of up to 4-6%. The quantum efficie

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4

Clevenson, Hannah (Hannah Anne). "Sensing and timekeeping using a light-trapping diamond waveguide." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/111878.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2017.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 103-112).<br>Solid-state quantum systems have emerged as promising sensing platforms. In particular, the spin properties of nitrogen vacancy (NV) color centers in diamond make them outstanding sensors of magnetic fields, electric fields, and temperature under ambient conditions. This thesis focuses on spin-based sensing using multimode diamond waveguide structures to efficiently use large e

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5

Park, Yoonseok. "Light trapping substrates and electrodes for flexible organic photovoltaics." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-219686.

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Organic solar cells are one of the most promising candidates for future solar power generation. They are thin and lightweight with several additional advantages such as scalability, environmental sustainability and low cost for processing and installation. However, the low charge carrier mobility of the absorbing material for organic solar cells requires thin absorber layers, limiting photon harvesting and the overall power conversion efficiency. Several attempts, e.g., periodically patterned structures and scattering layers have been tried to enhance the absorption of thin-film solar cells as

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6

Banakar, Mehdi. "Sub-micron texturing for photovoltaic antireflection and light-trapping." Thesis, University of Southampton, 2015. https://eprints.soton.ac.uk/383004/.

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The photovoltaic solar energy industry has experienced substantial growth over the last few years and this growth has led to manufacturing cost reductions that have brought solar energy to grid parity in many parts of the world. Grid parity will inevitably lead to further expansions of the industry as uptake of the technology will no longer be subsidy driven. As the industry continues to mature, scientific and technological innovations that reduce the $/Watt cost of solar energy will allow companies to gain a competitive edge and increasingly ensure that solar energy can become affordable for

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7

Patella, Claudia. "Tecniche di light trapping per celle in silicio cristallino." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amslaurea.unibo.it/4048/.

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8

Branham, Matthew S. "Ultrathin crystalline silicon solar cells incorporating advanced light-trapping structures." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/97833.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2015.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 105-110).<br>Solar photovoltaics, which convert the energy potential of photons from the sun directly into electrical power, hold immense promise as a cornerstone of a clean energy future. Yet their cost remains greater than that of conventional energy sources in most markets and a barrier to large-scale adoption. Crystalline silicon modules, with a 90% share of the worldwide photovoltaic market, have witnessed

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9

Sesuraj, Rufina. "Plasmonic mirror for light-trapping in thin film solar cells." Thesis, University of Southampton, 2014. https://eprints.soton.ac.uk/366663/.

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Microcrystalline silicon solar cells require an enhanced absorption of photons in the near-bandgap region between 700-1150nm. Conventional textured mirrors scatter light and increase the path length of photons in the absorber by total internal reflection. However, these mirrors exhibit a high surface roughness which degrades the performance of the microcrystalline silicon device. An alternative solution is to use metal nanoparticles with low surface roughness to scatter light. An illuminated metal nanoparticle exhibits a resonant or plasmonic excitation which can be tuned to enable a strong sc

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10

Hsu, Chia Wei. "Novel Trapping and Scattering of Light in Resonant Nanophotonic Structures." Thesis, Harvard University, 2014. http://nrs.harvard.edu/urn-3:HUL.InstRepos:14226083.

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Nanophotonic structures provide unique ways to control light and alter its behaviors in ways not possible in macroscopic structures. In this thesis, we explore novel behaviors of light created by nanophotonic structures, with a common theme on resonance effects. The first half of the thesis focuses on a peculiar type of electromagnetic resonance, where the resonance lifetime diverges to infinity. These states, called bound states in the continuum, remain localized in space even though their frequency lie within a continuum of extended modes. We find such states in photonic crystal slabs and th

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11

Eisenlohr, Johannes [Verfasser]. "Light Trapping in High-Efficiency Crystalline Silicon Solar Cells / Johannes Eisenlohr." Konstanz : Bibliothek der Universität Konstanz, 2017. http://d-nb.info/1173087656/34.

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12

Jahns, Sophia [Verfasser], and Carla [Akademischer Betreuer] Cederbaum. "Trapping of light in stationary spacetimes / Sophia Jahns ; Betreuer: Carla Cederbaum." Tübingen : Universitätsbibliothek Tübingen, 2019. http://d-nb.info/119761088X/34.

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13

Zhou, Dayu. "Light-trapping enhancement in thin film solar cells with photonic crystals." [Ames, Iowa : Iowa State University], 2008.

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14

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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15

Powell, Alexander. "Engineering plasmonic light scattering with thin dielectric films : towards enhanced light trapping and novel sensing elements." Thesis, University of Oxford, 2015. https://ora.ox.ac.uk/objects/uuid:c18025ef-a693-441d-bd88-e37ebc09b6a5.

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Plasmonic research is becoming increasingly focused on the integration of noble metal nanostructures with planar devices to enhance their performance. Whilst the physics of noble metal nanoparticles at a simple interface is well studied, their behaviour inside a thin film structure is not. This work investigates the effect that placement in a thin dielectric film has on the excited modes and the directional scattering from various geometries of nanoparticle; the focus is on the fundamental principles but the application of this work in light trapping and nanoantenna design is also discussed. R

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16

Aardahl, Christopher L. "Electrodynamic trapping, manipulation, and Raman characterization of single particles and fine particulate clouds /." Thesis, Connect to this title online; UW restricted, 1997. http://hdl.handle.net/1773/9863.

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17

Ulbrich, Carolin [Verfasser]. "Spectral and directional dependence of light-trapping in solar cells / Carolin Ulbrich." Aachen : Hochschulbibliothek der Rheinisch-Westfälischen Technischen Hochschule Aachen, 2011. http://d-nb.info/1018190570/34.

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18

Udén, Jonathan. "Development of Light Transmission Techniques for Quantification ofCO2 Trapping in Porous Media." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-263012.

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Light transmission can be used to measure the amounts of certain constituents within a system by analyzing the amount of light they have absorbed. The aim of this study was to improve methods for light transmission measurements in two phase systems. In this study, the main reason is to be able to use light transmission for measurements of CO2-trapping in natural sandstone. The latter is something that does not exist today. The study investigated the possibility to use selected liquids that both represent an analogue CO2-brine system and have similar refractive index as each other to simplify B

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19

Braun, Felix Maximilian. "Modelling of light-trapping structures and their application in organic photovoltaic devices." Thesis, University College London (University of London), 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.437362.

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20

Susantyoko, Rahmat Agung. "Technological assessment of light-trapping technology for thin-film Si solar cell." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/54204.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2009.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student submitted PDF version of thesis.<br>Includes bibliographical references (p. 47-48).<br>The proposed light trapping technology of Distributed Bragg Reflector (DBR) with Diffraction Grating (DG) and Anti-Reflection Coating (ARC) for thin film Si solar cell was analyzed from the technology, market, and implementation p

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21

Rahman, Tasmiat. "Light trapping structures for photovoltaics using silicon nanowires and silicon micro-pyramids." Thesis, Imperial College London, 2015. http://hdl.handle.net/10044/1/31858.

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The current photovoltaic industry is dominated by crystalline or poly-crystalline Si in a planar pn-junction configuration. The use of silicon nanowire arrays (SiNWA) within this industry has shown great promise due to its application as an anti-reflective layer, as well as benefits in charge carrier extraction. In this work, we use a metal assisted chemical etch process to fabricate SiNWAs onto a dense periodic array of pyramids that are formed using an alkaline etch masked with an oxide layer. The hybrid micro-nano structure acts as an anti-reflective coating with experimental reflectivity b

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22

Massiot, Inès. "Design and fabrication of nanostructures for light-trapping in ultra-thin solar cells." Phd thesis, Université Paris Sud - Paris XI, 2013. http://tel.archives-ouvertes.fr/tel-00986262.

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Reducing the absorber thickness is an attractive solution to decrease the production cost of solar cells. Furthermore, it allows to reduce the amount of material needed and improve the current collection in the cell. This thesis has been focused on the design of nanostructures to enhance light absorption in very small semiconductor volumes in order to achieve efficient ultra-thin solar cells. First, we have proposed an original light-trapping concept for ultra-thin amorphous silicon (a-Si:H) solar cells. A one-dimensional metallic grating is patterned on the front surface of the cell deposited

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23

Ruggiero, Christopher W. "A ray tracing investigation of light trapping due to grooves in solar cells." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/40469.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2007.<br>Includes bibliographical references (leaf 21).<br>The biggest problem the world faces today is finding a renewable energy source as fossil fuel reserves being depleted, and the ongoing burning of fossil fuels is destroying environments all over the world. Solar energy is the most abundant energy source but is too expensive compete with non-renewable sources. A way to increase the efficiency of solar cells is to texture the cell surface so that it traps light better, allowing more light to be absorbe

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24

Benseny, Cases Albert. "Trapping and ionising atoms with light: wave and trajectory dynamics of quantum-optical processes." Doctoral thesis, Universitat Autònoma de Barcelona, 2013. http://hdl.handle.net/10803/129127.

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La mecànica quàntica va néixer a començaments del segle passat per a explicar fenòmens que els models de l'època no podien explicar. Des de llavors n'han aparegut diferents formalismes i interpretacions, cadascun amb les seves peculiaritats, que permeten proposar solucions diferents a alguns problemes quàntics o ajudar a descriure’n la dinàmica. Al mateix temps, l'estudi de la llum ha seguit de prop el desenvolupament de la teoria quàntica: des del seu inici amb la descripció que va fer Albert Einstein de l'efecte fotoelèctric fins al desenvolupament de les font de llum làser. De fet, la ll

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25

Schäfer, Sören [Verfasser]. "Development and analysis of novel light trapping schemes in silicon solar cells / Sören Schäfer." Hannover : Gottfried Wilhelm Leibniz Universität Hannover, 2018. http://d-nb.info/1172414475/34.

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26

Colin, Clément. "Metallic nano-structures for light-trapping in ultra-thin GaAs and CIGS solar cells." Phd thesis, Université Paris Sud - Paris XI, 2013. http://tel.archives-ouvertes.fr/tel-00998396.

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One of the natural tendencies of photovoltaic technologies is the systematic reduction of the thickness of the solar cells in order to reduce the cost, to save rare or toxic elements or to limit recombination. So far, crystalline thin-film (GaAs) and poly-crystalline (CIGS) technology are reaching optimum conversion efficiency for thicknesses around 1 or 2 microns. Typically, this thickness range does not require new solutions of optical trappings as it is the case for amorphous silicon. However, if we want to reduce these thicknesses by a factor of 10 or even 100 to study new concepts of coll

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27

Paetzold, Ulrich W. [Verfasser]. "Light trapping with plasmonic back contacts in thin-film Silicon solar cells / Ulrich Wilhelm Paetzold." Aachen : Hochschulbibliothek der Rheinisch-Westfälischen Technischen Hochschule Aachen, 2013. http://d-nb.info/103710661X/34.

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28

Zeng, Lirong Ph D. Massachusetts Institute of Technology. "High efficiency thin film silicon solar cells with novel light trapping : principle, design and processing." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/44392.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2008.<br>Includes bibliographical references.<br>One major efficiency limiting factor in thin film solar cells is weak absorption of long wavelength photons due to the limited optical path length imposed by the thin film thickness. This is especially severe in Si because of its indirect bandgap. This thesis invents a novel light trapping scheme, the textured photonic crystal (TPC) backside reflector, which can enhance path length by at least several hundred times the film thickness for sufficien

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29

Walsh, Jason L., and jason walsh@rmit edu au. "Development & evaluation of multiple optical trapping of colloidal particles using computer generated structured light fields." RMIT University. Applied Sciences, 2010. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20100209.143544.

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Colloidal particles are small particles ranging in size from nanometres to micrometres suspended in a fluid. Amongst many scientific and biological applications, they have been used to model crystallisation, vitrification, and particle interactions along with the use of colloidal model systems for the study of the fundamental nature of the fluid-crystal and fluid-glass phase transitions. It has been shown that colloidal particles can be trapped and manipulated using strongly-focused light beams known as optical tweezers, and this has paved the way for research into the area of micromanipula

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30

Schulte, Anna Julia [Verfasser]. "Light-trapping and Superhydrophobic Plant Surfaces : Optimized Multifunctional Biomimetic Surfaces for Solar Cells / Anna Julia Schulte." Bonn : Universitäts- und Landesbibliothek Bonn, 2012. http://d-nb.info/1044082224/34.

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31

Boesch, Ryan Paul. "SiO₂ nanosphere textured back reflectors for enhanced light trapping in amorphous and nanocrystalline silicon solar cells." [Ames, Iowa : Iowa State University], 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1464182.

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32

Moloney, Jerome V., Kolja Schuh, Paris Panagiotopoulos, M. Kolesik, and S. W. Koch. "Long range robust multi-terawatt MWIR and LWIR atmospheric light bullets." SPIE-INT SOC OPTICAL ENGINEERING, 2017. http://hdl.handle.net/10150/626498.

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There is a strong push worldwide to develop multi-Joule femtosecond duration laser pulses at wavelengths around 3.5-4 and 9-11 mu m within important atmospheric transmission windows. We have shown that pulses with a 4 mu m central wavelength are capable of delivering multi-TW powers at km range. This is in stark contrast to pulses at near-IR wavelengths which break up into hundreds of filaments with each carrying around 5 GW of power per filament over meter distances. We will show that nonlinear envelope propagators fail to capture the true physics. Instead a new optical carrier shock singular

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33

Park, Yoonseok Verfasser], Koen [Akademischer Betreuer] Vandewal, and Karl [Gutachter] [Leo. "Light trapping substrates and electrodes for flexible organic photovoltaics / Yoonseok Park ; Gutachter: Karl Leo ; Betreuer: Koen Vandewal." Dresden : Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://d-nb.info/1126922706/34.

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34

Park, Yoonseok [Verfasser], Koen Akademischer Betreuer] Vandewal, and Karl [Gutachter] [Leo. "Light trapping substrates and electrodes for flexible organic photovoltaics / Yoonseok Park ; Gutachter: Karl Leo ; Betreuer: Koen Vandewal." Dresden : Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://d-nb.info/1126922706/34.

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35

Lin, Yu-Ting. "Femtosecond-laser hyperdoping and texturing of silicon for photovoltaic applications." Thesis, Harvard University, 2014. http://dissertations.umi.com/gsas.harvard:11685.

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This dissertation explores strategies for improving photolvoltaic efficiency and reducing cost using femtosecond-laser processing methods including surface texturing and hyperdoping. Our investigations focus on two aspects: 1) texturing the silicon surface to create efficient light-trapping for thin silicon solar cells, and 2) understanding the mechanism of hyperdoping to control the doping profiles for fabricating efficient intermediate band materials.<br>Engineering and Applied Sciences

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36

Sberna, Paolo Maria. "Novel Approaches to Photoactive Nanostructured Materials for Efficient Solar Cells." Doctoral thesis, Università di Catania, 2015. http://hdl.handle.net/10761/4040.

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Con l'attività di ricerca, riportata in questa tesi di Dottorato, ho fornito, alle questioni concernenti il fotovoltaico, i seguenti contributi: 1.Ricerca e sviluppo di un semplice metodo di sintesi di semiconduttori nanostrutturati, con una morfologia particolarmente adatta all'assorbimento efficiente di radiazione per le celle solari. Inoltre, è stato intrapreso lo studio di innovative geometrie e le relative peculiari interazioni con la luce. 2.Analisi e confronto dimetodi di deposizione fisici e chimici per la sintesi di film sottili di Cu2O, per applicazioni nel fotovoltaico. Poichè l'eff

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37

Lin, Ming-Te. "Carrier Mobility, Charge Trapping Effects on the Efficiency of Heavily Doped Organic Light-Emitting Diodes, and EU(lll) Based Red OLEDs." Thesis, University of North Texas, 2010. https://digital.library.unt.edu/ark:/67531/metadc30483/.

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Transient electroluminescence (EL) was used to measure the onset of emission delay in OLEDs based on transition metal, phosphorescent bis[3,5-bis(2-pyridyl)-1,2,4-triazolato] platinum(ΙΙ) and rare earth, phosphorescent Eu(hfa)3 with 4'-(p-tolyl)-2,2":6',2" terpyridine (ttrpy) doped into 4,4'-bis(carbazol-9-yl) triphenylamine (CBP), from which the carrier mobility was determined. For the Pt(ptp)2 doped CBP films in OLEDs with the structure: ITO/NPB (40nm)/mcp (10nm)/65% Pt(ptp)2:CBP (25nm)/TPBI (30nm)/Mg:Ag (100nm), where NPB=N, N'-bis(1-naphthyl)-N-N'-biphenyl-1, 1'-biphenyl-4, MCP=

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38

Eftekhar, Ali Asghar. "Nanoscale light-matter interactions in the near-field of high-Q microresonators." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/45900.

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The light-matter interaction in the near-field of high-Q resonators in SOI and SiN platforms is studied. The interactions of high-Q traveling-wave resonators with both resonant and non-resonant nanoparticles are studied and different applications based on this enhanced interactions in near-field such as high-resolution imaging of mode profile of high-Q resonators, label-free sensing, optical trapping, and SERS sensing are investigated. A near-field imaging system for the investigation of the near-field phenomena in the near-field of high-Q resonators is realized. A new technique for high-resol

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Lo, Faro Maria Josè. "Silicon Nanowires the Route from Synthesis towards Applications." Doctoral thesis, Università di Catania, 2017. http://hdl.handle.net/10761/3942.

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This work provides an overview on the silicon nanowires synthesis scenario by introducing the most employed bottom-up and top-down strategies, exploiting their main advantages and drawbacks. The impressive structural, optical and electrical properties of these nanostructures promote their implementation in low power consumption nanodevices with improved performances. Some representative examples of Si NW applications in field-effect transistors, broadband photodetectors, low-cost solar cells with improved light absorption and for selective and ultrasensitive biological detectors are reported.

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40

Berrada, Sounni Amine. "Low cost manufacturing of light trapping features on multi-crystalline silicon solar cells : jet etching method and cost analysis." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/61522.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering; and, (S.M. in Technology and Policy)--Massachusetts Institute of Technology, Engineering Systems Division, Technology and Policy Program, 2010.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (p. 127-128).<br>An experimental study was conducted in order to determine low cost methods to improve the light trapping

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41

bin, Nawabjan Amirjan. "Development of a HWCVD epitaxial IBC solar cell as a test platform for novel antireflection and light trapping schemes." Thesis, University of Southampton, 2016. https://eprints.soton.ac.uk/400682/.

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Continuing to reduce the cost-per-watt is the key to providing affordable PV energy. In pursuit of reducing cost-per-watt of silicon PV, this work first focuses on the development of an all back contact silicon solar cell which incorporates a hot wire chemical vapour deposition (HWCVD) technique for p+ emitter deposition. This is as a simpler, lower cost alternative to the traditional high temperature diffusion processes. A proof-of-principle development batch is presented, which resulted in a device with low efficiency, however, through further characterisation, coupled with PC2D device model

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42

Pohe, Stephen Robert. "Aquatic invertebrate fauna of Matapouri, Northland." Click here to access this resource online, 2008. http://hdl.handle.net/10292/425.

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A study of the aquatic invertebrate communities from two locations (Location 1 and Location 2) within the Matapouri catchment in Northland, New Zealand, was conducted to assess community structure in differing local-scale habitats. Four data collection methods were utilised generating 33,058 adult or larval invertebrates. The sampling methods comprised benthic kick-sampling, sticky trapping, light trapping, and emergence trapping. For the sticky trapping and light trapping, sampling was carried out at three different sites (Sites 1–3) within each location. The sites were situated within three

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43

Dyck, Tobias [Verfasser], Uwe [Akademischer Betreuer] Rau, and Andres Fabian [Akademischer Betreuer] Lasagni. "Light trapping by light treatment : direct laser interference patterning for the texturing of front contacts in thin-film silicon solar cells / Tobias Dyck ; Uwe Rau, Andres Fabian Lasagni." Aachen : Universitätsbibliothek der RWTH Aachen, 2017. http://nbn-resolving.de/urn:nbn:de:101:1-2018071608004058241947.

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Dyck, Tobias Verfasser], Uwe [Akademischer Betreuer] [Rau, and Andres Fabian [Akademischer Betreuer] Lasagni. "Light trapping by light treatment : direct laser interference patterning for the texturing of front contacts in thin-film silicon solar cells / Tobias Dyck ; Uwe Rau, Andres Fabian Lasagni." Aachen : Universitätsbibliothek der RWTH Aachen, 2017. http://d-nb.info/1162845805/34.

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45

Coronel, Naomi (Naomi Cristina). "Investigation of porous alumina as a self-assembled diffractive element to facilitate light trapping in thin film silicon solar cells." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/58066.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2009.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 33).<br>Thin film solar cells are currently being investigated as an affordable alternative energy source because of the reduced material cost. However, these devices suffer from low efficiencies, compared to silicon wafer solar cells, due to the poor absorption of longer wavelengths of light in the very thin active layer. One method of improving the efficiency of thin film solar cells is to use light trappin

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46

Hassan, Safaa. "Optical Property Study of 2D Graded Photonic Super-Crystals for Photon Management." Thesis, University of North Texas, 2020. https://digital.library.unt.edu/ark:/67531/metadc1703318/.

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In this dissertation, we study the optical property of 2D graded photonic super-crystals (GPSCs) for photon management. We focused primarily on manipulation and control of light by using the newly discovered GPSCs which present great opportunity for electromagnetic wave control in photonic devices. The GPSC has been used to explore the superior capability of improving the light extraction efficiency of OLEDs. The enhancement of extraction efficiency has been explained in term of destructive interference of surface plasmon resonance and out-coupling of surface plasmon through phase matching pro

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Zhang, Deming. "Holographic Spectrum-Splitting Optical Systems for Solar Photovoltaics." Diss., The University of Arizona, 2013. http://hdl.handle.net/10150/301498.

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Solar energy is the most abundant source of renewable energy available. The relatively high cost prevents solar photovoltaic (PV) from replacing fossil fuel on a larger scale. In solar PV power generation the cost is reduced with more efficient PV technologies. In this dissertation, methods to improve PV conversion efficiency with holographic optical components are discussed. The tandem multiple-junction approach has achieved very high conversion efficiency. However it is impossible to manufacture tandem PV cells at a low cost due to stringent fabrication standards and limited material types t

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Böttler, Wanjiao [Verfasser], Uwe [Akademischer Betreuer] Rau, and Andrei [Akademischer Betreuer] Vescan. "Light scattering and trapping in thin film silicon solar cells with an n-i-p configuration / Wanjiao Böttler ; Uwe Rau, Andrei Vescan." Aachen : Universitätsbibliothek der RWTH Aachen, 2015. http://nbn-resolving.de/urn:nbn:de:hbz:82-rwth-2015-034478.

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Böttler, Wanjiao Verfasser], Uwe [Akademischer Betreuer] [Rau, and Andrei [Akademischer Betreuer] Vescan. "Light scattering and trapping in thin film silicon solar cells with an n-i-p configuration / Wanjiao Böttler ; Uwe Rau, Andrei Vescan." Aachen : Universitätsbibliothek der RWTH Aachen, 2015. http://d-nb.info/1129785084/34.

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Nemani, Lingeshwar. "Effect of SnO₂ Roughness and CdS Thickness on the Performance of CdS/CdTe Solar Cells." Scholar Commons, 2005. https://scholarcommons.usf.edu/etd/790.

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Textured SnO2 films as TCO have been investigated to determine the effect of surface roughness on the performance of CdS/CdTe solar cells. Film roughness was controlled by varying the substrate temperature. Characterization of the SnO2 films has also carried out using AFM measurements. It was found that increase in substrate temperature results in increased roughness of the film. A series of cells were fabricated with different CdS thicknesses to determine the combined effect of SnO2 roughness and CdS thickness. As a part of fabrication process, cells were subjected to different post depositio

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