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Dissertations / Theses on the topic 'OPTOELECTRONICS APPLICATIONS'

Author: Grafiati

Published: 11 September 2023

Last updated: 31 July 2025

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1

Lee, Tae-Hee. "Silver nanocluster single molecule optoelectronics and its applications." Diss., Available online, Georgia Institute of Technology, 2004:, 2004. http://etd.gatech.edu/theses/available/etd-01302004-144007/unrestricted/lee%5Ftaehee%5F200405%5Fphd.pdf.

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Thesis (Ph. D.)--Chemistry and Biochemistry, Georgia Institute of Technology, 2004.<br>Srinivasarao, Mohan, Committee Member; Sherrill, C. David, Committee Member; Orlando, Thomas, Committee Member; EL-Sayed, Mostafa, Committee Member; Dickson, Robert, Committee Chair. Vita. Includes bibliographical references (leaves 136-159).

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2

Annetts, Paul Julian. "Advanced applications of semiconductor optical amplifiers." Thesis, University of Bristol, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.299275.

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3

Lansley, Stuart Peter. "Diamond photodetectors for deep ultra-violet applications." Thesis, University College London (University of London), 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.269925.

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4

Occhi, Luca. "PEDOT:PSS-based hybrid materials for optoelectronics applications." Thesis, Imperial College London, 2017. http://hdl.handle.net/10044/1/61335.

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Organic electronics is a research area that, in recent year, has received increasing attention both from academia and industry. Performance of organic optoelectronic devices, such as organic light-emitting diodes (OLEDs) and organic photovoltaic devices (OPVs), relies on the electrical and optical characteristics of each component. However, the performance are frequently limited by the distribution of the internal electromagnetic field: an effective light management, involving either the incoupling of incident radiation (in case of photovoltaic cells and photo-detectors), or the outcoupling of

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5

Asil, Demet. "Hybrid functional semiconductors for optoelectronic applications." Thesis, University of Cambridge, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.708582.

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6

Moreira, Paulo Manuel Rodrigues Simões. "Optical receiver design and optimisation for multi-gigahertz applications." Thesis, Bangor University, 1993. https://research.bangor.ac.uk/portal/en/theses/optical-receiver-design-and-optimisation-for-multigigahertz-applications(851ce42c-3b48-488f-88c3-8f4137b79607).html.

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This thesis is concerned with structures and design techniques appropriate for the realisation of integrated optical receivers operating at multi-gigahertz frequencies. The development and practical proving of novel signal designs tailored specifically to very high bit-rate optical communication systems is reported. Timing imperfections and signal dependent noise - a result of the optical amplification deployed in all high-performance systems - are two major impairments that must be accommodated if optimum system performance is to be achieved. Here, a signal design that accommodates these impa

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Gebremichael, Yonas Meressi. "Highly birefringent fibre based polarisation modulated ellipsometry and sensor applications." Thesis, City University London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390940.

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8

Addington, J. Shawn. "Integrated optoelectronics applications in fiber optic receiver packaging." Diss., Virginia Tech, 1995. http://hdl.handle.net/10919/37463.

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The objective of this research is the' development and evaluation of a new style of integrated optoelectronics. The approach combines the selectivity of traditional hybrid integration with the "internal" interconnection capabilities of monolithic integration, through the use of low temperature cofireable ceramic (LTCC) tape systems. This new integration technique is applied to a fiber optic receiver system, and focuses on three main tasks. The first task involves the realization, and eventual hybridization, of the receiver electronics, including the photodetector and the associated amplifier c

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9

Pratt, Andrew Richard. "Control of indium migration on patterned substrates for optoelectronic device applications." Thesis, Imperial College London, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.307775.

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10

Moon, Kevin. "Design and characterisation of CCD detector systems for x-ray applications." Thesis, University of York, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.311014.

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11

Sambasivan, Nadarajah. "The adhesion of an optical adhesive to glass substrates for optoelectronics applications." Thesis, University of Surrey, 2001. http://epubs.surrey.ac.uk/843340/.

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Surface characterisation and failure mechanisms of adhesively bonded glass butt joints were studied. Materials of relevance to the adhesive bonding of fibre optic components were employed: a fine annealed Grade A glass (Schott(TM) BK - 7), and a fast curing epoxy based optical adhesive. The joint behaviour and their durability under adverse environmental conditions were investigated, and the subsequent, failed joint fracture surfaces were examined using XPS, ToF-SIMS and SEM. Surface analysis techniques have been employed to characterise components of the adhesive systems and to interrogate th

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12

Hughes, Patrick Joseph. "Photoreflectance characterisation of AlGaAs/GaAs single quantum well structures for optoelectronic applications." Thesis, University of Surrey, 1995. http://epubs.surrey.ac.uk/844385/.

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The modification of the optical properties of quantum well structures by post growth thermal diffusion techniques is important for the fabrication and integration of quantum well devices for optoelectronic applications. This thesis is concerned with the characterisation of as-grown and thermally interdiffused quantum well structures using room temperature photoreflectance. In particular, all the interband transitions (symmetry 'allowed' and 'forbidden') in the subband of four AlGaAs/GaAs single quantum well structures were determined using photoreflectance. The identification of the transition

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13

Duffy, Christopher. "Stimulated Brillouin Scattering In Monomode Optical Fibres For Sensing And Signal Processing Applications." Thesis, Cranfield University, 1994. http://dspace.lib.cranfield.ac.uk/handle/1826/4550.

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This thesis describes research into non-linear optical effects in monomode fibres for sensing and signal processing schemes. The work is initially placed into the context of relevant fibre sensor applications for aerospace. Candidate non-linear processes are then described and Stimulated Brillouin Scattering (SBS) targeted as a suitable mechanism. The SBS process in monomode fibres is then fully described, including a theoretical assessment of the magnitude of both pump and Stokes signals with fibre length. The project developed, firstly, an all-optical frequency shifter using SBS which genera

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14

Yu, S. F. "Investigation of grating coupled surface emitting lasers for optical interconnects and signal processing applications." Thesis, University of Cambridge, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.319578.

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15

Saberi, Moghaddam Reza. "Metal oxide nanostructures for hybrid optoelectronic applications." Thesis, University of Cambridge, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.709034.

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16

Harwell, Jonathon R. "Optoelectronic applications of lead halide perovskites." Thesis, University of St Andrews, 2018. http://hdl.handle.net/10023/16943.

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Hybrid perovskites are a new class of semiconductor which have proven to be an ideal material for making thin film solar cells. They have the advantages of flexibility, low cost, and easy processing, whilst achieving efficiencies competitive with monocrystalline silicon. Many of the properties which make them ideal for solar cells are also applicable to light emitting devices, and there is now increasing interest in their application for light emitting diodes (LEDs) and lasers. This thesis aims to use a range of novel spectroscopy techniques to investigate the origin of these favourable proper

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17

Charati, Manoj B. "Peptides and polypeptides as scaffolds for optoelectronics and biomaterials applications." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 200 p, 2009. http://proquest.umi.com/pqdweb?did=1891590581&sid=3&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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18

Wen, Xiaonan. "Piezotronics as an electromechanical interfacing technology for electronic and optoelectronic applications." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/53844.

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Innovation on human-machine interfacing technologies is critical for the development of smart, multifunctional and efficient electronic/optoelectronic systems. The effect of piezotronics is a newly started field of study, which utilizes piezoelectric polarization that is mechanically induced inside a piezoelectric semiconductor to regulate electron transport across electronic contact interfaces. With the concept coined in 2006, many efforts have been contributed to studying the underlying physical mechanism of this effect as well as demonstrating various applications based on single nanowire p

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19

Hallani, Rawad Kamal. "Designing Anthradithiophene Derivatives Suitable For Applications in Organic Electronics and Optoelectronics." UKnowledge, 2015. http://uknowledge.uky.edu/chemistry_etds/61.

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Anthradithiophene (ADT) derivatives have proven to be a front-runner in the world of small molecule semiconductors for organic electronics and optoelectronics. This is mainly due to the improved stability, easy tuning of chemical and physical properties, and impressive device performance that these molecules possess, especially in organic field effect transistors (OFET) and organic photovoltaics (OPV). The second chapter of this dissertation shows that reducing the amount of alkylsilylethynyl groups, used for functionalizing and solubilizing the ADT backbone, does alter the chemical, physical

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20

Elsayed, Moussa Mehdi. "Supramolecular assemblies with organophosphorated based derivatives for potential applications in optoelectronics." Thesis, Rennes 1, 2013. http://www.theses.fr/2013REN1S135.

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Au cours de ce travail, nous avons préparé des clips moléculaires efficaces à partir de dimères de cuivre(I) ou d'or(I) portant des ligands organophosphorés en tirant parti des interactions métallophiles. Dans un premier temps, un complexe de cuivre(I) portant des ligands bis(2-pyridyl)phospholes a été utilisé comme clip moléculaire pour organiser des systèmes pi monotopiques à fonction cyano et portant divers fragments pi-conjugués. Ces dimères formés par assemblage pis'auto-organisent à l'état solide en colonnes pi infinies. Dans un deuxième temps, un complexe d'or(I) portant un ligand biph

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21

Augustine, Godfrey. "Modeling, fabrication, and characterization of InP thin films and dvices for optoelectronic applications." Diss., Georgia Institute of Technology, 1993. http://hdl.handle.net/1853/15382.

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22

Goedel, Karl Christoph. "Optoelectronic applications of solution-processable sulfide semiconductors." Thesis, University of Cambridge, 2017. https://www.repository.cam.ac.uk/handle/1810/268085.

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Solar cells and photodetectors rely on similar physical principles based on the interaction of light and matter. Both types of optoelectronic devices are indispensable in a wide range of technological applications, from large-scale renewable power conversion to everyday consumer items. In this thesis, the use of facile solution-processable semiconductors in solar cells and light sensors is studied with a focus on antimony sulfide (Sb₂S₃) and antimony sulfoiodide (SbSI). The improvement of the photovoltaic performance in Sb₂S₃ sensitized solar cells upon the controlled partial oxidation of the

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23

Jones, Gareth Francis. "Modification of graphene for applications in optoelectronic devices." Thesis, University of Exeter, 2017. http://hdl.handle.net/10871/31537.

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In this thesis, we investigate how the optical and electronic properties of graphene may be modified in proximity to various other materials. We present several examples of how modification in this way can help make graphene better suited for specific device applications. We develop a method of up-scaling the fabrication of FeCl3-intercalated few-layer graphene from micron-sized flakes to macroscopic films so that it may be used as a transparent electrode in flexible light-emitting devices. We also find that photo-responsive junctions can be arbitrarily written into FeCl3-intercalated few-laye

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24

Cheng, An-jen Park Minseo Tzeng Y. "One dimensional zinc oxide nanostructures for optoelectronics applications solar cells and photodiodes /." Auburn, Ala, 2008. http://repo.lib.auburn.edu/EtdRoot/2008/SUMMER/Electrical_and_Computer_Engineering/Dissertation/Cheng_An-jen_33.pdf.

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25

Stamplecoskie, Kevin. "Silver Nanoparticle Controlled Synthesis and Implications in Spectroscopy, Biomedical and Optoelectronics Applications." Thèse, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/24164.

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This thesis describes the photochemical synthesis of silver nano particles, several ways to make these particles as well as control the size and shape of the colloidal particles. Understanding the primary reactions in photochemical nanoparticle formation has lead to important contributions to the overall mechanism of metal nanoparticle synthesis. The size and shape control of the particles is shown to have important implications for the Raman spectrum of surface bound molecules. The particles have also been used in antibacterial properties where it was shown that silver nanoparticles are more

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26

Hamada, Tomoyuki. "Ab Initio Molecular Orbital Study of Nonlinear Optical Materials for Optoelectronics Applications." Kyoto University, 1998. http://hdl.handle.net/2433/182321.

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27

Kahn, Mohammed Tariq Ekeramodien. "Development of a non-monochromatic lightwave sensor for applications in smart structures research." Thesis, Peninsula Technikon, 1998. http://hdl.handle.net/20.500.11838/888.

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Thesis (MTech (Electrical Engineering))--Peninsula Technikon, Cape Town, 1998<br>The purpose of this study was to perform an investigation into advances in the field of opto-electronics and to develop a suitable lightwave sensor, for application in smart structures research. Included in the scope of this research was the theoretical development and analysis of an appropriate technology to lead to an implementation of such sensors. This project forms part of an overall plan to gain experience in optoelectronic (photonic) sensor design. In research done previously in smart structure monito

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28

Zaman, Saima. "Synthesis of ZnO, CuO and their Composite Nanostructures for Optoelectronics, Sensing and Catalytic Applications." Doctoral thesis, Linköpings universitet, Institutionen för teknik och naturvetenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-81120.

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Research on nanomaterials has become increasingly popular because of their unique physical, chemical, optical and catalytic properties compared to their bulk counterparts. Therefore, many efforts have been made to synthesize multidimensional nanostructures for new and efficient nanodevices. Among those materials, zinc oxide (ZnO), has gained substantial attention owing to many outstanding properties. ZnO besides its wide bandgap of 3.34 eV exhibits a relatively large exciton binding energy (60 meV) at room temperature which is attractive for optoelectronic applications. Likewise, cupric oxide

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29

Narayan, R. "Development of novel methacrylic and supramolecular comb polymers of rylenebisimides for applications in optoelectronics." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 2013. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/2186.

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30

Lee, Kyoung-Keun. "Implementation of AlGaN/GaN based high electron mobility transistor on ferroelectric materials for multifunctional optoelectronic-acoustic-electronic applications." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/28209.

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Thesis (M. S.)--Electrical and Computer Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: William. Alan Doolittle; Committee Member: Jeffrey Nause; Committee Member: Linda S. Milor; Committee Member: Shyh-Chiang Shen; Committee Member: Stephen E. Ralph.

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31

Hosatte, Mikaël. "Nanostructured silicon-based metamaterial and its process of fabrication for applications in optoelectronics and energy." Thesis, Strasbourg, 2014. http://www.theses.fr/2014STRAD019.

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Des nanostructures basées sur des différences de cristallinité ont été insérées dans des cellules test en silicium par des techniques d’amorphisation innovantes. Un nouveau mécanisme de multiplication de porteurs a ainsi été observé. Cet effet peut provenir des niveaux d’énergie électronique introduits par de grandes densités locales de bi-lacunes. Un principe de fonctionnement impliquant des mécanismes à niveaux d’énergie multiples et un transport électronique rapide au sein de la bande d’énergie des atomes de phosphore non-ionisés a également été proposé. Cela conduit à une asymétrie favorab

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32

Giri, Binod. "Controlled Synthesis of Nanostructured Two-dimensional Tin Disulfide and its Applications in Catalysis and Optoelectronics." Digital WPI, 2020. https://digitalcommons.wpi.edu/etd-dissertations/609.

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Tin disulfide (SnS2) is a two-dimensional (2D) material with excellent properties and high prospects for low-cost solutions to catalytic and optoelectronic applications. In this work, vertical nanoflakes of SnS2 have been synthesized using custom-designed close space sublimation (CSS) system and investigated for applications in photoelectrochemical (PEC) water oxidation and metal-semiconductor-metal (MSM) photodetector. For the PEC application, vertical SnS2 nanoflakes grown directly on transparent conductive substrates have been used as photoanodes, which produce record photocurrents of 4.5 m

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33

Gibbons, Michael J. "Robust, reusable qubits for quantum information applications." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/39474.

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Most neutral atom quantum computing experiments rely on destructive state detection techniques that eject the detected qubits from the trap. These techniques limit the repetition rate of these experiments due to the necessity of reloading a new quantum register for each operation. We address this problem by developing reusable neutral atom qubits. Individual Rubidium 87 atoms are trapped in an optical lattice and are held for upwards of 300 s. Each atom is prepared in an initial quantum state and then the state is subsequently detected with 95% fidelity with less than a 1% probability of l

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34

Wang, Feng. "Modes, Excitation and Applications of Plasmonic Nano-apertures and Nano-cavities." Kent State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=kent1348588159.

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35

Richter, Johannes Martin. "Charge carrier relaxation in halide perovskite semiconductors for optoelectronic applications." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/275568.

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Lead halide perovskites have shown remarkable device performance in both solar cells and LEDs. Whilst the research efforts so far have been mainly focussed on device optimisation, little is known about the photophysical properties. For example, the nature of the bandgap is still debated and an indirect bandgap due to a Rashba splitting has been suggested. In this thesis, we study the early-time carrier relaxation and its impact on photoluminescence emission. We first study ultrafast carrier thermalization processes using 2D electronic spectroscopy and extract characteristic carrier thermalizat

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36

Zrir, Mohammad ali. "Tensile-strained and highly n-doped Germanium for optoelectronic applications." Thesis, Aix-Marseille, 2015. http://www.theses.fr/2015AIXM4036/document.

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Dans le cadre de ce travail de thèse, nous avons étudié une approche permettant de réaliser les composants d'émission de la lumière basés sur les couches epitaxiées de Ge contraint en tension et fortement dopé de type n. Afin de créer de contrainte en tension dans les films épitaxiés de Ge, nous avons investi deux méthodes : faire croître du Ge sur InGaAs ayant un paramètre de maille plus grand que celui de Ge, et faire croître du Ge sur Si, en prenant l'avantage du coefficient de dilatation thermique du Ge, qui est deux fois plus grand que celui du Si. Concernant la croissance de Ge sur les s

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37

Hajsaid, Marwan. "Photoresponse study of platinum silicide Schottky-barrier diodes and electrical characterization of porous silicon with some device applications /." free to MU campus, to others for purchase, 1996. http://wwwlib.umi.com/cr/mo/fullcit?p9717171.

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38

Cheung, Ka-yi, and 張嘉兒. "Optical parametric processes in biophotonics and microwave photonics applications." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2010. http://hub.hku.hk/bib/B45207835.

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39

Norton, Dennis Thomas Jr. "Type-II InAs/GaSb superlattice LEDs: applications for infrared scene projector systems." Diss., University of Iowa, 2013. https://ir.uiowa.edu/etd/5031.

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Optoelectronic devices operating in the mid-wave (3-5 Μm) and long-wave (8-12 Μm) infrared (IR) regions of the electromagnetic spectrum are of a great interest for academic and industrial applications. Due to the lack of atmospheric absorption, devices operating within these spectral bands are particularly useful for spectroscopy, imaging, and dynamic scene projection. Advanced IR imaging systems have created an intense need for laboratory-based infrared scene projector (IRSP) systems which can be used for accurate simulation of real-world phenomena occurring in the IR. These IRSP systems allo

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40

Yang, Ying. "Organic semiconductor lasers : compact hybrid light sources and development of applications." Thesis, University of St Andrews, 2010. http://hdl.handle.net/10023/2569.

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This thesis describes a number of studies on organic semiconductors as laser gain media with the aim of simplifying the excitation scheme and exploring potential applications. A hybrid device taking the advantage of high power inorganic light emitting diodes (LEDs) and low threshold organic distributed feedback lasers is demonstrated to realize a LED pumped organic laser. When the drive current is higher than 152 A, a sharp peak is clearly observed in the laser output spectrum, implying the LED successfully pumps the polymer laser above threshold. This is the first time an incoherent LED has b

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41

Schnabel, Manuel. "Silicon nanocrystals embedded in silicon carbide for tandem solar cell applications." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:da5bbb64-0bcd-4807-a9f3-4ff63a9ca98d.

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Tandem solar cells are potentially much more efficient than the silicon solar cells that currently dominate the market but require materials with different bandgaps. This thesis presents work on silicon nanocrystals (Si-NC) embedded in silicon carbide (SiC), which are expected to have a higher bandgap than bulk Si due to quantum confinement, with a view to using them in the top cell of a tandem cell. The strong photoluminescence (PL) of precursor films used to prepare Si-NC in SiC (Si-NC/SiC) was markedly reduced upon Si-NC formation due to simultaneous out-diffusion of hydrogen that passivate

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42

VOHRA, VARUN. "Multilevel organization of hybrid materials based on zeolite L crystals for light emitting devices applications." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2009. http://hdl.handle.net/10281/7549.

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Zeolite L has been shown to be a successful host material for preparing a large variety of inorganic/organic hybrids. The channel entrances of the zeolite L are of a diameter of 0,71 nm and therefore, by tuning the size and the shape of the organic guest, one can make those guests enter one by one due to size restrictions. Once in the channels, well chosen dye molecules stay separated one from another which leads to a higher photoluminescence quantum yield. A challenge concerning such host guest compounds is to be able to optically or electronically address the dye inside the zeolite channel

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43

Cheung, Chor-keung. "The construction of a focused low energy positron beam facility and its application in the study of various optoelectronic materials." View the Table of Contents & Abstract, 2006. http://sunzi.lib.hku.hk/hkuto/record/B36995770.

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44

Ego, Christophe. "Oligo and polyfluorenes of controlled architecture for applications in opto-electronics." Doctoral thesis, Universite Libre de Bruxelles, 2005. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210958.

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Polyfluorenes are polymers with outstanding properties: They are semi-conducting, relatively rigid, quite stable chemically and thermally, easily substituted and therefore potentially soluble in numerous solvents and more importantly, they exhibit blue electro- and photoluminescence. For all these reasons, these polymers are the subjects of numerous academic and industrial researches.<p>The first subject of this work deal with the design, the synthesis and the characterisation of polyfluorenes end-capped with perylene dicarboximide derivatives. These perylene moieties are able to interact by e

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45

Cheung, Chor-keung, and 張初強. "The construction of a focused low energy positron beam facility and its application in the study of various optoelectronic materials." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B37434925.

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46

Gorbenko, Viktoriia. "Caractérisation par faisceaux d’ions d’hétérostructures III-V pour les applications micro et optoélectroniques." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAT140/document.

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L'intégration de composés semi-conducteurs III-V sur silicium devrait conduire au développement de nouveaux dispositifs micro- et optoélectroniques performants. Le composé InGaAs de haute mobilité électronique est un candidat prometteur pour le transistor métal-oxyde-semiconducteur à effet de champ à canal n au-delà du noeud technologique 10 nm. En outre les semi-conducteurs III-V sont aussi des matériaux appropriés pour la fabrication de composants optiques (lasers, diodes) et de dispositifs analogiques ultra-haute fréquence et leur intégration sur une plateforme Si ajoutera de nouvelles fonc

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47

Kovacik, Peter. "Vacuum deposition of organic molecules for photovoltaic applications." Thesis, University of Oxford, 2012. http://ora.ox.ac.uk/objects/uuid:98461a90-5ae3-4ae3-9245-0f825adafa72.

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Organic photovoltaics have attracted considerable research and commercial interest due to their lightness, mechanical flexibility and low production costs. There are two main approaches for the fabrication of organic solar cells – solution and vacuum processing. The former relies on morphology control in polymer-fullerene blends resulting from natural phase separation in these systems. The latter takes advantage of solvent-free processing allowing highly complex multi-junction architectures similar to inorganic solar cells. This work aims to combine the benefits of both by depositing conjugate

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48

Das, Aparna. "Boîtes quantiques de semi-conducteurs nitrures pour des applications aux capteurs opto-chimiques." Phd thesis, Université de Grenoble, 2012. http://tel.archives-ouvertes.fr/tel-00870365.

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Ce travail de thèse a porté sur la synthèse de boîtes quantiques (BQs) de semi-conducteurs nitrures orientés (11-22) ou (0001) par épitaxie par jets moléculaires à plasma d'azote, pour des applications aux capteurs chimiques pour la détection du niveau de pH, d'hydrogène ou des hydrocarbures dans des environnements gazeux ou liquides. Dans la première partie de ce manuscrit, je décri la synthèse des couches bidimensionnelles semi-polaires (11-22) : des couches binaires (AlN, GaN, and InN) et des ternaires (AlGaN et InGaN), qui sont requises pour le contact de référence dans les transducteurs e

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Coronel-Rico, Juan Fernando. "Étude et réalisation d'un oscillateur à base de VCSEL verrouillé en phase pour des applications en télécommunications." Thesis, Toulouse, ISAE, 2016. http://www.theses.fr/2016ESAE0013/document.

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Abstract:

Les oscillateurs sont présents dans tous les systèmes de communications que nous utilisons. Ils nous permettent de faire la synchronisation entre l’émetteur et le récepteur d’un message. La qualité de cette synchronisation dépend de la stabilité de l’oscillateur. Afin de caractériser cette stabilité dans le domaine fréquentiel, le bruit de phase est utilisé comme paramètre de référence. Un oscillateur qui délivre un signal avec une faible valeur de bruit de phase est un oscillateur de grande pureté spectrale. Les oscillateurs électroniques ont une bonne performance à basse fréquence. En mesure

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Greul, Enrico [Verfasser], and Thomas [Akademischer Betreuer] Bein. "On the way to non-toxic and highly stable perovskite-based optoelectronics : synthesis and investigations of lead-free perovskites for photovoltaic applications / Enrico Greul ; Betreuer: Thomas Bein." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2019. http://d-nb.info/119109815X/34.

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