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Dissertations / Theses on the topic 'Molecular diode'

Author: Grafiati

Published: 25 May 2024

Last updated: 31 July 2025

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1

Deeny, J. A. "Tunable diode laser spectroscopy." Thesis, University of Oxford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.253325.

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2

Johnson, Simon Anthony. "Trace gas detection using diode lasers." Thesis, University of Cambridge, 1986. https://www.repository.cam.ac.uk/handle/1810/290026.

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3

Loroño, G. Marcos Antonio. "High resolution infrared diode laser spectroscopy of jet-cooled polyatomic molecules and molecular clusters." Thesis, University of Cambridge, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.621626.

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4

Hultell, Andersson Magnus S. "A Molecularly Switchable Polymer-Based Diode." Thesis, Linköping University, Department of Science and Technology, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-1571.

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<p>Despite tremendous achievements, the field of conjugated polymers is still in its infancy, mimicking the more mature inorganic, i.e. silicon-based, technologies. We may though look forward to the realisation of electronic and electrochemical devices with exotic designs and device applications, as our knowledge about the fundamentals of these promising materials grow ever stronger. </p><p>My own contribution to this development, originating from an idea first put forward by my tutor, Professor Magnus Berggren, is a design for a switchable polymer-based diode. Its architecture is based on a m

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5

Rothwell, W. J. M. "Infrared diode laser spectroscopy of free radicals and molecular ions." Thesis, University of Cambridge, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.355508.

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6

Liu, Zhuan. "Infrared diode laser absorption spectroscopy of gas phase molecular ions." Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.627231.

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7

Denton, Bryan John. "The application of diode lasers to atomic spectroscopy." Thesis, University of Newcastle Upon Tyne, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316100.

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8

Norton, Peter Robert. "The molecular beam epitaxy technique for PbSe-based lead chalcogenide diode lasers." Thesis, University of Bath, 1986. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370994.

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9

Chan, Kit-ying Anna. "Near-ir tunable diode laser absorption spectroscopy of gaseous pollutants /." Hong Kong : University of Hong Kong, 1998. http://sunzi.lib.hku.hk/hkuto/record.jsp?B19905014.

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10

Brown, Philip Robert. "Diode laser spectroscopy of molecular ions and excited atoms in alternative current discharges." Thesis, University of Cambridge, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.315821.

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11

陳潔瑩 and Kit-ying Anna Chan. "Near-ir tunable diode laser absorption spectroscopy of gaseous pollutants." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1998. http://hub.hku.hk/bib/B31214940.

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12

Ning, Ya Nong. "A study of optical fibre interferometric systems using multimode laser diode light sources." Thesis, City University London, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316037.

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13

Park, Jeongho. "Molecular Beam Epitaxy (MBE) Growth of Rare Earth Doped Gallium Nitride for Laser Diode Application." University of Cincinnati / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1148273402.

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14

Sicard, Lambert. "Assemblages linéaires et cycliques d’unités fluorènes pour l’électronique organique : relations structure-propriétés." Thesis, Rennes 1, 2018. http://www.theses.fr/2018REN1S066/document.

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Les oligophénylènes constituent une classe de molécules centrale dans la conception de semi-conducteurs organiques pour des applications optoélectroniques. Ces travaux portent sur la synthèse et l’étude approfondie de dérivés linéaires et cycliques du fluorène (un biphényle rigidifié par un pont méthylène), fragment constitutif essentiel dans l’électronique organique. Nous nous intéressons en particulier aux relations structure-propriétés de ces systèmes π-conjugués. Dans une première partie, avec comme cadre le développement de matériaux hôtes pour diodes électroluminescentes (PhOLEDs), nous

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15

Crow, Martin Brian. "High resolution diode laser spectroscopy of transient species." Thesis, University of Oxford, 2012. http://ora.ox.ac.uk/objects/uuid:64bd9688-fdb3-4d05-ac2b-2a9bb621bb7c.

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This thesis presents applications of near infrared diode lasers to high resolution spectroscopy of transient radical species. Firstly, time resolved near infrared laser gain versus absorption is utilised in Chapter 2 to determine the I∗ quantum yield following ultraviolet photolysis of iodobenzene and its fluorinated analogues. The experimental method is first confirmed by comparison with literature values of the quantum yield for iodomethane photolysis, returning a quantum yield of Φ(I∗) = 0.71 ± 0.04 in good agreement with the literature, before being applied to determine the I∗ quantum yiel

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16

Liang, Yu-Han. "Deep Ultraviolet Light Emitters Based on (Al,Ga)N/GaN Semiconductor Heterostructures." Research Showcase @ CMU, 2017. http://repository.cmu.edu/dissertations/1008.

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Deep ultraviolet (UV) light sources are useful in a number of applications that include sterilization, medical diagnostics, as well as chemical and biological identification. However, state-of-the-art deep UV light-emitting diodes and lasers made from semiconductors still suffer from low external quantum efficiency and low output powers. These limitations make them costly and ineffective in a wide range of applications. Deep UV sources such as lasers that currently exist are prohibitively bulky, complicated, and expensive. This is typically because they are constituted of an assemblage of two

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17

Eriksson, Mirjam. "Tunable diode laser absorptionspectroscopy of atomic potassium in a KOH-seeded flat flame." Thesis, Umeå universitet, Institutionen för fysik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-146503.

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Potassium (K) is the main ash-forming element released from biomass during thermochemical conversion. A better understanding of K chemistry and monitoring of K species is needed to optimize combustion systems. Since K species are highly reactive and prevailing concentrations depend on the conversion conditions, accurate quantification requires in situ measurement techniques. Tunable diode laser absorption spectroscopy with a single-mode distributed feedback laser is used to probe the D1 transition of atomic potassium, K(g), at 769.9 nm. The large current tuning range of the diode laser (5 cm-1

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18

Jangid, Vikas. "Rectenna device on coupling of molecular diodes and plasmonic nano-antennas to convert light into electricity." Electronic Thesis or Diss., Aix-Marseille, 2022. http://www.theses.fr/2022AIXM0032.

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L'utilisation massive de combustibles fossiles provoque un changement climatique et un réchauffement de la planète à un rythme alarmant. Ce travail de thèse se concentre sur le développement d'un dispositif de cellule solaire de troisième génération qui exploite la nature ondulatoire de la lumière en dépassant la limite de Schockley-Queisser. Le dispositif est appelé rectenna (antenne redresseuse) et est composé d'un couplage de nano-antennes plasmoniques et de diodes moléculaires. Le principe de fonctionnement du dispositif est le suivant : absorption de la lumière incidente par des nanocubes

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19

Baran, Stuart George. "Gas-phase detection methods using diode lasers." Thesis, University of Oxford, 2009. http://ora.ox.ac.uk/objects/uuid:43e8ec07-9e1a-4060-bc8b-be75c8565600.

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Diode lasers are a convenient and economical source of near-infrared radiation, which may usefully be applied to a host of diﬀerent sensitive detection methods; this thesis presents novel extensions of these methods, making use of the favourable characteristics of this type of light source. The ﬁrst part of this thesis details the development of an optical feedback cavity-enhanced absorption spectroscopy (OF-CEAS) apparatus, including the development of the optical system, the sample handling, and the electronics for feedback phase control. A preliminary demonstration of the system is reported

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20

SILVA, Cícero Moezio da. "Travamento da freqüência de um diodo laser nas asas da ressonância de uma linha atômica." Universidade Federal de Campina Grande, 2013. http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/1947.

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Submitted by Emanuel Varela Cardoso (emanuel.varela@ufcg.edu.br) on 2018-10-10T17:10:14Z No. of bitstreams: 1 CICERO MOEZIO DA SILVA – DISSERTAÇÃO (PPGFísica) 2013.pdf: 1359216 bytes, checksum: 450c592c37b5fc9ef90ce40e270eaaae (MD5)<br>Made available in DSpace on 2018-10-10T17:10:14Z (GMT). No. of bitstreams: 1 CICERO MOEZIO DA SILVA – DISSERTAÇÃO (PPGFísica) 2013.pdf: 1359216 bytes, checksum: 450c592c37b5fc9ef90ce40e270eaaae (MD5) Previous issue date: 2013-08-16<br>Capes<br>Este trabalho reporta o desenvolvimento experimental de um sistema de travamento da frequência de um diodo laser nas a

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21

Gravelle, Simon. "Nanofluidics : a theoretical and numerical investigation of fluid transport in nanochannels." Thesis, Lyon 1, 2015. http://www.theses.fr/2015LYO10238.

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Cette thèse décrit diverses situations liées au transport fluidique aux nano-échelles. Le premier chapitre est une introduction à la nanofluidique qui contient une revue des longueurs caractéristiques, des forces et des phénomènes présents aux nano-échelles. Le deuxième chapitre est une étude de l'impact de la géométrie sur la perméabilité hydrodynamique d'un nanopore. Inspirée par la forme des aquaporines, cette étude suggère une optimisation possible pour des canaux biconiques. Le troisième chapitre est une étude du remplissage capillaire dans des canaux sub-nanométriques en carbone. Cette é

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22

McBride, Patrick M. "The Effect of Polarization and InGaN Quantum Well Shape in Multiple Quantum Well Light Emitting Diode Heterostructures." DigitalCommons@CalPoly, 2012. https://digitalcommons.calpoly.edu/theses/822.

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Previous research in InGaN/GaN light emitting diodes (LEDs) employing semi-classical drift-diffusion models has used reduced polarization constants without much physical explanantion. This paper investigates possible physical explanations for this effective polarization reduction in InGaN LEDs through the use of the simulation software SiLENSe. One major problem of current LED simulations is the assumption of perfectly discrete transitions between the quantum well (QW) and blocking layers when experiments have shown this to not be the case. The In concentration profile within InGaN multiple qu

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23

Mohib, Abdul. "Molecular diodes." Thesis, Cranfield University, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.439279.

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24

Siladie, Alexandra-Madalina. "Nanofils AlxGa1-xN et AlN pour la réalisation de diodes émettant dans l'UV-C." Thesis, Université Grenoble Alpes (ComUE), 2019. http://www.theses.fr/2019GREAY059.

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La thèse sera consacrée à la croissance par épitaxie par jets moléculaires d’hétérostructures AlGaN/GaN de type filaire, incluant leur dopage de type n et de type p. La caractérisation des propriétés structurales et optiques de ces hétérostructures sera menée à bien en combinant des expériences de microscopie électronique à balayage, de spectroscopie de la photoluminescence, de diffraction de RX. Dans le cadre d’un partenariat national et international, des études de nanocathodoluminescence à haute résolution et de Kelvin probe seront également menées. Finalement, on réalisera des structures c

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25

Bernard, Alice. "Towards an electrically-injected optical parametric oscillator." Thesis, Sorbonne Paris Cité, 2018. http://www.theses.fr/2018USPCC104/document.

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Le travail présenté dans cette thèse porte sur la conception, la fabrication et la caractérisation de sources prévues pour fonctionner à la fois comme diode laser et comme oscillateur paramétrique optique. Ces lasers sont conçus pour émettre sur un mode d’ordre supérieur afin de permettre une conversion de fréquence paramétrique avec les modes fondamentaux du guide à la fréquence moitié. La diode laser et l’OPO partagent la même cavité optique ; pour assurer l’accord de phase et corriger les écarts à la structure nominale induits lors de l’élaboration par épitaxie, la largeur de ruban est util

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26

Zhou, Xin. "Towards voltage-gated ion channels, molecular diodes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape16/PQDD_0012/NQ32730.pdf.

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27

Kwong, Chin Fai. "Molecularly doped organic electroluminescent diodes." HKBU Institutional Repository, 2000. http://repository.hkbu.edu.hk/etd_ra/254.

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28

Apostol, Petru. "Synthèse et propriétés de cristaux liquides et magnétiques de 1,8,15,22-tétraalkoxy-phtalocyanines de métaux (II) et (III)." Thesis, Bordeaux, 2016. http://www.theses.fr/2016BORD0109/document.

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Cette thèse décrit dans un premier temps la synthèse entièrement régiosélective de phtalocyanines tétra-(endo-alcoxy)-fonctionnalisées puis la formation de leurs complexes avec des ions métalliques. Dans un second temps sont étudiées leurs propriétés magnétiques, l'induction de mésophases colonnaires dans des gammes de températures convenables et avec des tailles modérées de substituants, ainsi que leur utilisation dans des diodes organiques. L'approche synthétique à suivre est la cyclo-tétramérisation de 3-(2-alkylalcoxy)-phtalonitriles suivie de la coordination d'un ion métallique. La symétr

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29

Jami, Avinash. "Fused-Molecular Systems for Organic Light Emitting Diodes." TopSCHOLAR®, 2015. http://digitalcommons.wku.edu/theses/1543.

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Organic light emitting diodes (OLEDs) are electronic devices made by sandwitching organic light emissive materials between two electrodes. When voltage is applied across the two conductors, a bright light is generated. The color of the emitting light depends on the band gap of the semiconducting material. The work described here focuses on designing and synthesizing narrow band gap molecular systems derived from fused-arene derivatives for producing organic blue light emitting diodes. Three molecular systems derived from anthracene, pyrene, and carbazole, were designed and synthesized. Two mol

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30

Hansford, Graeme Mark. "Diode laser infrared spectroscopy of jet-cooled polyatomic molecules." Thesis, University of Cambridge, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321031.

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31

O'Sullivan, Paul John. "Infrared diode laser spectroscopy of transient phosphorus-bearing molecules." Thesis, University of Cambridge, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.613757.

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32

AL-SHADEEDI, AKRAM. "LATERAL AND VERTICAL ORGANIC TRANSISTORS." Kent State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=kent1492441683969202.

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33

Tai, Feng-i. "Photochromic molecules in polymer switch diodes." Thesis, Linköping University, Department of Science and Technology, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-6810.

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<p>Photochromism has been investigated extensively during recent years. The large interest for information storage in memory applications is associated with the bi-stable character of the photochromism phenomena. In molecular photochromics, two isomers with different absorption spectrum can be obtained according to the specific wavelength of the light exposure. This reversible transformation process can be considered as optical writing/erasing step of a memory.</p><p>Here we first report the absorption spectra of solid-state films based on the blends consisting of PC molecules, the spirooxazin

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34

Tai, Feng-I. "Photochromic molecules in polymer switch diodes." Thesis, Linköpings universitet, Institutionen för teknik och naturvetenskap, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-6810.

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Photochromism has been investigated extensively during recent years. The large interest for information storage in memory applications is associated with the bi-stable character of the photochromism phenomena. In molecular photochromics, two isomers with different absorption spectrum can be obtained according to the specific wavelength of the light exposure. This reversible transformation process can be considered as optical writing/erasing step of a memory. Here we first report the absorption spectra of solid-state films based on the blends consisting of PC molecules, the spirooxazine 1,3-dih

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35

Worthing, Philip Thomas. "Molecular fluorescence from microcavities." Thesis, University of Exeter, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302668.

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36

Trasobares, Sánchez Jorge. "High frequency electronics on nanodot molecular junctions : interaction between molecules, ions and waves." Thesis, Lille 1, 2015. http://www.theses.fr/2015LIL10168/document.

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Une combinaison entre l’assemblage de monocouches au sommet de nano-cristaux d’or et la microscopie à sonde locale permet d’explorer l’interaction entre les molécules actives et son milieu, mais aussi démontrer expérimentalement une diode moléculaire peut travailler à haute fréquence. La fabrication des nanocristaux d’or par lithographie électronique rapide nous a permis leur caractérisation par des techniques nécessitant des surfaces millimétrique, mais également par des techniques en champ proche. La détection electrochimique d’un petit nombre de molécules par nanocrystal prévoit d’intéressa

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37

Selvaranjan, Selvadurai. "Processable molecular lanthanide chelates for organic light emitting diodes (OLEDs)." Thesis, London South Bank University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.618667.

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38

Bell, I. S. "Novel phosphorus-bearing transient molecules studied by infrared diode laser spectroscopy." Thesis, University of Cambridge, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.596544.

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Studies of the reaction of white phosphorus vapour with oxygen are of considerable fundamental and practical interest. The reaction produces an intense chemiluminescence, although the identity of the emitting species has been controversial. In the experiments reported in this thesis, the phosphorus glow has been probed directly using infrared diode laser absorption spectroscopy to detect some of the transient intermediates present. The introductory chapter presents a review of the advantages of using lasers over conventional sources as spectroscopic tools. Lasers output light of a monochromati

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39

Collet, Tim David [Verfasser], and J. [Akademischer Betreuer] Schmalian. "Electronic transport through correlated nanostructures: molecular diodes and steady state currents = Elektronischer Transport durch korrelierte Nanostrukturen: molekulare Dioden und Ströme in stationären Zuständen / Tim David Collet. Betreuer: J. Schmalian." Karlsruhe : KIT-Bibliothek, 2014. http://d-nb.info/1063027500/34.

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40

Kleemann, Hans. "Organic Electronic Devices - Fundamentals, Applications, and Novel Concepts." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-105059.

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This work addresses two substantial problems of organic electronic devices: the controllability and adjustability of performance, and the integration using scalable, high resolution patterning techniques for planar thin-film transistors and novel vertical transistor devices. Both problems are of particular importance for the success of transparent and flexible organic electronics in the future. To begin with, the static behavior in molecular doped organic pin-diodes is investigated. This allows to deduce important diode parameters such as the depletion capacitance, the number of active dopan

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41

Qian, Haibo. "Diode laser spectroscopy of free radicals and other transient molecules in the gas phase." Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.627118.

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42

Chau, Nga Yuen. "Molecular design, synthesis and luminescent properties of new functional metallophosphors of iridium (III) and platinum (II)." HKBU Institutional Repository, 2015. https://repository.hkbu.edu.hk/etd_oa/220.

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Organic light-emitting diode (OLED) technology has found multitudinous applications in the development of solid-state lighting, flat-panel displays and flexible screens. Nowadays, the phosphorescent OLEDs based on metallophosphors can reach sufficiently high efficiencies for practical application. Recently, red, green and blue (RGB) platforms of highly efficient phosphorescent emitters have been achieved and OLEDs TV is now commercialized in the marketplace. However, the design and synthesis of innovative emitter materials play an important role in commercialization of the OLED technology. Th

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43

Matta, Samuel. "AlGaN quantum dots grown by molecular beam epitaxy for ultraviolet light emitting diodes." Thesis, Montpellier, 2018. http://www.theses.fr/2018MONTS042/document.

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Ce travail porte sur la croissance par épitaxie sous jets moléculaires (EJM) et sur les propriétés structurales et optiques de boîtes quantiques (BQs) AlyGa1-yN insérées dans une matrice AlxGa1-xN (0001). L’objectif principal est d’étudier le potentiel des BQs en tant que nouvelle voie pour la réalisation d’émetteurs ultraviolets (UV) efficaces.Tout d'abord, nous avons étudié la croissance des BQs GaN en utilisant soit une source plasma (N2, appelée PAMBE) soit une source ammoniac (NH3, appelée NH3-MBE) afin de choisir la meilleure approche pour former les BQs les plus efficaces. Il a été mont

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44

Jansson, Emil. "Electronicharacterization of molecules with application to organic light emitting diodes." Licentiate thesis, KTH, School of Biotechnology (BIO), 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4349.

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<p>The presented thesis is devoted to the field of organic light emitting</p><p>diodes (OLEDs). Time-dependent Kohn-Sham density functional theory</p><p>(TDDFT) is applied</p><p>in order to eludicate optical properties such as fluorescence and</p><p>phosphorescence for some of the most important materials. The</p><p>accuracy of TDDFT is evaluated with respect to the calculated absorption</p><p>and emission spectra for commonly used light emitting polymers.</p><p>A continuation of this work is devoted to Polyfluorene as this polymer</p><p>has proven to be very promising. In this study the chain

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45

Hauksson, Isak Sverrir. "Investigation of spontaneous and stimulated emission from ZnSe epilayers and ZnCdSe-ZnSe quantum well systems grown by molecular beam epitaxy." Thesis, Heriot-Watt University, 1996. http://hdl.handle.net/10399/749.

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46

Karabaeva, Kanykey E. "Photochemistry of Masked Pyrene-4,5-Dione." Bowling Green State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1371083757.

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47

Horne, Kyle S. "Nano-scale Thermal Property Prediction by Molecular Dynamics Simulation with Experimental Validation." DigitalCommons@USU, 2014. https://digitalcommons.usu.edu/etd/3089.

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Quantum cascade laser (QCL) diodes have potential applications in many areas including emissions analysis and explosives detection, but like many solid-state devices they suer from degraded performance at higher temperatures. To alleviate this drawback, the thermal properties of the QCL diodes must be better understood. Using molecular dynamics (MD) and photothermal radiometry (PTR), the thermal conductivity of a representative QCL diode is computed and measured respectively. The MD results demonstrate that size eects are present in the simulated systems, but if these are accounted for by norm

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48

Carnevale, Santino D. "Catalyst-free III-nitride Nanowires by Plasma-assisted Molecular Beam Epitaxy: Growth, Characterization, and Applications." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1374066626.

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49

Uejima, Motoyuki. "Theoretical Design of Light-Emitting Molecules Based on Vibronic Coupling Density Analysis." 京都大学 (Kyoto University), 2014. http://hdl.handle.net/2433/188601.

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50

Jansson, Emil. "Electronic characterization of molecules with application to organic light emitting diodes." Licentiate thesis, Stockholm : Theoretical Chemisty, School of Biotechnology, Royal Institute of Technology, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4349.

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