Organic Light Emitting Devices Oleds
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. Supramolecular Approach in Energy Conversion Devices
This review summarizes investigations carried out at the Laboratory of Photochemistry and Energy Conversion (LFCE) in the University of São Paulo dealing with design and characterization of ruthenium(II), rhenium(I) and iridium(III) polypyridine complexes with desired photochemical and photophysical properties in light of the development of optoelectronics
J. Braz. Chem. Soc.. Publicado em: 2020-11
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2. Improvement of power efficiency of hybrid white OLEDs based on p-i-n structures
ABSTRACT In this article, hybrid white organic light-emitting diodes (WOLEDs) under p-i-n structures have been investigated in terms of power efficiency. By using tris(8-hydroxy quinolinato) aluminum (Alq3) doped with 8-hydroxy-quinolinato lithium (Liq) as an n-type and WHI112 doped with molybdenum trioxide (MoO3) as a p-type, the typical device structure of
Matéria (Rio J.). Publicado em: 05/03/2018
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3. A importância do estado excitado 3MLCT de compostos de Ru(II), Re(I) e Ir(III) no desenvolvimento de fotossensores, oleds e fotorredução de CO2
The photochemistry and photophysics of coordination compounds have been extensively investigated not only because their structure, stability, reactivity dependence on the metal center oxidation state and the coordinated ligand; but also for their electronic transitions in a wide range of visible radiation. The knowledge of light absorption, excited state dea
Quím. Nova. Publicado em: 2017-02
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4. Low cost UV-Ozone reactor mounted for treatment of electrode anodes used in P-OLEDs devices
Abstract Low cost UV-Ozone reactor using a high pressure mercury vapor lamp of 80 watts without outer bulb showed good results for treatment of ITO films used as anode electrode in the assembly of P-OLED (polymer-organic light emitting diode) devices. This study revealed 20 minutes as effective treatment time and it was verified also that the effect of UV-Oz
Polímeros. Publicado em: 22/08/2016
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5. Propriedades optoeletrônicas de interfaces híbridas metal/semicondutor orgânico preparadas por deposição assistida por feixe de íons (IBAD) / Optoelectronic properties of interfaces hybrid metal / organic semiconductor prepared by ion beam assisted deposition (IBAD)
In this work, optoelectronic properties from organic light emitting devices (OLEDs), based on conjugated polymers with metallic cathode, which were deposited by ion beam assisted deposition technique (IBAD) were studied. The main objective of this work is to produce a hybrid non abrupt metal/polymer interface and to study its effects on electron injection. T
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/07/2011
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6. ESTUDO DAS PROPRIEDADES ELETROLUMINESCENTES DE NOVOS COMPLEXOS TETRAKIS BETA-DICETONATOS DE EURÓPIO UTILIZADOS EM OLEDS / INVESTIGATION ON ELECTROLUMINESCENT PROPERTIES OF NOVEL TETRAKIS BETA-DIKETONATE COMPLEXES USED IN OLEDS
Rare-earth complexes present extremely sharp line emission making possible to use them in organic light-emitting devices (OLEDs) technology. This dissertation reports the study of three europium tetrakis beta-diketonate complexes: Li[Eu(dbm)(4)].(4)H(2)O, TMPip[Eu(dbm)(4)] and Morf[Eu(dbm)(4)]. UV-Vis absorption, photoluminescence (PL) and cyclic voltammetry
Publicado em: 2010
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7. Study of organic light-emitting devices using rare earth and transition metals complexes. / Estudo de dispositivos orgânicos emissores de luz empregando complexos de terras raras e de metais de transição.
This work presents the study of the Rare Earth (RE) and Transition Metals (TM) complexes, as emissive layers of Organic Light-Emitting Devices (OLEDs) designed, built and electro-optically characterized. The thin films were thermally evaporated or spin-coated. This research started with the study of Europium complex changing its central ligand (CL), which sh
Publicado em: 2008
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8. Síntese, caracterização e aplicação de polímeros conjugados derivados de ferroceno e de bisfenol-A / Synthesis, characterization and application of conjugated polymers derived from ferrocene and bisphenol-A
Owing to the current interest in organometallic polymers and their applications, a group of conducting polymers containing ferrocene in the main chain was synthesized aiming the study of their magnetoresistive, magneto-optic and redox properties. The following polymers were prepared via McMurry method: poly(1,1-ferrocenylenevinylene) (PFV) and poly[1,1-ferro
Publicado em: 2008
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9. Síntese de poli(p-fenilenovinileno)s alcoxilados e sua aplicação em diodos emissores de luz e em sensores de gases / Synthesis of alkoxylated poly(p-phenylenevinylene)s and their application in light emitting diodes and in gas sensors
The present work describes the electrosynthesis of three polymers of the poly(p-phenylenevinylene) (PPV) family, having at least one long chain alkoxy group as substituent. These polymers were characterized by spectroscopic analyses (1H NMR, IR and UV-Vis), thermogravimetry (TG), size exclusion chromatography (SEC), cyclic voltammetry and electrically by cur
Publicado em: 2006
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10. EVOLUTIONARY SYNTHESIS IN NANOTECHNOLOGY / SÍNTESE EVOLUCIONÁRIA EM NANOTECNOLOGIA
The first Nanotechnology concepts were introduced by the American physicist Richard Feynman in 1959, in his famous lecture entitled There´s plenty of room at the bottom. Computational Intelligence has been successfully used in various areas in the academic and industrial worlds. This work investigates the potential of Genetic Algorithms in the optimization
Publicado em: 2006
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11. PRODUÇÃO E CARACTERIZAÇÃO DE DISPOSITIVOS ORGÂNICOS ELETROLUMINESCENTES (OLEDS) BASEADOS EM COMPLEXOS SUPRAMOLECULARES / PRODUCTION AND CHARACTERIZATION OF ORGANIC LIGHT EMITTING DEVICES (OLEDS) BASED ON SUPRAMOLECULAR COMPLEXES
Neste trabalho são apresentados os resultados da produção e caracterização de novos dispositivos orgânicos eletroluminescentes (OLEDs), que podem ser divididos idealmente em três grupos. O primeiro composto pelos OLEDs que utilizam os distirilbenzenos (DSBs) como camada eletroluminescente. Os DSBs são sistemas utilizados em química supramolecular co
Publicado em: 2006
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12. Correlation between luminescence polarization and molecular orientation in conjugated polymers / Correlação entre polarização da luminescência e orientação molecular em polímeros conjugados
The main goal of this work is the understanding of intermediated energy relaxation processes that are governed by Energy Transfer. Such processes strongly affect the optical properties of conjugated polymers, reducing the emission efficiency and the life time of OLEDs. We study specifically the polymer poly(p-phenylene vinylene), PPV, synthesized through the
Publicado em: 2006