Lead Iodide
Mostrando 1-12 de 23 artigos, teses e dissertações.
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1. Hybrid MAPbI3 Perovskite Growth Mechanism from Irregular Particles to Cuboid and Hopper-Type Morphologies
Methylammonium lead iodide (MAPbI3), used as light-harvesting layer in solar cell devices, has attracted great attention from scientific community due to its excellent photovoltaic performance. In this work, we have shown a comprehensive study on the hybrid organic-inorganic MAPbI3 perovskite growth mechanism from irregular small particles to cuboid shape fo
Journal of the Brazilian Chemical Society. Publicado em: 2022
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2. Development and Characterization of PbI2 Nanoparticles for all Solid-State Flexible Supercapacitor Purposes
The development and utilization of new energy sources has been extensively studied in the world. Here, we report the development of flexible self-supported metal-free electrodes based on non-oxidized graphene multilayer (MLG) paper containing the lead iodide nanoparticles (PbI2-NPs). The PbI2-NPs was obtained and characterized by X-ray diffraction (XDR) and
Mat. Res.. Publicado em: 20/05/2019
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3. Active caspase-3 detection to evaluate apoptosis induced by Verbena officinalis essential oil and citral in chronic lymphocytic leukaemia cells
Verbena officinalis L., Verbenaceae, commonly known as vervain, is a plant widely used in medicine. Despite of its widespread use in different traditional practices, the mechanisms of pharmacological actions of the plant and its volatile oil are still unclear. We evaluated the pro-apoptotic activity of V. officinalis essential oil and of its main component,
Revista Brasileira de Farmacognosia. Publicado em: 20/05/2011
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4. Fabricatins and Characterization of lead iodide films and mercury iodide crystals. / Fabricação e caracterização de filmes finos de iodeto de chumbo e cristais de iodeto de mercúrio
Nos últimos anos, acentuou-se o interesse em materiais semicondutores com alto número atômico e alto gap de energia para aplicações na detecção de radiação ionizante à temperatura ambiente, usando o método direto de detecção. Este trabalho apresentara as características de dois materiais semicondutores na forma de filme para o iodeto de chumbo
Publicado em: 2008
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5. Filmes finos de iodeto de chumbo como detector de raios-X para imagens médicas / Lead Iodide Thin Films as X-ray detectors for Medical Imaging
In the last few years, great interest has been focused to high atomic number and wide band gap semiconductor materials for applications in room temperature ionizing radiation detection using the direct detection method. Some materials such as PbI2, HgI2, TlBr, CdTe and CdZnTe are good photoconductors and can be used at room temperature. As a good candidate,
Publicado em: 2007
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6. Desenvolvimento de cristais baseados em iodeto de Césio para aplicação como detectores de radiação / Development of crystals based in cesium iodide for application as radiation detectors
Cintiladores inorgânicos com tempo de decaimento de luminescência rápido, densidade alta e boa produção de luz têm sido objeto de estudos para aplicações em física nuclear, física de energias altas, tomografia nuclear e outros campos da ciência e da engenharia. Cristais de cintilação baseados em iodeto de césio (Csl) são materiais que apresent
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/06/2006
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7. Stoichiometry, surface and structural characterization of lead iodide thin films
In this work we present the structural properties and stoichiometry analysis of thin films of lead iodide (PbI2). This material is a very promising semiconductor material for the development of X-ray detectors in digital medical imaging. An alternative deposition method called Spray Pyrolysis was used. We discuss the main advantages and limitations of the de
Brazilian Journal of Physics. Publicado em: 2006-06
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8. Growth of mercuric iodide crystals
Mercuric Iodide (HgI2) is a semiconductor candidate for the construction of X- and gamma-ray detectors for digital medical imaging due to its high atomic number (Z Hg = 80, Z I = 53). Also, HgI2 has a wide optical band-gap (2.13 eV) and high photon absorption coefficient for high-energy radiation. Different structures can lead to varying electrical and optic
Brazilian Journal of Physics. Publicado em: 2006-06
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9. Effects of bovine semen cryopreservation on sperm plasmatic, acrosomal, and mitochondrial membranes and chromatin structure using fluorescent probes / Efeitos da criopreservação do sêmen bovino sobre as membranas plasmática, acrossomal e mitocondrial e estrutura da cromatina dos espermatozóides utilizando sondas fluorescentes
The process of cryopreservation causes damages in the sperm cellular function which may lead to a reduction in fertility. New techniques to evaluate sperm viability may improve the process of semen evaluation. The present work was divided in two experiments. Experiment 1 aimed the development and validation of practical techniques with high repetibility for
Publicado em: 2005
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10. Desenvolvimento de eletrodos ion-seletivos : aplicação em sistema de detecção em FIA e estrategias para a melhoria do limite de detecção / Development of ion-selective electrodes: application in detection system of FIA and strategies for the improvement of detection limit
The present work describes the development of ion-selective electrodes for calcium, potassium, sodium and chloride to be employed in flow injection analyses and its application for the simultaneous determination in samples, as well as, the development of solid contact ionselective electrodes with detection limit in the nanomolar range. The preparation of ion
Publicado em: 2005
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11. Thin films of lead iodide (PbI2) produced by spray pyrolysis / Filmes finos de iodeto de chumbo (PbI2)produzidos por spray pyrolysis
Researchers in the whole world search alternative methods that minimize the time of deposition of thin films of promising semiconductor candidates for medical applications, such as X-rays detectors for digital radiography. Lead iodide (PbI2) has been among those as a good candidate for the fabrication of room temperature detectors. Other authors have fabrica
Publicado em: 2003
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12. Stress Corrosion Cracking of Zircaloy-4 in Halide Solutions: Effect of Temperature
Zircaloy-4 was found to be susceptible to stress corrosion cracking in 1 M NaCl, 1 M KBr and 1 M KI aqueous solutions at potentials above the pitting potential. In all the solutions tested crack propagation was initially intergranular and then changed to transgranular. The effect of strain rate and temperature on the SCC propagation was investigated. An incr
Materials Research. Publicado em: 2002-06