Growth Of Semiconductor
Mostrando 1-12 de 45 artigos, teses e dissertações.
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1. Semiconductor Nanocrystals-Reduced Graphene Composites for the Electrochemical Detection of Carbendazim
A new nanocomposite based on ZnCdTe semiconductor nanocrystals (NCs) synthesized in situ on reduced graphene oxide (rGO) was obtained. The heterostructure was characterized using UV-Vis emission and absorption spectroscopies, which provided evidences of the growth of the nanocrystals onto the rGO matrix. To evaluate the electrochemical performance, carbon pa
J. Braz. Chem. Soc.. Publicado em: 23/05/2019
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2. Low-intensity red and infrared laser effects at high fluences on Escherichia coli cultures
Semiconductor laser devices are readily available and practical radiation sources providing wavelength tenability and high monochromaticity. Low-intensity red and near-infrared lasers are considered safe for use in clinical applications. However, adverse effects can occur via free radical generation, and the biological effects of these lasers from unusually
Braz J Med Biol Res. Publicado em: 28/07/2015
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3. Crystallization of II-VI semiconductor compounds forming long microcrystalline linear assemblies
In this work we report the formation of long microcrystalline linear self-assemblies observed during the thin film growth of several II-VI compounds. Polycrystalline CdTe, CdS, CdCO3, and nanocrystalline CdTe:Al thin films were prepared on glass substrates by different deposition techniques. In order to observe these crystalline formations in the polycrystal
Mat. Res.. Publicado em: 01/02/2013
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4. Fabricação e caracterização de dispositivos baseados em nanofitas de Óxido de Estanho (SnO2)
The structural and transport features of tin oxide nanobelts synthesized by the vapor-solid method combined with the carbothermal reduction process were investigated in this work. The samples synthesized were characterized by using experimental techniques such as scanning and transmission electron microscopy and x-ray diffraction. The nanobelts were found to
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/08/2012
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5. Elaboração de indicadores bibliométricos a partir de patentes de nanotecnologia
The need to assign values to consumer and globalization have created a new format in the economy. These phenomena have increased investments in technology until the crisis of 1970 that generated a reduction in economic growth and consequently reduction in research funding. This context created resources that could gauge the areas that lacked development. One
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/02/2012
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6. Desenvolvimento do cristal semicondutor de iodeto de mercúrio para aplicação como detector de radiação / Development of the mercury iodide semiconductor crystal for application as a radiation detector
In this work, the establishment of a technique for HgI growth and preparation of crystals, for use as room temperature radiation semiconductor detectors is described. Three methods of crystal growth were studied while developing this work: (1) Physical Vapor Transport (PVT); (2) Saturated Solution of HgI2, using two different solvents; (a) dimethyl sulfoxide
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/07/2011
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7. Estudo da interação de nanotubos de carbono com substrato de quartzo cristalino
Single wall carbon nanotubes (SWNTs) are quasi-onedimensional structures consisting of a rolled up graphene nanoribbon. Due to their unusually large surface-to-volume ratio, SWNTs are strongly affected by the environment. Contact with a supporting substrate modifies their properties, and such interactions have been broadly studied as either a drawback or a s
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/03/2011
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8. Estudo de pontos quânticos auto-organizados de InAs por fotoluminescência
Semiconductor structures with high confinement degree, such as quantum wells, quantum wires and quantum dots, have been of great interest, both from the technological point of view and for basic research. Self-Assembled Quantum Dots (SAQD`s) appear spontaneously, as a consequence of the lattice mismatch of the material deposited in relation to the substrate,
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/02/2010
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9. Influence of drying on the characteristics of zinc oxide nanoparticles
The recent growth in the field of porous and nanometric materials prepared by non-conventional processes has stimulated the search of new applications of ZnO nanoparticulate. Zinc oxide is an interesting semiconductor material due to its application on solar cells, gas sensors, ceramics, catalysts, cosmetics and varistors. In this work, the precipitation met
Brazilian Journal of Physics. Publicado em: 2009-04
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10. Nanolitografia do silício utilizando o microscópio de força atômica / Silicon nanolithography using a atomic force microscope
The semiconductor industry is increasingly interested in the miniaturization of devices in the nanometer range. As the traditional techniques of lithography are reaching their limits growth the demand for new, including those that use equipment operating by probe, such as the atomic force microscope (AFM). One of the techniques that uses AFM on to produce na
Publicado em: 2009
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11. Propriedades eletrônicas de nanofios semicondutores / Electronic properties of semiconductor nanowires
We have performed an extensive study on the electronic and structural properties of silicon nanowires (NWs) using parameter free computational simulations (DFT). We show that in Si NWs, surfaces whose atoms are connected to inner ones perpendicularly to the wires axes become electronically inactive at the band edges. However, when these bonds are oriented al
Publicado em: 2008
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12. Metodologia Brazil-IP : registro do metodo e analise de casos de uso e experiencias ocorridas durante os trabalhos deste consorcio / The Brazil-IP methodology : the registration of this method and analysis of use cases and experiences ocurred along this consortium work
Contrary to the projections ofthe worldwide economy s growth rate, the semiconductor market, estimated in 270 billions of dollars, grows over 10% each year. The electronic components market in Brazil has been growing at the same rate and poses a huge payout for the country in this area, leading to efforts in semiconductor training. The Brazil-IP consortium,
Publicado em: 2008