Capacitance Voltage Analysis
Mostrando 1-12 de 17 artigos, teses e dissertações.
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1. Characterization of the Ge/Bi2O3 Interfaces
In this article, the properties of the Ge/Bi2O3 interfaces as microwave cavities are reported and discussed. The interface is composed of monoclinic Bi2O3 films grown onto polycrystalline cubic Ge substrate. It is observed that consistent with the theoretical design of the energy band diagram, the experimental current-voltage characteristics of the Yb/Ge/Bi2
Mat. Res.. Publicado em: 04/04/2019
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2. Espectroscopia de Impedância aplicada em Heterojunções para Células Solares Fotovoltaicas / Espectroscopia de Impedância aplicada em Heterojunções para Células Solares Fotovoltaicas
As propriedades elétricas das heterojunções de Alumínio/Silício-p monocristalino foram estudadas pela técnica de espectroscopia de impedância e análise de capacitância em função do potencial. Estas técnicas não são destrutivas, nem invasivas e conta com elevada precisão. Quando associadas a outras técnicas podem fornecer informações compree
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/04/2011
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3. Caracterização de filmes finos de óxido de silício depositados em um reator HD-PECVD a partir de TEOS a ultra baixa temperatura. / Characterization of silicon dioxide thin films deposited in a HD-PECVD reactor from TEOS at ultra low temperature.
This work reports on the results obtained from high-density plasma enhanced chemical vapor deposited silicon oxide films at ultra low temperature, i.e. 30°C, using TEOS vapor as the silicon source oxidized with assistance of argon. The objectives of this work are: first, understand the phenomena that conducts the chemical vapor deposition in high density re
Publicado em: 2007
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4. Lead telluride p-n junctions for infrared detection: electrical and optical characteristics
PbTe mesa diodes were fabricated from a series of p - n junctions grown on BaF2 substrates. For this series, the hole concentration was kept constant at 10(17) cm-3 and the electron concentration varied between 10(17) and 10(19) cm-3. Capacitance versus voltage analysis revealed that for n > 10(18) cm-3, a one-sided abrupt junction is formed. The direct and
Brazilian Journal of Physics. Publicado em: 2006-06
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5. NEW METHODOLOGY TO THE ESTIMATIVE OF CAPACITANCE AND POWER CONSUMPTION OF COMPLEX LOGIC GATES CMOS AT LOGIC LEVEL / NOVA METODOLOGIA PARA A ESTIMATIVA DE CAPACITÂNCIA E CONSUMO DE POTÊNCIA DE PORTAS LÓGICAS COMPLEXAS CMOS NO NÍVEL LÓGICO
This dissertation presents a methodology of capacitance estimation and power consumption in CMOS circuits combinational constituted basically of complex logic gates at logic level. The main objective in the development of this method is to provide a fast estimate of the power consumption of circuits at the logical design gates. Of this form, the considered m
Publicado em: 2005
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6. Characterization of PbTe p - n+ junction grown by molecular beam epitaxy
In this work we investigate the electrical properties of PbTe p - n+ junction. Mesa diodes were fabricated from p - n+ PbTe layers grown on (111) BaF2 substrates by molecular beam epitaxy. From the analysis of the current versus voltage characteristic measured at 80K, the incremental differential resistance and the series resistance were determined. The capa
Brazilian Journal of Physics. Publicado em: 2004-06
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7. Electrical characterization of PbTe p-n junctions for applicarion in infrared detectors. / Caracterização elétrica de junções p-n de PbTe para aplicação em detectores de infravermelho.
This work reports on the electrical characterization of PbTe p-n junctions for application in photovoltaic detectors in the medium infrared range. For this purpose, a series of p-n junctions, where the hole concentration p was kept at 1017 cm-3 and the electron concentration n varied between 1017 and 1019 cm-3, was successfully grown by molecular beam epitax
Publicado em: 2004
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8. Membrane Capacitance Measurements Revisited: Dependence of Capacitance Value on Measurement Method in Nonisopotential Neurons
During growth or degeneration neuronal surface area can change dramatically. Measurements of membrane protein concentration, as in ion channel or ionic conductance density, are often normalized by membrane capacitance, which is proportional to the surface area, to express changes independently from cell surface variations. Several electrophysiological protoc
American Physiological Society.
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9. Interfacial Photoreactions and Chemical Capacitance in Lipid Bilayers
The electrical response of a pigmented lipid bilayer to a short laser pulse is measured by a tunable voltage clamp method. In this method, a variable access impedance permits “tuning” of the observed relaxations for optimal measurements. Analysis of the data so obtained leads to an equivalent circuit that contains a novel chemical capacitance charged by
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10. Kinetics and components of the flash photocurrent of isolated retinal rods of the larval salamander, Ambystoma tigrinum.
1. Membrane currents initiated by intense, 20 microseconds flashes (photocurrents) were recorded from isolated salamander rods by combined extracellular suction electrodes and intracellular tight-seal electrodes either in current or voltage clamp mode. The magnitudes (mean +/- 2 S.E.M.) of the maximal photoresponses recorded by the suction and by the intrace
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11. ATP-dependent acidification and tonoplast hyperpolarization in isolated vacuoles from green suspension cells of Chenopodium rubrum L
The tonoplast of isolated vacuoles from photoautotrophic suspension cells of Chenopodium rubrum L. was studied by means of the patch-clamp technique. In a symmetrical K+ concentration of 46 mM, similar to in vivo conditions, the tonoplast displayed a membrane potential near zero and a linear current-voltage relationship with a mean slope of 1.0 S/m2. ATP at
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12. Experimental analysis of the relationship between charge movement components in skeletal muscle of Rana temporaria.
Experiments were performed to ascertain whether the monotonic (q beta) and delayed (q gamma) components of non-linear charge in skeletal muscle membranes form a sequential system, or are the result of separate, independent processes. The non-linear capacitance studied in a large number of fibres increased with fibre diameter. This dependence was attributable