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Photogating effect as a defect probe in nanocrystalline silicon cells
(American Institute Of Physics, 2010-07)
The measurement of the spectrally resolved collection efficiency is of great importance in solar cell characterization. Under standard conditions the bias light is a solar simulator or a light source with a similar broadband ...
Experimental lab propose of different data acquisition techniques of time measurement in physics teachingProposta de atividade experimental de medida de tempo em laboratório de ensino de física
(2018-01-01)
It promotes an increase in the students' motivation when facing this new teaching-learning technique. In this paper, the active methodology has been applied to an experiment related to time measurement processes. The ...
Building a high quality photogate
(IOP Publishing LtdBristol, Reino Unido., 2019)
In this paper we present a method to construct a simple, sturdy and inexpensive photogate to be used in elementary physics laboratories. The great advantage of the proposed design is that it has no transmitter-receiver ...
Complemetary Photogating Effect in Microcrystalline Silicon n-i-p Structures
(Elsevier Science Sa, 2016-11)
Spectral responses above the unity at short wavelengths have not been yet reported in μc-Si:H based n-i-p devices illuminated with a red bias light. In solar cells this effect is known as the Complementary Photo-Gating ...
Modelado de curvas corriente tensión y respuesta espectral de celdas solares y sensores ópticos de película delgada
(2016-12-14)
En la presente tesis se estudia, a partir de diferentes aproximaciones, el modelado de curvas características corriente-tensión (I-V) y respuesta espectral (SR) para dispositivos de película delgada de silicio amorfo ...
Effectiveness of Photogem (R) activated by LED on the decontamination of artificial carious bovine dentin
(Springer, 2006-05-01)
The aim of this study was the evaluation of the effectiveness of photodynamic therapy on the decontamination of artificially induced carious bovine dentin, using Photoge(R) as the photosensitizer agent and an LED device ...
Effectiveness of Photogem (R) activated by LED on the decontamination of artificial carious bovine dentin
(Springer, 2006-05-01)
The aim of this study was the evaluation of the effectiveness of photodynamic therapy on the decontamination of artificially induced carious bovine dentin, using Photoge(R) as the photosensitizer agent and an LED device ...
Redesign de identidade visual da empresa Studio Enfoco
(Universidade Tecnológica Federal do ParanáCuritibaBrasilDepartamento Acadêmico de Desenho IndustrialDesign GráficoUTFPR, 2014-02-10)
This work refers to the redesign of the visual identity and the creation of a Visual Identity System for Studio Enfoco. Was presented, firstly, the methodology used to conduct the research and run the job. Next, was performed ...
Building a propeller based-microcontroller timer system
(IOP Publishing LtdBristol, Reino Unido., 2019)
In this work we construct a timer system consisting of both hardware and software to be used in introductory-level laboratory physics courses. The Parallax P8X32A propeller based-microcontroller hardware consist of a board ...