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Dive into the research topics where A. D. Barros is active.

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Featured researches published by A. D. Barros.


Journal of Applied Physics | 2012

Ambipolar acoustic transport in silicon

A. D. Barros; P. D. Batista; A. Tahraoui; J. A. Diniz; P. V. Santos

We have investigated the ambipolar transport of electrons and holes by electrically generated surface acoustic waves (SAWs) on silicon wafers coated with a piezoelectric ZnO film. The transport experiments were carried out by using a focused laser beam to optically excite carriers. The carriers are then captured by the moving SAW piezoelectric field and then transported towards a lateral p-i-n junction, where they are electrically detected. The piezoelectric modulation modifies the current vs. voltage characteristics of the lateral p-i-n junction. This behavior is accounted for by a simple model for the change of the junction potential by the SAW fields. We demonstrate that electrons and holes can be acoustically transported over distances approaching 100 μm, the transport efficiency being limited by the low mobility of holes in the material. These results open the way for silicon-based acousto-electric devices using ambipolar transport such as photo-detectors and solar cells.


Microelectronic Engineering | 2010

Thin titanium oxide films deposited by e-beam evaporation with additional rapid thermal oxidation and annealing for ISFET applications

A. D. Barros; K.F. Albertin; Juliana Miyoshi; I. Doi; J. A. Diniz


Microelectronic Engineering | 2010

Titanium-aluminum oxynitride (TAON) as high-k gate dielectric for sub-32nm CMOS technology

Juliana Miyoshi; J. A. Diniz; A. D. Barros; I. Doi; A. A. G. von Zuben


symposium on microelectronics technology and devices | 2016

Electrolyte-insulator-semiconductor structure (EIS) with TiO 2 thin film for Pb + detecting

R. R. Cesar; A. D. Barros; I. Doi; J. A. Diniz; Jacobus W. Swart


XXIV Congresso de Iniciação Científica da UNICAMP - 2016 | 2016

Fabricação e caracterização de estruturas semicondutoras tensionadas através da técnica de espectroscopia Raman.

Lucas Barroso Spejo; A. D. Barros; J. A. Diniz


symposium on microelectronics technology and devices | 2015

Fabrication of 60 channel microelectrode arrays for future use with cultured neuronal networks

V. P. Gomes; A. D. Barros; J. B. D. Filho; S. Martinoia; A. Pasquarelli; Jacobus W. Swart


symposium on microelectronics technology and devices | 2014

Electrolyte-Insulator-Semiconductor field effect device for pH detecting

R. R. Cesar; A. D. Barros; I. Doi; J. A. Diniz; Jacobus W. Swart


symposium on microelectronics technology and devices | 2014

Thin titanium oxide films obtained by RTP and by sputtering

R. R. Cesar; A. D. Barros; I. Doi; J. A. Diniz; Jacobus W. Swart


Procedia Engineering | 2014

Electrolyte-Insulator-Semiconductor Structure for Pb+ Detecting

R. R. Cesar; A. D. Barros; R.O. Nascimento; Oswaldo Luiz Alves; I. Doi; J. A. Diniz; Jacobus W. Swart


Archive | 2013

Desenvolvimento de filmes finos de TiOx e ZnO para dispositivos ISFET e SAW

A. D. Barros; J. A. Diniz

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J. A. Diniz

State University of Campinas

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I. Doi

State University of Campinas

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Jacobus W. Swart

State University of Campinas

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Juliana Miyoshi

State University of Campinas

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R. R. Cesar

State University of Campinas

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A. A. G. von Zuben

State University of Campinas

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F. A. Cavarsan

State University of Campinas

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Ricardo Wada

State University of Campinas

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K.F. Albertin

University of São Paulo

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Oswaldo Luiz Alves

State University of Campinas

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