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Universidade de São Paulo (USP). Instituto de Física (IF) (Institutional affiliation from the last research proposal) Birthplace: Brazil
A.A. Quivy graduated in 1986 and got his Master (1986) and PhD (1991) from Université Libre de Bruxelles (ULB, Belgium). He is a Professor at the Institute of Physics of the University of São Paulo (IFUSP, Brazil) since 1992, was a visiting scientist at Center for Quantum Devices (CQD) of Northwestern University (NU, USA) in 2005 and 2006, and is an Associate Professor at IFUSP since 2012. His main research topics are molecular beam epitaxy (MBE), and morphological, structural, optical and electrical characterization of III-V compounds (mainly arsenides). Lately, he has been investigating the growth, processing and testing of infrared photodetectors and solar cells based on quantum dots. (Source: Lattes Curriculum)
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In this project, we intend to optimize the growth conditions of InAs/GaAs submonolayer quantum dots (SMLQDs) formed in the presence of a (2´4) surface reconstruction at high temperature and arsenic flux to obtain nanostructures of better quality than in the literature. This will be done by modifying the large number of parameters involved in the deposition of SMLQDs and evaluating their …
In this proposal, we intend to install the setups of responsivity and noise measurements on QWIPs and QDIPs in order to fully characterize theses devices on the electrical and optical point of view. Combining these experimental data with computational simulations of the QWIPs and QDIPs properties that are being carried out at ITA in collaboration with Colonel Durante, together with the s…
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In this project, the student will continue and expand the research started during his master's degree with a scholarship from FAPESP. The main objective is to demonstrate the possibility of surpassing the conversion efficiency of a conventional single-junction solar cell, by inserting in the middle of the p-i-n junction some type of quantum dot that will be optimized during the project. …
In this project, Dr. Ahmad Al Zeidan will optimize a new technique for growing submonolayer quantum dots (SMLQDs) of InAs. The novelty consists in depositing the SMLQDs in the presence of a (2x4) surface reconstruction in order to nucleate two-dimensional (2D) InAs islands of good quality that are the building of blocks SMLQDs. However, instead of lowering the sample temperature to 500 °C…
The objective of this project is to continue the research started in the first PhD thesis of ourgroup (defended on 05/09/2023) related to the fabrication of photovoltaic cells based onInAs/GaAs quantum dots deposited by molecular beam epitaxy (MBE) on GaAs substrates. Wewill try to improve the solar cells recently developed in our group in two ways. The firstconsists in optimizing the str…
| 1 / 1 | Ongoing grants |
| 12 / 5 | Completed research grants |
| 2 / 2 | Ongoing scholarships in Brazil |
| 13 / 1 | Completed scholarships in Brazil |
| 28 / 9 | All research grants and scholarships |
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