CV Lattes
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Universidade Estadual Paulista (UNESP). Campus de Presidente Prudente. Faculdade de Ciências e Tecnologia (FCT) (Institutional affiliation for the last research proposal) Birthplace: Brazil
Graduated in Physics by Faculty of Sciences of Barretos (1984), Master (1987) and PhD (1992) in Applied Physics by the Institute of Physics of São Carlos, and postdoctoral by Bangor University, Wales, UK (2006-2007). He works in the Department of Physics, Faculty of the Science and Technology, FCT-UNESP (2010) and has experience in physics, with emphasis on dielectric materials and dielectric properties. Currently, he is dedicated to organic electronics and printed electronics, especially to the study of devices such as transistors (TFT), diodes, capacitors and their applications as sensors. (Source: Lattes Curriculum)
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ZnO thin films produced by the pyrolysis of zinc acetate dihydrate, sprayed on heated substrates, are naturally n-doped due to structural defects like oxygen vacancy, interstitial zinc, and others. Since the ZnO band gap is about 3.3 eV, ultraviolet radiation (UVR) photons can generate electron-hole pairs, increasing the number of electrons in the conduction band. These photo-generated el…
The development of inverter circuits represents one important research topics on organic electronics, since they are the building blocks for digital electronics. The production of flexible and printable circuits has been attracting even more attention due to its technological power on several applications, such as displays. The inverter circuits that exhibit the best performances and stab…
(Only some records are available in English at this moment)
The performance of printed electronics applications depends fundamentally on printing good diodes that are considered the "quintessential" element of electronics. This project proposes to study a hybrid Schottky diode prepared by the spray deposition technique, with structure PEDOT:PSS/ZnO/AZO, in which gold nanoparticles (AuNPs) are added to the ZnO film. The AC and DC characterization w…
Most electronic devices made of organic materials are fabricated using a thin film as a signal transducer element, whose structuring (supramolecular arrangement), in addition to the physical and chemical characteristics of the material itself, is a fundamental factor in the optical and electrical properties of the film and respective device. In this project thin films (nanometers thick) o…
Transistor is an element of great importance for electronics, being responsible for functions such as signal amplification and switching. In the context of the electronics alternative to silicon, there is a demand for transistors that can be printed, flexible, transparent, organic or obtained by organic precursors and that can be integrated into smart packaging, ornaments or clothing. In …
The flexible and printed organic electronics stands out in the technological development scenario. Its main applications are on large-area devices, with low processability temperature and low production cost. Furthermore, it is desirable to fabricate these devices using materials and methods compatible with printing techniques. Among the most utilized electronic components, the transistor…
Ultraviolet radiation (UVR) is beneficial for people's health, however, if the exposure is excessive it can cause diseases as, for instance, skin cancer. Brazil is one of the countries with the biggest skin cancer incidence in the world. For this reason, UVR sensor devices, printed on personal adornments or in clothing is very important. Zinc oxide (ZnO) is a semiconductor material widely…
Printed electronics presents great potential for sensors developing that can be manufactured directly in personal adornments, cards, packaging and others. Zinc oxide (ZnO) films, obtained by printing organic precursor solutions or by printing nanoparticles dispersion, have been widely studied as UV radiation and gas sensor. Among the various gases that can be detected by ZnO-based sensors…
(Only some records are available in English at this moment)
Recently, the electronics industry has transformed the world in such a way that its products have become essential to everyday life. On the other hand, the growing use of electronic devices and gadgets has increased the generation of electronic waste (e-waste). Thus, there is an urgent need to develop biodegradable electronic devices and components using techniques that also cause less da…
An interesting way to produce an UV sensor is integrating a diode and a transistor. However, if you want to fabricate this circuit without encapsulation, it's necessary use a blocking filter to prevent devices parameters change. Gallium oxide (Ga2O3) is an interesting material due its large bandgap of ~4.9 eV that makes it an ideal candidate for solar-blind devices and deep UV sensor. The…
Investments on the printed electronic area has been increased every year, but the development of all-printed logical circuits depends on the ability building thin film transistors (TFTs) successfully. In this context to achieve marketable printed electronic technologies, must be found ways to increase the long-term stability and lifetime of TFTs. Currently this is a critical issue. Thereb…
| 7 / 4 | Completed research grants |
| 3 / 3 | Ongoing scholarships in Brazil |
| 25 / 18 | Completed scholarships in Brazil |
| 1 / 1 | Ongoing scholarships abroad |
| 2 / 2 | Completed scholarships abroad |
| 38 / 28 | All research grants and scholarships |
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