A5088677505- ZnO doping and properties
- Conducting polymers and applications
- Thin-Film Transistor Technologies
- Advanced Memory and Neural Computing
- Analytical Chemistry and Sensors
- Semiconductor materials and devices
- Silicon and Solar Cell Technologies
- Gas Sensing Nanomaterials and Sensors
- Transition Metal Oxide Nanomaterials
- Perovskite Materials and Applications
- Supercapacitor Materials and Fabrication
- Advanced Sensor and Energy Harvesting Materials
- Organic Electronics and Photovoltaics
- Electrochemical sensors and biosensors
- Olfactory and Sensory Function Studies
- Carbon Nanotubes in Composites
- Advancements in Semiconductor Devices and Circuit Design
- melanin and skin pigmentation
- Biochemical Analysis and Sensing Techniques
- Advanced Battery Materials and Technologies
- Electrochemical Analysis and Applications
- Polymer Nanocomposite Synthesis and Irradiation
- Molecular Junctions and Nanostructures
- Nanowire Synthesis and Applications
- VLSI and FPGA Design Techniques
Universidade Estadual Paulista (Unesp)
2016-2025
National Institute of Meteorology
2025
Hospital Regional de Presidente Prudente
2023
Faculdade de Tecnologia e Ciências
2021
Departamento de Ciência e Tecnologia
2019
The production of low cost sensors to monitor environment in some industrial sectors is a current need. In aviculture centers, for example, the concentration ammonia gas related humidity, and it necessary control avoid contamination. With this need mind, paper presents preparation characterization humidity sensor based on poly(3,4-ethylenedioxythiophene)-poly(styrene sulfonate) polyaniline fully printed onto by commercial HP printer. Using electrochemical impedance spectroscopy, an...
Bioderived and biodegradable electronics have the capability to reduce significantly waste electrical equipment (WEEE) can also be applied other sectors, where degradation benign by-products is essential, such as marine, farming, or health monitoring. Herein, authors report thin-film transistors (TFTs) arrays based on zinc oxide (ZnO) active layer using molybdenum (Mo) source, drain, gate electrodes. The developed TFTs were fabricated at room temperature onto a planarized substrate surface...
Abstract Proposals for new architectures that shorten the length of transistor channel without need high‐end techniques are focus very recent breakthrough research. Although vertical and electrolyte‐gate transistors previously developed separately, advances have introduced electrolytes into transistors, resulting in electrolyte‐gated field‐effect (EGVFETs), which feature lower power consumption higher capacitance. Here, EGVFETs employed to study charge transport mechanism spray‐pyrolyzed...
For the first time, this article shows how it is possible to make well-soluble poly(fullerene xylene)s using potassium iodide and in low amounts of solvents. This new method makes use low-cost, environmentally friendly starting materials, nonchlorinated solvents, main-chain C60, PCBM, for C70, polymers. The reaction can even be performed presence water, further increasing its environmental friendliness. Specifically, a dibromomethylated comonomer, such as...
Perovskite solar cells (PSCs) have emerged as a promising photovoltaic technology, already achieving efficiencies surpassing 25%. However, effects such hysteresis are commonly observed due to the interplay of ionic and electronic transport occurring over different timescales. Despite widespread use impedance spectroscopy (IS), physical interpretation in PSCs is specially challenging memory effects. In this study, we focus on integrating experimental data with an analytical device model. The...
Here we present the study of supercapacitors based on molybdenum disulfide and poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (MoS2/PEDOT:PSS) composite electrodes deposited by spray-coating. To produce MoS2/PEDOT:PSS ink, dispersions hydrothermally synthesized MoS2 PEDOT:PSS were mixed in different weight proportions. Electrodes containing only also fabricated for comparison. The films transferring as-prepared inks to an airbrush coupled a modified 3D printer base with in-line...
PMMA:MXene passivates a perovskite/ETL interface boosting performance and stability. Less interfacial defects increase the charge lifetime resulting in higher density of photo-generated carriers.
The printed electronics presents the outstanding proposal to produce low-cost, solution-processable, vacuum-free and flexible devices. In this context, many researchers have been made efforts obtain memories that works with low voltage bias, high on/off ratio storage stability. Here, we report a novel low-cost version of memristor based on spray coated films indigo colloidal graphite. This memory showed performance for memristors, being most remarkable aspect device its <inline-formula...
Few works on solution-processed zinc oxide vertical transistors and electrolyte-gated have shown the merits of both architectures. Here, we present an field-effect transistor (EGVFET) based a spray-deposited oxide/silver nanowire (ZnO/AgNW) Schottky contact. The output curve shows that device operates at sub-1 V bias. Also, electrolyte does not affect diode cell, cyclic voltammetry capacitor cell indicate faradic process between AgNW top-gate electrode. From transfer curve, extracted...
Here we report the production and characterization of a low-cost supercapacitor with electrodes based on colloidal graphite. We characterized as-prepared device in terms cyclic voltammetry (CV), Galvanostatic charge/discharge (GCD), impedance spectroscopy. The exhibited good electrochemical performance high capacitance 22 F g-1 for discharge current 2 mA. Long-term cyclability tests show that can keep about 85% its after 500 cycles, even without encapsulation. found power energy densities...
Abstract Laser induced graphene (LIG), prepared directly with an in situ synthesis method onto Kraft Paper substrates, is proposed for the manufacture of biodegradable electronic devices. The investigation explores influence laser power and scanning speed on properties LIG conductive tracks a sheet resistance up to 0.25 kΩ sq−1. Raman spectroscopy microscopy used analyse interfacial properties, particular transition cellulose fibers carbonized flakes through photothermal pyrolysis, leading...
Despite the remarkable progress in emerging solar cell technologies such as hybrid organic-inorganic perovskites, there are still significant limitations related to stability of devices and their non-ideal electrical behavior under certain external stimuli. We present a conceptual framework for characterizing photovoltaic by integrating cyclic voltammetry (CV) impedance spectroscopy (IS). This is constructed from microscopic, multi-mode perspective that explicitly accounts drift, diffusion,...