A5082630020- Copper-based nanomaterials and applications
- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Electrochemical Analysis and Applications
- Electronic and Structural Properties of Oxides
- Analytical Chemistry and Sensors
- Semiconductor materials and devices
- Gas Sensing Nanomaterials and Sensors
- ZnO doping and properties
- Silicon Nanostructures and Photoluminescence
- Corrosion Behavior and Inhibition
- Semiconductor materials and interfaces
- Advanced Photocatalysis Techniques
- Thermography and Photoacoustic Techniques
- Magnesium Alloys: Properties and Applications
- Aluminum Alloys Composites Properties
- Advancements in Battery Materials
- Nanowire Synthesis and Applications
- TiO2 Photocatalysis and Solar Cells
- Anodic Oxide Films and Nanostructures
- Molten salt chemistry and electrochemical processes
- Radioactive element chemistry and processing
- Electron and X-Ray Spectroscopy Techniques
- Perovskite Materials and Applications
- Electrocatalysts for Energy Conversion
Center for Physical Sciences and Technology
2012-2024
Institute of Chemistry
1993-2010
Thermodynamic analysis of energy conversion from light-to-chemical, light-to-electric and electric-to-chemical is presented by the case study water photoelectrolysis on TiO(2) surface. It demonstrated that at current state-of-the-art efficiency can be increased approximately 17 times separating processes solar-to-electric optimizing them independently. This allows to mitigate a high overvoltage oxygen evolution reaction with respect thermodynamic E(0)(O(2)/H(2)O) = 1.23 V potential as well...
Cu2SnSe3 (CTSe) thin films were fabricated by selenization of a Cu-Sn alloy, which was electrochemically co-deposited from stirred citrate solution. Photoelectrical and optical properties the obtained CTSe investigated using only electrochemical (we applied cyclic voltammetry for determination band gap film semiconductor), photoelectrochemical impedance spectroscopy methods. New method is suggested, allows to estimate relationship between etching time secondary copper selenide phase...
Hafnium oxide (HfO2) films on silicon have the potential for application in photovoltaic devices. However, very little is known about photoelectrochemical and protective properties of HfO2 Si. In this study, ultrathin range 15-70 nm were deposited p-Si Au substrates by atomic layer deposition (ALD). Grazing incidence X-ray diffraction (GI-XRD) identified amorphous structure layers. Quartz crystal nanogravimetry (QCN) with Si indicated dynamics electrolyte intake into film. No indications...
A thin film (60–90 nm) of mixed-valence platinum sulfide (PtSM) has been successfully deposited on a fluorine-doped tin oxide substrate. An innovative method was developed to synthesize this in which Cd atoms were replaced by Pt within the bulk CdS layer prepared chemical bath deposition. The PtSM films analyzed various characterization techniques, such as Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and diffraction (XRD). analyses revealed that are mainly composed PtS, PtS2,...
The influence of surface treatment as-synthesized Cu2ZnSnS4 (CZTS) thin films on the photocurrent response in photoelectrochemical cell with Eu3+ contact has been studied. With our work we are first, to knowledge, show that order achieve maximal CZTS, dissolution copper sulfide a KCN solution and subsequent ZnS HCl is insufficient. An additional for only 10 s can results highest density. XPS, Mott-Schottky measurements reveal negatively charged layer surficial chlorides CZTS film. This was...
While silica is chemically stable in most acid electrolytes, its properties could significantly change due to electrolyte absorption. We demonstrate the photoelectrochemical and nanogravimetric features that allow identification of electrolytic transformation Si-SiO 2 interface. To end, photoresponsivity p-type silicon with ultrathin thermal oxide layer (10 nm) was studied. The responses were compared those hydrogen-terminated Si surface. quartz crystal nanogravimetry (QCN) characterized...
Investigations were made by quartz crystal microgravimetry into mass changes of zinc electrodes in a NaCl solution caused laser illumination (λ = 488 nm). The the dark electrode increases during oxygen corrosion, which is indicative accumulation corrosion products. A sudden increase oscillation frequency observed at beginning illumination. This also for gold electrode. effect warming insufficient to cause increase. rate light‐enhanced was estimated as difference between data obtained both...
Abstract Photoelectrochemical phenomena caused by laser illumination (λ = 488 nm) of zinc covered with an oxide layer in a naturally aerated 5% sodium chloride (NaCl) solution were investigated. Th...