Contacts
Intranet
SK
International
| Príprava BZT keramiky konvenčným spekaním a spekaním pomocou pulzného elektrického prúdu | |
| Preparation of BZT ceramic with conventional and pulse electric current sintering technique | |
| Program: | Mobility |
| Project leader: | Ing. Puchý Viktor, PhD. |
| Duration: | 1.1.2021 – 31.12.2022 |
National
| ADHEC – Nové vysokoentropické keramické materiály pre pokročilé aplikácie | |
| New high-entropy ceramic materials for advanced applications | |
| Program: | SRDA |
| Project leader: | prof. RNDr. Dusza Ján, DrSc. |
| Duration: | 1.8.2020 – 30.6.2024 |
| WLEDMat – Nové sklené a sklokeramické fosfory na báze hlinitanov vzácnych zemín pre aplikácie v pevnolátkových energiu šetriacich svetelných zdrojoch vyžarujúcich biele svetlo (pc-WLED diódy). | |
| Novel glass and glass-ceramic rare-earth aluminates-based phosphors for energy-saving solid state lighting sources emitting white light (pc-WLEDs). | |
| Program: | SRDA |
| Project leader: | doc. RNDr. Lofaj František, DrSc. |
| Annotation: | The project is focused on research and development of novel glass and glass-ceramic rare-earth aluminatesbasedluminescent materials for white light-emitting diodes (pc-WLED), especially materials with efficient redemission, which could improve CRI index compared to the known commercially produced phosphors. Phosphorswill be prepared in the form of glass microbeads. The structure of undoped alumninate glasses in the systemAl2O3-RE2O3 will be studied by spectroscopic methods. Thermal properties and kinetics of crystallization will bealso studied. In order to preparer glass-ceramics materials with required properties, the conditions ofcrystallization process will be investigated and optimized. Photoluminescence properties of glass and glassceramicrare-earth and transition metal ions doped materials will be studied in detail. Special attention will bepaid to study of relations between luminescent properties of materials and their structure and morphology. Infinal stage of the project, the composite PiG materials (Phosphor in Glass) will be prepared and characterized asthin plates suitable for direct application onto excitation LED chip. A LED diode emitting white light/warm whitelight will be contracted using the LED chip with suitable excitation wavelength in the NUV spectral range andprepared PiG composite with optimised thickness, so that optimal emission characteristic will be achieved. |
| Duration: | 1.8.2018 – 31.7.2022 |
| eCHALCO – Štúdium procesov vyvolaných elektrónovým zväzkom a elektromagnetickým žiarením v chalkogenidových sklách | |
| Investigation of phenomena induced by electron beam and electromagnetic radiation in chalcogenide glasses | |
| Program: | SRDA |
| Project leader: | doc. RNDr. Lofaj František, DrSc. |
| Annotation: | e-CHALCO project aims to study the interaction of the electron beam and electromagnetic radiation withsurfaces of thin films from chalcogenide glasses. In this area, we have reported recently results that lead tofundamental understanding of the phenomena induced by local interaction of electric charge andelectromagnetic radiation with these materials. In this project, we plan to continue in more systematic and deeperstudy of the effects induced during local perturbation of these materials, which can lead to local deformation,change in the chemical composition, phase transitions and charge persistence and accumulation using the latestmicroscopic, spectroscopic and diffraction techniques. We also focus on the investigation of influence ofexperimental parameters such as charge deposition lattice period, accelerating voltage, layer thickness, andcomposition of glass for the observed effects. Opportunities to prepare mesoscopic and nanoscopic structureswill lead to new applications of these materials in nanotechnology, for example, in fabrication of nanoemitters, incatalysis and in fabrication of probes for scanning probe microscopy and in technologies for recording andstoring information. |
| Duration: | 1.8.2018 – 31.7.2022 |