A5076257391- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Nanocluster Synthesis and Applications
- Advanced biosensing and bioanalysis techniques
- Gold and Silver Nanoparticles Synthesis and Applications
- Photonic Crystals and Applications
- Advanced Semiconductor Detectors and Materials
- Advanced Biosensing Techniques and Applications
- Analytical Chemistry and Sensors
- Molecular spectroscopy and chirality
- Advanced Photonic Communication Systems
- Carbon and Quantum Dots Applications
- Anodic Oxide Films and Nanostructures
- Photonic and Optical Devices
ITMO University
2018-2022
Federal Institute For Materials Research and Testing
2022
Ternary quantum dots (QDs) are very promising nanomaterials with a range of potential applications in photovoltaics, light-emitting devices, and biomedicine. Despite quite intensive studies ternary QDs over the last years, specific relaxation channels involved their emission mechanisms still poorly understood, particularly corresponding core-shell nanostructures. In present work, we have studied recombination pathways AgInS2 stabilized ZnAgInS alloy layer ZnS shell (AIS/ZAIS/ZnS QDs) using...
Binary photoluminescent semiconductor nanocrystals (quantum dots, QDs) are one of the best studied fluorescent nanomaterials, and their unique optoelectronic properties paved road to many applications in (bio)nanophotonics, optoelectronics, photovoltaics. However, concerns related toxic constituents like cadmium or lead emerging interest greener chemistry synthesis approaches hamper future applicability. Interesting alternatives for some biosensing bioimaging heavy-metal-free ternary QDs...
Doping the semiconductor nanocrystals is one of most effective ways to obtain unique materials suitable for high-performance next-generation optoelectronic devices. In this study, we demonstrate a novel nanomaterial near-infrared spectral region. To do this, developed partial cation exchange reaction on HgTe nanoplatelets, substituting Hg cations with Pb cations. Under optimized conditions and precursor ratio, photoluminescence band shifts ~1100 nm quantum yield 22%. Based steady-state...
Here we report on the development and investigation of a novel multiplex assay model based polymer microspheres (PMS) encoded with ternary AIS/ZnS quantum dots (QDs). The system was prepared via layer-by-layer deposition technique. Our studies Förster resonance energy transfer (FRET) between QD-encoded two different cyanine dyes have demonstrated that QD photoluminescence (PL) quenching steadily increases decrease in QD-dye distance. We found sensitized dye PL intensity demonstrates clear...
Abstract Here we report investigation of red-shifted defect photoluminescence observed in two-dimensional colloidal cadmium selenide nanoplatelets. We used absorption, and excitation measurements to show that bands are related directly nanoplatelets may originate from surface imperfections as well be a result interaction between different the solution. also found easily altered by simple mechanical treatment, including sonication stirring, thus disclosing ways control emission over time.
Magnetic circular dichroism (MCD) spectra were measured for colloidal CdSe/CdS core-wing nanoplatelets (NPLs).MCD of CdSe cores demonstrate well resolved features which could be attributed to excitonic transitions from heavy hole, light hole and split-off sublevels.A1/D0, B0/D0 MCD characteristic terms determined.The values A1/D0, have no dependence on NPL thickness are very close the corresponding in organic molecules.