Physical and technological principles of obtaining nanopowder ZnS:Mn, metallopolymers and heterostructures based on nanoporous silicon

• Applicant: Professor Dr. Valerii Kidalov
• Subject Area: Experimental Condensed Matter Physics
• Term: since 2023
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 529795573

The objectives of the project Influence of the magnetic field on luminescence of recombination centers of different nature in conditions of "limited" geometry are as follows: 1. Obtaining and studying the optical properties of ZnO and Ga2O3 films on Si substrates using an intermediate layer of SiC and a nanoporous Si layer by the method of RF magnetron sputtering. The formation of a SiC/porous-Si buffer layer on the surface of silicon will ensure the presence of a layer of unstressed silicon carbide in the structure, and will allow to obtain epitaxial films of ZnO and Ga2O3 on silicon. In addition, the SiC layer protects silicon from reacting with group 6 elements, so SiC/Si templates are ideal substrates for the growth of these semiconductors. The use of the SiC/porous-Si intermediate layer as templates will allow the integration of other wide-bandgap semiconductor materials SiC, GaN, AlN, MgO and AlN-SiC solid pseudosolutions into well-developed silicon electronics. 2. Obtaining micro- meso- and nanopowder ZnS:Mn by the method of self-propagating high-temperature synthesis and the study of optical and structural properties. The analysis of redistribution of the intensities of individual photoluminescence bands in meso- and nanopowder as compared with the bulk ZnS:Mn crystals. Consideration of a particle radiation model with a particle size less than double the length of the spatial charge region. 3. Obtaining new nanomaterials – metallopolymers and the study of their optical properties that can be used as emission layers in organic electroluminescent devices. The influence of a magnetic field on the splitting of neodymium and gadolinium photoluminescence bands will be studied.

• DFG Programme: WBP Position