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Modulation spectroscopy of van der Waals crystals at high hydrostatic pressures and axial pressures (within this topic we plan experimental studies of the electronic band structure for selected van der Waals crystals using modulation spectroscopy at high hydrostatic pressures and axial pressures; the research will be supplemented with absorption and photoluminescence measurements; the research will be conducted for both bulk crystals and single layers of van der Waals crystals).
Investigation of the carriers dynamics in perovskites using photo-induced microwave reflection (within this topic, measurements of the dynamics of photo-induced microwave reflection are planned for perovskite materials (MAPI, FAPI and others) obtained at various synthesis conditions; in order to understand the processes of radiative and non-radiative recombination, these studies will be supplemented by measurements of photoluminescence, absorption and others; research conducted under the OPUS 17 grant from the NCN).
Investigation of physical phenomena at the liquid/semiconductor interface (within this subject, it is planned to: investigate the location of the Fermi level at the liquid/semiconductor interface using contactless electro-reflectance and photo-reflectance; study photochemical phenomena at such a junction, i.e. water splitting or splitting of CO2 molecules; the following systems will be tested: liquid/GaN, liquid/graphene/GaN, liquid/ h-BN/GaN and others; the research will be carried out under the OPUS 15 grant from the NCN;).
Photo-conductivity in excitonic semiconductors (excitons as neutral quasiparticles do not participate in the conductivity of the current, but a non-zero photocurrent is observed in exciton semiconductors; photo-conductivity in this type of crystals will be studied in the framework of this topic; the studied samples will be monolayers of van der Waals crystals , two-dimensional perovskites and other materials; photocurrent studies will be carried out directly by photocurrent spectroscopy and with the photo-induced microwave reflection).
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