html site templates

Research topics

Mobirise

Hybrid perovskites for photovoltaics

Currently, there is considerable attention on hybrid perovskites due to their potential for photovoltaic applications. The presence of organic component in hybrid perovskites opens a route towards relatively simple chemical and structural variation, that in its turn allows to fine tune selected physical properties of the proposed materials. In our team we develop new hybrid organic-inorganic perovskites by introducing different organic cations, which can provide the resulting framework with some specific functionalities. For example, by introduction of small aziridinium cation we managed to obtain a series of very rare semiconducting 3D perovskites of general formula (AzrH)PbHal3. Besides, a series of chiral hybrid perovskites incorporating chiral amino acids was developed in our team. 

Mobirise

Spin-crossover switches 

The rational choice of ligands and design of complexes allows to obtain new compounds that are able to undergo transition between the low-spin and the high-spin states under the influence of various external factors such as temperature or pressure, effect of guest molecules, light irradiation or magnetic field. The spin transition is followed by a drastic change of magnetic, electrical, mechanical, optical and other physical properties of materials. This effect allows to develop multifunctional switches which are based on SCO complexes. In our team we specialize on the development of new SCO complexes with various transition characteristics and exploration of different ways of their practical application.

Mobirise

Smart microwave materials

One of the challenges of today's industries that utilize radiofrequency radiation is the development of efficient reconfigurable components that can be tuned to support variable frequency bands and communication standards. In our team we develop new materials for effective radiofrequency radiation tuning by means of temperature induced phase transitions. For example, we have hown the ability of FeII spin-crossover complexes, hybrid organic-inorganic perovskites which exhibit crystallographic phase transitions and VO2-based polymer composites to tune radiofrequency radiation.

Mobirise

Functional chiral materials 

One of the scientific directions, realized in our team, is development of new chiral compounds and materials. Breaking of the spatial parity of the system and can provide a material with physical properties associated with chirality like circular dichroism, nonlinear optical responses, ferroelectricity and other. For example, introduction of chiral anions into spin-crossover complexes or chiral cations into hybrid perovskites allowed us to obtain new compounds with molecular asymmetry. Obtained chiral spin-crossover materials are characterized by switchable circular dichroism and can be potentially integrated into various photonic devices operating in UV and visible regions. Chiral perovskites, on their turn, can be potentially applied for fabrication of circularly polarized LEDs and 3D displays, as circularly polarized light photodetectors, for bioresponsive imaging, etc.