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| TECHAPHO – Ternárne chalkogenidové perovskity pre fotovoltaiku | |
| Ternary chalcogenide perovskites for photovoltaics | |
| Program: | SRDA |
| Project leader: | Ing. Chromik Štefan, DrSc. |
| Annotation: | The goal of the proposed project is the synthesis of ternary chalcogenides with perovskite structure and systematiccharacterization of the relationship between the composition, structure, optical properties, thermal and chemical stability with the potential in the application in photovoltaics, or other optoelectronics. The result will be a set of prepared pure ternary chalcogenides in the form of crystalline powders and thin films with known, as well as newly prepared compositions and a comprehensive characterization of their optical and electronic properties, as well as thermal and chemical stability. Ternary chalcogenides will be prepared also by wet approach at lower temperature up to 350 °C in the form of nanocrystals which will be characterized in terms of their structure and morphology.Proof-of-concept solar cell will be prepared, which has not yet been reported in the literature. The optimalization will be done based on performance measurements. |
| Duration: | 1.7.2024 – 30.6.2028 |
| PEROVCHIR – Vplyv aplikácie organických molekúl na vlastnosti perovskitovských tenkovrstvových štruktúr | |
| Effect of the application of organic molecules on the properties of perovskite thin-film structures | |
| Program: | SRDA |
| Project leader: | RNDr. Španková Marianna, PhD |
| Annotation: | In recent years, sufficient experimental evidence has accumulated that adsorbed organic chiral molecules affectthe superconducting properties of YBa2Cu3O7-x (YBCO) films. In some cases, an increase in their critical temperature Tc can be observed. On the other hand, it has been shown that in the case of ferromagnetic layers (e.g., cobalt), the application of chiral molecules can lead to a change in magnetization without the use of an electric current. An important role here is played by spin. Spin introduces an additional degree of freedom into the system, allowing devices, for example, to reduce electrical consumption or increase their computational capacity. Spintronic devices have become an attraction in electronics; however, problems associated with controlling spin remain a significant challenge. A unique way of manipulating spin is through the effect known as chirality-induced spin selectivity (CISS), which results from the specific structure of organic chiral molecules. The project focuses on the preparation and characterization of simple heterostructures and their interaction with chiral polymers deposited on the film surface. Specifically, it deals with the influence of chiral lactic acid on perovskite thin films, where the selected perovskites are high-temperature superconductor YBCO and ferromagnet La1-xSrxMnO3 (LSMO). |
| Duration: | 1.7.2024 – 31.12.2027 |