| Abstract [eng] |
Rising global energy consumption has led the scientific community to look for new ways to extract energy. For this reason, attention has been paid to renewable energy sources, of which solar energy has the biggest untapped potential. Silicon-based solar cells are currently the most widely used, but alternatives are being sought due to the high production costs. One of the possible alternatives is perovskite solar cells, which are distinguished by a simple manufacturing process and high efficiency of the device. These solar cells can be improved by modifying the molecular structure of the organic semiconductor used to construct these cells. In Master's final degree project, new organic semiconductors for the construction of perovskite solar cells are synthesized and characterized. New molecules containing carbazolyl chromophores were obtained from 3,6-dibromocarbazole via step-by-step synthesis. The results of the physical properties study proved that the compounds have a stable amorphous state and are thermally stable up to 350 °C. The study of optical and electrical properties showed that the synthesized carbazole derivatives have suitable properties for charge transfer in perovskite solar cells. The efficiency of the constructed solar cells with carbazole derivatives is distributed in the range between 14.19–20.06 %, while the reference compound spiro-OMeTAD shoved 20.25 % efficiency. In the final project, a technological production line was designed for one of the intermediate compounds and a reaction material balance was established. |
