After the introduction of carbazole-based organic semiconductors forming self-assembled monolayer, such as 2PACz or MeO-2PACz, an important step forward in the research area of inverted perovskite solar cell was made. However, further research, in which attempts were made to completely or at least partially replace the toxic lead used in perovskite with tin, demonstrated that these compounds are not the best choice for constructing devices of this type. In the search of new and more efficient self-assembling monolayer analogues, an ionic 4PACz compound alternative cotaining two ammonium bromide functional groups in its structure was synthesized and introduced. Due to dual interaction this compound demonstrated particularly good efficiency in lead-tin perovskite solar cells and not so long after was commercialized (by Tokyo Chemical Industry), demonstrating the importance and relevance of such ionic compounds and this concept in general. Therefore, during this summer internship, ionic organic compounds capable of forming self-assembled monolayers of the aforementioned type will be synthesized, at the same time learning to perform all the main steps related to the synthesis of organic compounds and the characterization of the obtained materials.
Period of project implementation: 2026-07-01 - 2026-08-31
Project coordinator: Kaunas University of Technology
