Description
An OSCs consist of multilayers with many materials, it is hard to fully understand the stability limiting factors. At the interface, the different materials (metals, organic molecules, etc.) come together, making them prone to degradation. Previously, our group investigated a fluorine accumulation at a molybdenum-oxide/aluminum (MoO3/Al) interface of a non-fullerene organic tandem solar cell containing a fluorinated donor polymer and an Al-containing recombination layer [1]. We expect a defluorination of the active layer materials and diffusion of the fluorine species to the interface. Recently, Yoon et al. found that Al and silver (Ag) atoms from the electrodes diffuse into the active layer. Consequently, the diffused Al atoms interact strongly with nitrogen, sulfur, and fluorine from the active layer materials, changing the chemical environment [2]. So, currently, we are investigating material combinations affected by dehalogenation reactions and their consequences on OSC performance using various characterization techniques, including electron microscopy.[1] Hoefler et al., Adv. Mater. Interfaces 6 (2019), 1901053.
[2] Yoon et al., Adv. Funct. Materials (2023), 2308618.
| Period | 26 Aug 2024 |
|---|---|
| Event title | International Conference on Functional Nanomaterials and Nanodevices 2024: NANOMAT 2024 |
| Event type | Conference |
| Location | Wien, AustriaShow on map |
| Degree of Recognition | International |