Development of a water-stable membrane based on fluorinated polymers and quantum dots for optics and electronics
Tatiana G. Statsenko1,2, Dmitry S. Gets3, Sofia M. Morozova1,2,4;
1 - Moscow Institute of Physics and Technology, Dolgoprudny, Russia;
2 - Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, Chernogolovka, Russia;
3 - Faculty of Physics and Engineering, ITMO University, St. Petersburg, Russia;
4 - Bauman Moscow State Technical University, Moscow, Russia
Abstract
Modern research into advanced functional polymers is driven by the rapidly growing demand for a new functional material that can be used in innovative technologies for the fabrication of smart, flexible, and wearable devices. Fluorinated polymeric materials are widely used for optical devices such as protective coatings, flexible substrates, electrodes, and optically active materials due to their chemical stability.
This work is devoted to the development of polymer nanocomposites films based on the fluorinated polymer and CsPbBr3 perovskite nanocrystals (NCs) for application in solar cells and optical sensors. The incorporation of CsPbBr3 perovskite NCs into a fluorinated polymer matrix leads to protection of the NCs from water-induced degradation. A membrane consisting of 6-10 nm perovskite NCs and a fluorine-containing polymer matrix based on 1H,1H,5H-octafluoropentyl methacrylate monomer was obtained by spincoating. The membrane consisted of 3 sequentially deposited layers: a polymer layer, an NCs layer, and a polymer layer. To obtain a polymer matrix for protecting NCs from moisture, the polymer layer compositions were optimized by varying the monomer concentration and its ratio with the crosslinker (10-30 wt.%) and photoinitiator (0.1, 1, 5, 10 wt.%), as well as the application conditions, UV polymerization parameters and drying conditions (temperature, time). After immersing the resulting membrane in water, the optical activity of the perovskite NCs was preserved, which were confirmed by the photoluminescence quantum yield measurements. Further research is aimed at creating optical devices based on this membrane.
The study was supported by a grant from the Russian Science Foundation 24-29-00780.
Speaker
Tatiana G. Statsenko
Moscow Institute of Physics and Technology, Dolgoprudny, Russia
Russia
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