Proceedings of nanoGe Fall Meeting 2021 (NFM21)
DOI: https://doi.org/10.29363/nanoge.nfm.2021.253
Publication date: 23rd September 2021
The ability to precisely control the equilibrium carrier concentration in organic semiconducting devices is of great interest. Solution processed doped layers are of extreme importance for high throughput production of organic electronic devices via roll-to-roll or ink-jet printing. The conventional picture of doping organic semiconductors involves full electron transfer from the semiconductor to the dopant (p-doping) or from the dopant to the semiconductor (n-doping) and the formation of species (polarons or bipolarons) that are the itinerant charge carriers. This process is known as “molecular doping”, which requires matching of the energy levels between the semiconductor and the dopant. In this talk, I will discuss unconventional doping methods that do not require energy level matching such as neutral polymers in non-aqueous solvents doped by Lewis acid-water complexes (Brønsted acids) and “self-doped” charged polymers in aqueous solution.
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