Electrical properties of MXene thin films prepared from non-aqueous polar aprotic solvents

0574627 - FZÚ 2024 RIV DE eng J - Journal Article
Gutsul, O. - Szabó, Ondrej - Kumar, N. - Pfeifer, R. - Dzurňák, B. - Sasitharan, K. - Slobodyan, V. - Kromka, Alexander - Rezek, B.
Electrical properties of MXene thin films prepared from non-aqueous polar aprotic solvents.
Journal of Materials Research. Roč. 38, č. 12 (2023), s. 3227-3237. ISSN 0884-2914. E-ISSN 2044-5326
R&D Projects: GA MŠMT LM2023051
Institutional support: RVO:68378271
Keywords : MXenes * DMF * NMP * impedance spectroscopy * four–point probe method * resistance * electrical conductivity * charge transfer * spin coating * drop casting
OECD category: Materials engineering
Impact factor: 2.7, year: 2022
Method of publishing: Limited access
https://doi.org/10.1557/s43578-023-01033-6

For sustainable energy technologies, MXenes offer unique properties such as high electrical conductivity, hydrophilicity, excellent thermal stability, large interlayer spacing, easily tunable structure, high surface area, and microporous structure that facilitate faster ion transfer. To address limitations of aqueous MXene suspension, Ti3C2-type thin films are prepared from non-aqueous suspensions in DMF and NMP using solvent exchange method followed by spin coating or drop casting on gold interdigitated electrodes and ceramic substrates and their electrical properties are compared. Electrical properties investigated by impedance spectroscopy and four-point probe measurements show that DMF-MXene layers exhibit higher electrical conductivity than MXene deposited from NMP. The material technology and electrical properties of MXene thin films prepared from non-aqueous solvents may thus be promising for possible use of MXenes in hybrid photovoltaic devices as charge-transporting layers.
Permanent Link: https://hdl.handle.net/11104/0348004