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- Authors:
- Lee, Kangho; Szydłowska, Beata M.; Hartwig, Oliver; Synnatschke, Kevin; Tywoniuk, Bartlomiej; Hartman, Tomas; Tomasevic-Ilic, Tijana; Gabbett, Cian P.; Coleman, Jonathan N.; Sofer, Zdenek; Spasenovic, Marko; Backes, Claudia; Duesberg, Georg S.
- Document type:
- Zeitschriftenartikel / Journal Article
- Title:
- Highly conductive and long-term stable films from liquid-phase exfoliated platinum diselenide
- Journal:
- Journal of Materials Chemistry C
- Volume:
- 11
- Issue:
- 2
- Year:
- 2023
- Pages from - to:
- 593-599
- Language:
- Englisch
- Abstract:
- Liquid-phase exfoliation (LPE) has been introduced as a versatile and scalable production method for two-dimensional (2D) materials. This method yields dispersions that allow for the fabrication of printable and flexible electronic devices. However, the fabrication of uniform and homogeneous films from LPE dispersions with a performance similar to that of bottom-up grown materials remains a challenge, as the film quality strongly influences the optical and electrical performance of devices. Furthermore, longterm stability remains a major challenge for all 2D material based applications. In this study, we report on highly conductive tiled network films made of platinum diselenide (PtSe2) flakes derived using a scalable LPE method. We characterized the homogeneous films in terms of morphology and electrical behavior. As an example of applicability, we produce a chemiresistive sensor structure with the PtSe2 films and show significant resistance changes upon periodic ammonia gas exposures, revealing a sub- 0.1 part per million (ppm) detection limit (DL). More remarkably the devices are fully functional after 15 months, underlining the high stability of PtSe2 based devices.
- DOI:
- 10.1039/d2tc03889g
- URL:
- https://doi.org/10.1039/D2TC03889G
- Department:
- Fakultät für Elektrotechnik und Informationstechnik
- Institute:
- EIT 2 - Institut für Physik
- Chair:
- Düsberg, Georg S.
- Project:
- Graphene Flagship Core 3 ; NobleNEMS ; Vital Sense
- Open Access yes or no?:
- Ja / Yes
- Type of OA license:
- CC BY 3.0
- Licence URL:
- https://creativecommons.org/licenses/by/3.0/
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