Highly conductive and long-term stable films from liquid-phase exfoliated platinum diselenide

• Verfasst von: Lee, Kangho [VerfasserIn]
• Verfasst von: Szydłowska, Beata Maria [VerfasserIn]
• Verfasst von: Hartwig, Oliver [VerfasserIn]
• Verfasst von: Synnatschke, Kevin [VerfasserIn]
• Verfasst von: Tywoniuk, Bartlomiej [VerfasserIn]
• Verfasst von: Hartman, Tomáš [VerfasserIn]
• Verfasst von: Tomašević-Ilić, Tijana [VerfasserIn]
• Verfasst von: Gabbett, Cian P. [VerfasserIn]
• Verfasst von: Coleman, Jonathan N. [VerfasserIn]
• Verfasst von: Sofer, Zdeněk [VerfasserIn]
• Verfasst von: Spasenović, Marko [VerfasserIn]
• Verfasst von: Backes, Claudia [VerfasserIn]
• Verfasst von: Duesberg, Georg S. [VerfasserIn]
• Titel: Highly conductive and long-term stable films from liquid-phase exfoliated platinum diselenide
• Verf.angabe: Kangho Lee, Beata M. Szydłowska, Oliver Hartwig, Kevin Synnatschke, Bartlomiej Tywoniuk, Tomáš Hartman, Tijana Tomašević-Ilić, Cian P. Gabbett, Jonathan N. Coleman, Zdeněk Sofer, Marko Spasenović, Claudia Backes and Georg S. Duesberg
• Jahr: 2023
• Umfang: 7 S.
• Fussnoten: Gesehen am 31.01.2023
• Titel Quelle: Enthalten in: Journal of materials chemistry / C
• Ort Quelle: London [u.a.] : RSC, 2013
• Jahr Quelle: 2023
• Band/Heft Quelle: 11(2023), 2, Seite 593-599
• ISSN Quelle: 2050-7534
• DOI: doi:10.1039/D2TC03889G
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1832780449

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, long-term 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.