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

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 f...

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Hauptverfasser: Lee, Kangho (VerfasserIn) , Szydłowska, Beata Maria (VerfasserIn) , Hartwig, Oliver (VerfasserIn) , Synnatschke, Kevin (VerfasserIn) , Tywoniuk, Bartlomiej (VerfasserIn) , Hartman, Tomáš (VerfasserIn) , Tomašević-Ilić, Tijana (VerfasserIn) , Gabbett, Cian P. (VerfasserIn) , Coleman, Jonathan N. (VerfasserIn) , Sofer, Zdeněk (VerfasserIn) , Spasenović, Marko (VerfasserIn) , Backes, Claudia (VerfasserIn) , Duesberg, Georg S. (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 2023
In: Journal of materials chemistry. C, Materials for optical and electronic devices
Year: 2023, Jahrgang: 11, Heft: 2, Pages: 593-599
ISSN:2050-7534
DOI:10.1039/D2TC03889G
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1039/D2TC03889G
Verlag, lizenzpflichtig, Volltext: https://pubs.rsc.org/en/content/articlelanding/2023/tc/d2tc03889g
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Verfasserangaben: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

MARC

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520 |a 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. 
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