Highly conductive and long-term stable films from liquid-phase exfoliated platinum diselenide
Citation:
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, Highly conductive and long-term stable films from liquid-phase exfoliated platinum diselenide, Journal of Materials Chemistry C, 11, 2, 2022, 593-599Download Item:
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 sub0.1 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
Author's Homepage:
http://people.tcd.ie/colemaj
Author: Coleman, Jonathan
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Journal of Materials Chemistry C;11;
2;
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http://dx.doi.org/10.1039/d2tc03889gMetadata
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