Highly conductive and long-term stable films from liquid-phase exfoliated platinum diselenide
| Autor: | 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, Georg S. Duesberg |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Journal of Materials Chemistry C |
| ISSN: | 2050-7534 2050-7526 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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