89861 20210902121622.0 doi 10.1002/admi.201902104 sideral 118008 ART-2020-118008 eng Kim, K.H. Chemical Sensing with Atomically Thin Platinum Templated by a 2D Insulator 2020 Access copy available to the general public Unrestricted Boosting the sensitivity of solid-state gas sensors by incorporating nanostructured materials as the active sensing element can be complicated by interfacial effects. Interfaces at nanoparticles, grains, or contacts may result in nonlinear current–voltage response, high electrical resistance, and ultimately, electric noise that limits the sensor read-out. This work reports the possibility to prepare nominally one atom thin, electrically continuous platinum layers by physical vapor deposition on the carbon zero layer (also known as the buffer layer) grown epitaxially on silicon carbide. With a 3–4 Å thin Pt layer, the electrical conductivity of the metal is strongly modulated when interacting with chemical analytes, due to charges being transferred to/from Pt. The strong interaction with chemical species, together with the scalability of the material, enables the fabrication of chemiresistor devices for electrical read-out of chemical species with sub part-per-billion (ppb) detection limits. The 2D system formed by atomically thin Pt on the carbon zero layer on SiC opens up a route for resilient and high sensitivity chemical detection, and can be the path for designing new heterogenous catalysts with superior activity and selectivity. info:eu-repo/semantics/openAccess by-nc http://creativecommons.org/licenses/by-nc/3.0/es/ 6.147 2020 CHEMISTRY, MULTIDISCIPLINARY 46 / 178 = 0.258 2020 Q2 T1 MATERIALS SCIENCE, MULTIDISCIPLINARY 85 / 333 = 0.255 2020 Q2 T1 1.671 2020 Mechanics of Materials 2020 Q1 Mechanical Engineering 2020 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion He, H. Rodner, M. Yakimova, R. Larsson, K. Piantek, M. Serrate, D. Universidad de Zaragoza (orcid)0000-0002-3260-9641 Zakharov, A. Kubatkin, S. Eriksson, J. Lara-Avila, S. 2003 395 Universidad de Zaragoza Dpto. Física Materia Condensa. Área Física Materia Condensada (2020), 1902104 [7 pp] Adv. mater. interfaces Advanced Materials Interfaces 2196-7350 472069 http://zaguan.unizar.es/record/89861/files/texto_completo.pdf Versión publicada 30597 http://zaguan.unizar.es/record/89861/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:89861 articulos driver 2021-09-02-08:48:08 ARTICLE