Journal article
Effect of Synthesis on Quality, Electronic Properties and Environmental Stability of Individual Monolayer Ti3C2 MXene Flakes
Advanced electronic materials, v 2(12), pn/a
Dec 2016
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
2D transition metal carbide Ti3C2Tx (T stands for surface termination), the most widely studied MXene, has shown outstanding electrochemical properties and promise for a number of bulk applications. However, electronic properties of individual MXene flakes, which are important for understanding the potential of these materials, remain largely unexplored. Herein, a modified synthetic method is reported for producing high‐quality monolayer Ti3C2Tx flakes. Field‐effect transistors (FETs) based on monolayer Ti3C2Tx flakes are fabricated and their electronic properties are measured. Individual Ti3C2Tx flakes exhibit a high conductivity of 4600 ± 1100 S cm−1 and field‐effect electron mobility of 2.6 ± 0.7 cm2 V−1 s−1. The resistivity of multilayer Ti3C2Tx films is only one order of magnitude higher than the resistivity of individual flakes, which indicates a surprisingly good electron transport through the surface terminations of different flakes, unlike in many other 2D materials. Finally, the fabricated FETs are used to investigate the environmental stability and kinetics of oxidation of Ti3C2Tx flakes in humid air. The high‐quality Ti3C2Tx flakes are reasonably stable and remain highly conductive even after their exposure to air for more than 24 h. It is demonstrated that after the initial exponential decay the conductivity of Ti3C2Tx flakes linearly decreases with time, which is consistent with their edge oxidation.
A synthetic method for high‐quality monolayer flakes of Ti3C2Tx, the most studied MXene material, and the investigation of their electrical properties, environmental stability, and kinetics of oxidation in air are reported. Individual monolayer Ti3C2Tx flakes have electrical conductivity of 4600 ± 1100 S cm−1, field‐effect electron mobility of 2.6 ± 0.7 cm2 V−1s−1, and remain highly conductive even after exposure to air for more than 24 h.
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Details
- Title
- Effect of Synthesis on Quality, Electronic Properties and Environmental Stability of Individual Monolayer Ti3C2 MXene Flakes
- Creators
- Alexey Lipatov - University of Nebraska – LincolnMohamed Alhabeb - Drexel UniversityMaria R Lukatskaya - Drexel UniversityAlex Boson - University of Nebraska – LincolnYury Gogotsi - Drexel UniversityAlexander Sinitskii - University of Nebraska – Lincoln
- Publication Details
- Advanced electronic materials, v 2(12), pn/a
- Publisher
- Wiley
- Number of pages
- 9
- Grant note
- Nebraska Materials Research Science and Engineering Center (MRSEC) (DMR‐1420645) U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000392939300004
- Scopus ID
- 2-s2.0-84993939305
- Other Identifier
- 991014970027704721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology
- Physics, Applied