Understanding and Controlling Photothermal Responses in MXenesClick to copy article linkArticle link copied!
- Burak Guzelturk*Burak Guzelturk*Email for B.G.: [email protected]X-ray Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United StatesMore by Burak Guzelturk
- Vladislav KamysbayevVladislav KamysbayevDepartment of Chemistry, James Franck Institute, and Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United StatesMore by Vladislav Kamysbayev
- Di WangDi WangDepartment of Chemistry, James Franck Institute, and Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United StatesMore by Di Wang
- Huicheng HuHuicheng HuDepartment of Chemistry, James Franck Institute, and Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United StatesMore by Huicheng Hu
- Ruiyu LiRuiyu LiDepartment of Chemistry, James Franck Institute, and Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United StatesMore by Ruiyu Li
- Sarah B. KingSarah B. KingDepartment of Chemistry, James Franck Institute, and Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United StatesMore by Sarah B. King
- Alexander H. ReidAlexander H. ReidSLAC National Accelerator Laboratory, Menlo Park, California 94025, United StatesMore by Alexander H. Reid
- Ming-Fu LinMing-Fu LinSLAC National Accelerator Laboratory, Menlo Park, California 94025, United StatesMore by Ming-Fu Lin
- Xijie WangXijie WangSLAC National Accelerator Laboratory, Menlo Park, California 94025, United StatesMore by Xijie Wang
- Donald A. WalkoDonald A. WalkoX-ray Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United StatesMore by Donald A. Walko
- Xiaoyi ZhangXiaoyi ZhangX-ray Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United StatesMore by Xiaoyi Zhang
- Aaron LindenbergAaron LindenbergDepartment of Materials Science and Engineering, Stanford University, Stanford, California 94305, United StatesStanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United StatesMore by Aaron Lindenberg
- Dmitri V. Talapin*Dmitri V. Talapin*Email for D.V.T.:[email protected]Department of Chemistry, James Franck Institute, and Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United StatesCenter for Nanoscale Materials, Argonne National Laboratory, Lemont, Illinois 60439, United StatesMore by Dmitri V. Talapin
Abstract
MXenes have the potential for efficient light-to-heat conversion in photothermal applications. To effectively utilize MXenes in such applications, it is important to understand the underlying nonequilibrium processes, including electron–phonon and phonon–phonon couplings. Here, we use transient electron and X-ray diffraction to investigate the heating and cooling of photoexcited MXenes at femtosecond to nanosecond time scales. Our results show extremely strong electron–phonon coupling in Ti3C2-based MXenes, resulting in lattice heating within a few hundred femtoseconds. We also systematically study heat dissipation in MXenes with varying film thicknesses, chemical surface terminations, flake sizes, and annealing conditions. We find that the thermal boundary conductance (TBC) governs the thermal relaxation in films thinner than the optical penetration depth. We achieve a 2-fold enhancement of the TBC, reaching 20 MW m–2 K–1, by controlling the flake size or chemical surface termination, which is promising for engineering heat dissipation in photothermal and thermoelectric applications of the MXenes.
Cited By
This article is cited by 6 publications.
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