The rapidly increasing number of 2-dimensional (2D) materials that have been isolated or synthesized provides an enormous opportunity to realize new device functionalities. Whereas their optical and electrical characterizations have been more readily reported, quantitative thermal characterization is more challenging due to the difficulties with localizing heat flow. Optical pump-probe techniques that are well established for the study of bulk materials or thin films have limited sensitivity to in-plane heat transport, and the characterization of the thermal anisotropy that is common in 2D materials is, therefore, challenging. Here, we present a new approach to quantify the thermal properties based on the magneto-optical Kerr effect that yields quantitative insight into cross-plane and in-plane heat transport. The use of a very thin magnetic material as heater/thermometer increases in-plane thermal gradients without complicating the data analysis in spite of the layer being optically semitransparent. The approach has the added benefit that it does not require the sample to be suspended, providing insight into thermal transport in supported, devicelike environments. We apply this approach to measure the thermal properties of a range of 2D materials, which are of interest for device applications, including single-layer graphene, few-layer hexagonal boron nitride, single- and few-layer MoS2, and bulk MoSe2 crystal. The measured thermal properties will have important implications for thermal management in device applications.
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Simultaneous measurement of anisotropic thermal conductivity and thermal boundary conductance of 2-dimensional materials
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28 November 2019
Research Article|
November 25 2019
Simultaneous measurement of anisotropic thermal conductivity and thermal boundary conductance of 2-dimensional materials

Mizanur Rahman;
Mizanur Rahman
1
Department of Physics and Astronomy, York University
, 4700 Keele Street, Toronto, Ontario M3J 1P3, Canada
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Mohammadreza Shahzadeh
;
Mohammadreza Shahzadeh
2
Department of Electrical Engineering and Computer Science, York University
, 4700 Keele Street, Toronto, Ontario M3J 1P3, Canada
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Simone Pisana
Simone Pisana
a)
1
Department of Physics and Astronomy, York University
, 4700 Keele Street, Toronto, Ontario M3J 1P3, Canada
2
Department of Electrical Engineering and Computer Science, York University
, 4700 Keele Street, Toronto, Ontario M3J 1P3, Canada
a)Author to whom correspondence should be addressed: simone.pisana@lassonde.yorku.ca
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a)Author to whom correspondence should be addressed: simone.pisana@lassonde.yorku.ca
J. Appl. Phys. 126, 205103 (2019)
Article history
Received:
July 04 2019
Accepted:
November 02 2019
Connected Content
A companion article has been published:
A simpler way to thermally characterize 2D materials
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Citation
Mizanur Rahman, Mohammadreza Shahzadeh, Simone Pisana; Simultaneous measurement of anisotropic thermal conductivity and thermal boundary conductance of 2-dimensional materials. J. Appl. Phys. 28 November 2019; 126 (20): 205103. https://doi.org/10.1063/1.5118315
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