Revealing the Anisotropic Thermal Conductivity of Black Phosphorus using the Time-Resolved Magneto-Optical Kerr Effect

Abstract

Black phosphorus (BP) has emerged as a direct-bandgap semiconducting material with great application potentials in electronics, photonics, and energy conversion. Experimental characterization of the anisotropic thermal properties of BP, however, is extremely challenging due to the lack of reliable and accurate measurement techniques to characterize anisotropic samples that are micrometers in size. Here, we report measurement results of the anisotropic thermal conductivity of bulk BP along three primary crystalline orientations, using the novel time-resolved magneto-optical Kerr effect (TR-MOKE) with enhanced measurement sensitivities. Two-dimensional beam-offset TR-MOKE signals from BP flakes yield the thermal conductivity along the zigzag crystalline direction to be 84 ~ 101 W/(m*K), nearly three times as large as that along the armchair direction (26 ~ 36 W/(m*K)). The through-plane thermal conductivity of BP ranges from 4.3 to 5.5 W/(m*K). The first-principles calculation was performed for the first time to predict the phonon transport in BP both along the in-plane zigzag and armchair directions and along the through-plane direction. This work successfully unveiled the fundamental mechanisms of anisotropic thermal transport along the three crystalline directions in bulk BP, as demonstrated by the excellent agreement between our first-principles-based theoretical predictions and experimental characterizations on the anisotropic thermal conductivities of bulk BP.

arXiv comment23 pages and 6 figures in manuscript; 12 figures in supplementary information

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Cited by in corpus (16)

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• Tutorial: Time-domain thermoreflectance (TDTR) for thermal property characterization of bulk and thin film materials
• Phononic thermal properties of two-dimensional materials
• Temperature dependence of anisotropic thermal conductivity tensor of bulk black phosphorus
• Phonon and Thermal Properties of Quasi-Two-Dimensional FePS3 and MnPS3 Antiferromagnetic Semiconductor Materials
• Spatial-Temporal Imaging of Anisotropic Photocarrier Dynamics in Black Phosphorus
• A new elliptical-beam method based on time-domain thermoreflectance (TDTR) to measure the in-plane anisotropic thermal conductivity and its comparison with the beam-offset method
• Anisotropic thermal conductivity measurement using a new Asymmetric-Beam Time-Domain Thermoreflectance (AB-TDTR) method
• Temperature dependent anisotropic charge carrier mobility limited by ionized impurity scattering in thin-layer black phosphorus
• Effect of the accuracy of interatomic force constants on the prediction of lattice thermal conductivity
• Phonon transport in single-layer Mo1-xWxS2 alloy embedded with WS2 nanodomains
• Spatially resolved lock-in micro-thermography (SR-LIT): A tensor analysis-enhanced method for anisotropic thermal characterization
• Direct Investigation of the Birefringent Optical Properties of Black Phosphorus with Picosecond Interferometry
• Three-dimensional (3D) tensor-based methodology for characterizing 3D anisotropic thermal conductivity tensor
• Heat localization through reduced dimensionality
• Ultra-high frequency magnetic resonance through strain-spin coupling in perpendicular magnetic multi-layers