Four-Probe Measurement of Thermal Transport in Suspended Few-Layer Graphene With Polymer Residue
Four-Probe Measurement of Thermal Transport in Suspended Few-Layer Graphene With Polymer Residue
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DOI：
10.1115/1.4043167
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发表时间：
2019-06
期刊：
影响因子：
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通讯作者：
E. Ou;Xun Li;Sangyeop Lee;Kenji Watanabe;T. Taniguchi;Li Shi
中科院分区：
文献类型：
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作者：
E. Ou;Xun Li;Sangyeop Lee;Kenji Watanabe;T. Taniguchi;Li Shi
未知的热接触热阻的存在限制了悬浮石墨烯样品的先前的双探针热输运测量。在这里，我们报告四探针热输运测量悬浮七层石墨烯。通过隔离接触热阻，我们能够将观察到的热导率降低主要归因于样品上的聚合物残留物，而不是接触热阻，这导致了聚合物残留物影响的先前实验研究中的模糊性。由于聚合物残留物的非本征散射率提取的测量结果的基础上的Peierls-Boltzmann声子输运方程的解决方案。
The presence of unknown thermal contact thermal resistance has limited prior two-probe thermal transport measurements of suspended graphene samples. Here, we report four-probe thermal transport measurements of suspended seven-layer graphene. By isolating the thermal contact resistance, we are able to attribute the observed reduced thermal conductivity primarily to polymeric residue on the sample instead of the contact thermal resistance, which resulted in ambiguity in the prior experimental studies of the effect of polymer reside. The extrinsic scattering rate due to the polymer residue is extracted from the measurement results based on a solution of the Peierls-Boltzmann phonon transport equation.