Correlation between thermoelectric transport properties and crystal structure in two-dimensional CrSiTe 3

Abstract

The thermoelectric transport properties of artificially textured polycrystalline CrSiTe 3 samples have been investigated for elucidating their correlations with a crystal structure and the corresponding charge density distribution. We verified that the low mobility of 13–27 cm 2 V −1 s −1 attributing poor electronic transport properties is originated from the discrete charge density distribution in the covalently bonded layer. Also, the modulation of thermal conductivity values from 3.5 to 5.4 W m −1 K −1 with varying the texture was confirmed in pristine CrSiTe 3 . Thus, we suggest that the electronic and thermal transport properties of layer structured CrSiTe 3 are strongly correlated with crystallographic features. © 2019 Elsevier B.V.