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. 2021 Mar 22;14(6):1564. doi: 10.3390/ma14061564

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Temperature-dependent electrical conductivity σ(T) fitted with the mixed, ionization and acoustic scattering mechanism (lines) of the pristine (x = 0.0) compound (a) and iodine doped compounds (x = 0.1, 0.3, 0.5 mol.%); (b) Room temperature electrical conductivity (left axis, black squares) and Hall carrier concentration (right axis, red circle) as a function of the I-doping concentration (c) and Hall mobility with Hall carrier concentration (d) of the Bi₂Te_2.85Se_0.15I_x (x = 0.0, 0.1, 0.3, 0.5 mol.%) compounds for the Pe-direction (closed symbol, solid line) and Pa-direction (open symbol, dashed line).