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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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(a) Temperature-dependent anisotropic power factor S²σ(T), (b) room-temperature power factor as a function of I-doping concentration, (c) temperature-dependent anisotropic zT values of the Bi₂Te_2.85Se_0.15I_x (x = 0.0, 0.1, 0.3, 0.5 mol.%) compounds (d) and the room-temperature zT value with the I-doping concentration.