High temperature thermoelectric properties of the tetradymite Bi2-xPbxTe2Se (0 ≤ x ≤ 0.03)

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00549432" target="_blank" >RIV/68378271:_____/21:00549432 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1063/5.0077166" target="_blank" >https://doi.org/10.1063/5.0077166</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/5.0077166" target="_blank" >10.1063/5.0077166</a>

Result language
angličtina
Original language name
High temperature thermoelectric properties of the tetradymite Bi2-xPbxTe2Se (0 ≤ x ≤ 0.03)
Original language description
We report on the synthesis, characterizations, and high-temperature thermoelectric properties of polycrystalline samples of Bi2-xPbxTe2Se for 0 ≤ x ≤ 0.03. Powder x-ray diffraction and scanning electron microscopy confirm the successful insertion of Pb into the hexagonal unit cell of the tetradymite Bi2Te2Se. Pb acts as an acceptor-like impurity, gradually shifting the lightly doped, n-type electronic properties of Bi2Te2Se toward heavily doped, p-type properties in Pb-containing samples, which is additionally confirmed by electronic structure calculations. The increased degenerate character results in high power factors while maintaining low thermal conductivity values.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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