Abstract
Thermoelectric (TE) devices are gaining significant consideration from the renewable energy community because of their environment friendliness. In this study, a series of indium (In) doped bismuth oxyselenide (Bi2-xInxO2Se) ceramics has been prepared through a facile hydrothermal route followed by consolidation into bulk pellets using Isostatic Pressing. The effects of indium doping on crystal structure, microstructure and thermoelectric properties have been systematically investigated. The detailed structural characterization reveals the partial substitution of In into the lattice of Bi2SeO2 at Bi-site along with the formation of a secondary phase (Bi4O8Se). The highest power factor (PF) of 17.40 µW/mK2 has been achieved at 500 K. In-doping has introduced defects into the lattice to offer strong scattering site for phonons.
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Acknowledgements
All the authors are thankful to the Higher Education Commission (HEC) of Pakistan for financial support through the 8096/NRPU/R&D/HEC/2017 project.
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MWA: Conceptualization and research methodology, Experimentation and characterization, drafting and analyzing data; SB: research methodology, analysis, reviewing and editing, MS: Experimentation, reviewing and editing, MI: Experimentation, Analysis, Reviewing and editing, MAB: Reviewing and editing MAA: Reviewing and editing.
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Akram, M.W., Butt, S., Saadullah, M. et al. Thermoelectric transportation in indium doped bismuth oxyselenide (Bi2-xInxO2Se) ceramics consolidated by conventional isostatic pressing. J Mater Sci: Mater Electron 35, 272 (2024). https://doi.org/10.1007/s10854-024-12032-6
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DOI: https://doi.org/10.1007/s10854-024-12032-6