Ultralow thermal conductivity and high-temperature thermoelectric performance in n-type K₂.₅Bi₈.₅Se₁₄

We studied the narrow bandgap (0.55 eV) semiconductor K2.5Bi8.5Se14, as a potential thermoelectric material for power generation. Samples of polycrystalline K2.5Bi8.5Se14 prepared by spark plasma sintering exhibit exceptionally low lattice thermal conductivities (κlat) of 0.57 − 0.33 Wm−1K−1 in the...

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Bibliographic Details
Main Authors: Luo, Zhong-Zhen, Cai, Songting, Hao, Shiqiang, Bailey, Trevor P., Hu, Xiaobing, Hanus, Riley, Ma, Runchu, Tan, Gangjian, Chica. Daniel G., Snyder, G. Jeffrey, Uher, Ctirad, Wolverton, Christopher, Dravid, Vinayak P., Yan, Qingyu, Kanatzidis, Mercouri G.
Other Authors: School of Materials Science and Engineering
Format: Article
Language:English
Published: 2022
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Online Access:https://hdl.handle.net/10356/159049
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Institution: Nanyang Technological University
Language: English
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