Flat phonon modes driven ultralow thermal conductivities in Sr3AlSb3 and Ba3AlSb3 Zintl compounds

Searching for compounds with intrinsic low lattice thermal conductivity has been proven a successful strategy for achieving high thermoelectric performance. Herein, employing density functional theory calculations combined with electron and phonon Boltzmann transport theories, we report that Sr3AlSb...

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Veröffentlicht in:	Applied physics letters 2022-04, Vol.120 (14)
Hauptverfasser:	Yang, Zhaoyu, Min, Jingjing, Dong, Tieshuan, Wen, Weiru, Feng, Zhenzhen, Yang, Gui, Yan, Yuli, Zeng, Zaiping
Format:	Artikel
Sprache:	eng
Schlagworte:	Anharmonicity Applied physics Conductivity Density functional theory Figure of merit Heat conductivity Heat transfer High temperature Lattice vibration Phonons Room temperature Thermal conductivity Thermoelectric materials
Online-Zugang:	Volltext
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