Discordant nature of Cd in PbSe: off-centering and core-shell nanoscale CdSe precipitates lead to high thermoelectric performance

We report a novel hierarchical microstructure in the PbSe-CdSe system, which collectively contributes to significant enhancement in thermoelectric performance, with ZT ave ∼ 0.83 across the 400-923 K temperature range, the highest reported for p-type, Te-free PbSe systems. We have investigated the l...

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Veröffentlicht in:	Energy & environmental science 2020-01, Vol.13 (1), p.2-211
Hauptverfasser:	Cai, Songting, Hao, Shiqiang, Luo, Zhong-Zhen, Li, Xiang, Hadar, Ido, Bailey, Trevor P, Hu, Xiaobing, Uher, Ctirad, Hu, Yan-Yan, Wolverton, Christopher, Dravid, Vinayak P, Kanatzidis, Mercouri G
Format:	Artikel
Sprache:	eng
Schlagworte:	Architecture Atomic properties Atomic structure Cadmium Carrier density Chemical precipitation Core-shell structure Crystal structure Electron mobility Halites Hall effect Heat conductivity Heat transfer Lead selenides Magnetic resonance spectroscopy Mathematical analysis Microstructure NMR NMR spectroscopy Nuclear magnetic resonance Photoelectric emission Potassium Power factor Precipitates Room temperature Seebeck effect Spectroscopy Spectrum analysis Thermal conductivity Thermoelectricity Zinc Zincblende
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