Stabilizing the optimal carrier concentration for high thermoelectric efficiency.

Pei, Yanzhong; LaLonde, Aaron D; Heinz, Nicholas A; Shi, Xiaoya; Iwanaga, Shiho; Wang, Heng; Chen, Lidong; Snyder, G Jeffrey · Adv Mater · 2011

basic_science · Level V

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Abstract

The band structure of PbTe can be manipulated by alloying with MgTe to control the band degeneracy. This is used to stabilize the optimal carrier concentration, making it less temperature dependent, demonstrating a new strategy to improve overall thermoelectric efficiency over a broad temperature range.

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