Enhancement of thermoelectric figure-of-merit by resonant states of aluminium doping in lead selenide
Energy & Environmental Science2011Vol. 5(1), pp. 5246–5251
Citations Over TimeTop 10% of 2011 papers
Qinyong Zhang, Hui Wang, Weishu Liu, Dandan Wang, Bo Yu, Qian Zhang, Zhiting Tian, George Ni, Sangyeop Lee, Keivan Esfarjani, Gang Chen, Zhifeng Ren
Abstract
By adding aluminium (Al) into lead selenide (PbSe), we successfully prepared n-type PbSe thermoelectric materials with a figure-of-merit (ZT) of 1.3 at 850 K. Such a high ZT is achieved by a combination of high Seebeck coefficient caused by very possibly the resonant states in the conduction band created by Al dopant and low thermal conductivity from nanosized phonon scattering centers.
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