Enhancement of thermoelectric figure-of-merit by resonant states of aluminium doping in lead selenide
Author(s)Zhang, Qinyong; Wang, Hui; Liu, Weishu; Wang, Hengzhi; Yu, Bo; Zhang, Qian; Tian, Zhiting; Lee, Sangyeop; Esfarjani, Keivan; Chen, Gang; Ren, Zhifeng; Ni, George Wei; ... Show more Show less
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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.
DepartmentMassachusetts Institute of Technology. Department of Mechanical Engineering
Energy & Environmental Science
Royal Society of Chemistry
Zhang, Qinyong, Hui Wang, Weishu Liu, Hengzhi Wang, Bo Yu, Qian Zhang, Zhiting Tian, et al. “Enhancement of Thermoelectric Figure-of-Merit by Resonant States of Aluminium Doping in Lead Selenide.” Energy & Environmental Science 5, no. 1 (2012): 5246.
Author's final manuscript