Enhancement of thermoelectric figure-of-merit by resonant states of aluminium doping in lead selenide

Zhang, Qinyong; Wang, Hui; Liu, Weishu; Wang, Hengzhi; Yu, Bo; Zhang, Qian; Tian, Zhiting; Ni, George; Lee, Sangyeop; Esfarjani, Keivan; Chen, Gang; Ren, Zhifeng

doi:10.1039/c1ee02465e

Title: Enhancement of thermoelectric figure-of-merit by resonant states of aluminium doping in lead selenide

Journal Article · Fri Nov 11 00:00:00 EST 2011 · Energy & Environmental Science

DOI:https://doi.org/10.1039/c1ee02465e· OSTI ID:1386944

Zhang, Qinyong ^[1]; Wang, Hui ^[2]; Liu, Weishu ^[2]; Wang, Hengzhi ^[2]; Yu, Bo ^[2]; Zhang, Qian ^[2]; Tian, Zhiting ^[3]; Ni, George ^[3]; Lee, Sangyeop ^[3]; Esfarjani, Keivan ^[3]; Chen, Gang ^[3]; Ren, Zhifeng ^[2]

Xihua Univ., Chengdu, Sichuan (China); Boston College, Chestnut Hill, MA (United States)
Boston College, Chestnut Hill, MA (United States)
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)

In this study, 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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Research Organization:: Energy Frontier Research Centers (EFRC) (United States). Solid-State Solar-Thermal Energy Conversion Center (S3TEC)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC0001299; FG02-09ER46577; FG02-08ER46516

OSTI ID:: 1386944

Journal Information:: Energy & Environmental Science, Vol. 5, Issue 1; Related Information: S3TEC partners with Massachusetts Institute of Technology (lead); Boston College; Oak Ridge National Laboratory; Rensselaer Polytechnic Institute; ISSN 1754-5692

Publisher:: Royal Society of ChemistryCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 326 works

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Title: Enhancement of thermoelectric figure-of-merit by resonant states of aluminium doping in lead selenide

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