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Synergetic tuning of electrical/thermal transport via dual‐doping in Bi 0.96− x M g x Pb 0.06 CuSeO
Author(s) -
Liu Yong,
Zhu Yingcai,
Liu WeiShu,
Marcelli Augusto,
Xu Wei
Publication year - 2019
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.16200
Subject(s) - electrical resistivity and conductivity , thermoelectric effect , seebeck coefficient , thermal conductivity , doping , materials science , analytical chemistry (journal) , thermoelectric materials , atom (system on chip) , thermal , chemistry , thermodynamics , physics , optoelectronics , composite material , environmental chemistry , quantum mechanics , computer science , embedded system
The layered oxyselenides BiCuSeO was recently discovered as potential thermoelectric. Our result reveals that the substitute for atom Bi 3+ by Pb 2+ & Mg 2+ in (Bi 2 O 2 ) 2− play an important role in electrical transport properties. The maximum electrical conductivity obtained is 460 Scm −1 for Bi 0.84 Mg 0.10 Pb 0.06 CuSeO at RT , highly above the 15 Sm −1 for BiCuSeO. In synergy with low thermal conductivity (0.6‐0.4 Wm −1 K −1 ) and large thermopower (300‐500 μVK −1 ), the highest ZT is achieved about 0.80 at 873 K for Bi 0.88 Mg 0.06 Pb 0.06 CuSeO.