Wei-Di Liu

Nov 9, 2023 | dx.doi.org | De-Zhuang Wang |Wei-Di Liu |Yuanqing Mao |Shuai Li

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Oct 11, 2023 | dx.doi.org | Lu Yu |Xiao-Lei Shi |Yuanqing Mao |Wei-Di Liu

Incorporating donor doping into Mg3Sb1.5Bi0.5 to achieve n-type conductivity is one of the crucial strategies for performance enhancement. In pursuit of higher thermoelectric performance, we herein report co-doping with Te and Y to optimize the thermoelectric properties of Mg3Sb1.5Bi0.5, achieving a peak ZT exceeding 1.7 at 703 K in Y0.01Mg3.19Sb1.5Bi0.47Te0.03.

Mar 11, 2023 | onlinelibrary.wiley.com | Wei-Di Liu |Physics Queensland |De-Zhuang Wang |Liang-Cao Yin

1 Introduction Thermoelectric technology, enabling direct conversion between electricity and heat, provides a sustainable method to alleviate the energy crisis.[1-3] The thermoelectric conversion efficiency (η) depends on the dimensionless figure-of-merit zT, defined as zT = S2σT/(κl+κe), where S, σ, T, κl, and κe are the Seebeck coefficient, the electrical conductivity, the absolute temperature, the lattice thermal conductivity, and the electrical thermal conductivity, respectively.[4-6] As...