热电材料的载流子迁移率优化

赵立东, 王思宁, 肖钰

Carrier Mobility Optimization in Thermoelectric Materials

ZHAO Li-Dong, WANG Sining, XIAO Yu

图5 能带能量对齐提升载流子迁移率与热电性能
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(b) μ as a function of n
(c) quality factor (B) as a function of T
(d) ZT as a function of T

Fig.5 Strategy of band alignment in energy (p-type: PbS-(CdS^[8]/Ag₂S^[83]/CaS^[8]/SrS^[8]), n-type: PbS-(PbTe^[30]/Sb₂S₃^[84]/Pb(Pb, Sb)S₂^[85])(a) schematic of the relationship between band alignment and carrier mobility (C—conduction band, V—valence band, $E_{g}^{'}$ —band gap of second phase, E_g—band gap of matrix, ΔE—energy offset of conduction band or valence band between matrix and second phase)