2018年11月1日 · In p-type PbTe, the strategies of band convergence, band alignment and density of state (DOS) distortion are more effective to achieve high electrical transport properties. By contrast,...

We explored enhancing the Seebeck coefficient through a distortion of the electronic density of states and report a successful implementation through the use of the thallium impurity levels in lead telluride (PbTe). Such band structure engineering results in a doubling of zT in p-type PbTe to above 1.5 at 773

2016年6月1日 · A maximum zT of ∼2.2 at 820 K was achieved in PbTe 0.8 Se 0.2 with 8% MgTe. High zT of ∼2.0 can also be achieved even in such a large dimension (∼200 g, ϕ 42 mm × 18 mm) bulk sample. These results highlight the multi-functional roles of quarternary alloying with Mg and Se, and demonstrate the realistic prospect of large-scale commercial ...

2014年2月17日 · The (PbTe) 1–2x (PbSe) x (PbS) x system is an excellent platform to study phase competition between entropically driven atomic mixing (solid solution behavior) and enthalpy-driven phase separation. We observe that the thermoelectric properties of the PbTe–PbSe–PbS 2% Na doped are superior to those of 2% …

2022年1月1日 · Remarkable peak ZT of ~1.5 is achieved in Pb 0.975 Cr 0.025 Te-1.5% Ag 2 Te. The development of n-type high-performance PbTe thermoelectric materials for matching its p-type counterparts is an urgent matter to expand its practical applications.

2023年5月1日 · Here, we report an insight that in Te-rich environment, PbTe doped with 4%Na and 2%Sn achieve the maximum zTmax of ∼2.0 at 773 K and the average zTavg between 323 K and 773 K of ∼1.21.

2021年10月19日 · In recent decades, the p-type PbTe has excellent performance, and the maximum value of zT can reach about 2.5 and the average of zT is about 1.4. However, the maximum value of zT for n-type PbTe is only about 1.8 and the average value of zT is about 1 (Luo et al., 2019), as shown in Figures 1C,D.

我们样品的热电优值（ZT）峰值和平均热电优值ZT ave 值都要优于文献值。 这一系列研究改善了PbTe材料体系中n型材料热电性能较低的现状，使PbTe在中温区具有极大的应用前景。

2025年3月20日 · The dislocation-induced strains and converged bands in PbTe alloys lead to a realization of an extraordinary figure of merit zT ~ 2.5 in Na 0.03 Eu 0.03 Cd 0.03 Pb 0.91 Te alloy at 850 K. Within the PbTe thermoelectric manipulations, enhancing transport properties is a vital factor to realize high thermoelectric conversion efficiency.

2014年2月26日 · We observe that the thermoelectric properties of the PbTe-PbSe-PbS 2% Na doped are superior to those of 2% Na-doped PbTe-PbSe and PbTe-PbS, respectively, achieving a ZT ≈2.0 at 800 K. The material exhibits an increased the power factor by virtue of valence band modification combined with a very reduced lattice thermal conductivity deriving ...