Symmetry breaking in Ge 1− x Mn x Te and the impact on thermoelectric transport

JM Adamczyk, FA Bipasha, GA Rome… - Journal of Materials …, 2022 - pubs.rsc.org
Germanium telluride is a high performing thermoelectric material that additionally serves as
a base for alloys such as GeTe–AgSbTe2 and GeTe–PbTe. Such performance motivates …

Origin of the High Performance in GeTe-Based Thermoelectric Materials upon Bi2Te3 Doping

D Wu, LD Zhao, S Hao, Q Jiang, F Zheng… - Journal of the …, 2014 - ACS Publications
As a lead-free material, GeTe has drawn growing attention in thermoelectrics, and a figure of
merit (ZT) close to unity was previously obtained via traditional doping/alloying, largely …

Discordant nature of Cd in GeTe enhances phonon scattering and improves band convergence for high thermoelectric performance

E Nshimyimana, S Hao, X Su, C Zhang, W Liu… - Journal of Materials …, 2020 - pubs.rsc.org
GeTe-based thermoelectric materials tend to be naturally heavily hole doped because of Ge
lattice vacancies, and this complicates efforts to improve the figure of merit ZT. Herein, we …

Atomic disordering advances thermoelectric group IV telluride alloys with a multiband transport

J Tang, Z Yao, Y Wu, S Lin, F Xiong, W Li, Y Chen… - Materials Today …, 2020 - Elsevier
Minimization of lattice thermal conductivity plays a key role in advancing thermoelectrics, a
typical strategy of which is the introduction of atomic disorder for strong phonon scattering …

Rhombohedral to cubic conversion of GeTe via MnTe alloying leads to ultralow thermal conductivity, electronic band convergence, and high thermoelectric …

Z Zheng, X Su, R Deng, C Stoumpos… - Journal of the …, 2018 - ACS Publications
In this study, a series of Ge1–x Mn x Te (x= 0–0.21) compounds were prepared by a melting–
quenching–annealing process combined with spark plasma sintering (SPS). The effect of …

Boosting the thermoelectric performance of GeTe by manipulating the phase transition temperature via Sb doping

Y Jin, D Wang, Y Qiu, LD Zhao - Journal of Materials Chemistry C, 2021 - pubs.rsc.org
It is well known that the thermoelectric performance of GeTe is difficult to manipulate due to
its intrinsic overhigh carrier concentration and phase transition. Herein, we demonstrate that …

High-performance GeTe thermoelectrics in both rhombohedral and cubic phases

J Li, X Zhang, X Wang, Z Bu, L Zheng… - Journal of the …, 2018 - ACS Publications
GeTe experiences phase transition between cubic and rhombohedral through distortion
along the [111] direction. Cubic GeTe shares the similarity of a two-valence-band structure …

[PDF][PDF] Promising cubic MnGeTe2 thermoelectrics

B Zhou, W Li, X Wang, J Li, L Zheng, B Gao… - Science China …, 2019 - researchgate.net
Semiconducting cubic group IV monotellurides, including PbTe and SnTe, have historically
led most of the advancements in thermoelectrics. Recently, noncubic ones such as GeTe …

Enhanced thermoelectric performance in GeTe-Sb2Te3 pseudo-binary via lattice symmetry regulation and microstructure stabilization

X Qi, Y Yu, X Xu, J Wang, F Zhang, B Zhu, J He… - Materials Today …, 2021 - Elsevier
Abstract Pseudo-binary GeTe-rich Sb 2 Te 3 (GeTe) n materials recently exhibited promising
thermoelectric performance at intermediate temperatures (500–800 K), largely due to the …

[HTML][HTML] Band and scattering tuning for high performance thermoelectric Sn1− xMnxTe alloys

W Li, Z Chen, S Lin, Y Chang, B Ge, Y Chen, Y Pei - Journal of Materiomics, 2015 - Elsevier
The thermoelectric figure of merit zT of SnTe, an analogue to PbTe, has long been known to
be about 0.6, mainly due to its single band transport behavior. Similar to what has been …