Regulation of Ge vacancies through Sm doping resulting in superior thermoelectric performance in GeTe

T Zhang, S Deng, X Zhao, X Ruan, N Qi… - Journal of Materials …, 2022 - pubs.rsc.org
A high thermoelectric figure of merit ZT of 2.5 at 730 K is achieved in p-type Ge1− xSmxTe
through synergetic optimization of electrical and thermal transport properties. Sm doping …

Bi–Zn codoping in GeTe synergistically enhances band convergence and phonon scattering for high thermoelectric performance

Z Guo, Q Zhang, H Wang, X Tan, F Shi… - Journal of Materials …, 2020 - pubs.rsc.org
As an attractive lead-free thermoelectric candidate, GeTe-based materials have been
intensively studied in recent years. However, the ZT value of pristine GeTe is limited around …

Computational prediction of high thermoelectric performance in hole doped layered GeSe

S Hao, F Shi, VP Dravid, MG Kanatzidis… - Chemistry of …, 2016 - ACS Publications
Thermoelectric materials enable direct conversion between thermal and electrical energy
and provide a viable route for power generation and electric refrigeration. In this paper, we …

Grain boundary complexions enable a simultaneous optimization of electron and phonon transport leading to high‐performance GeTe thermoelectric devices

C Zhang, G Yan, Y Wang, X Wu, L Hu… - Advanced energy …, 2023 - Wiley Online Library
Grain boundaries (GBs) form ubiquitous microstructures in polycrystalline materials which
play a significant role in tuning the thermoelectric figure of merit (ZT). However, it is still …

Realizing high thermoelectric performance in GeTe through optimizing Ge vacancies and manipulating Ge precipitates

Y Jin, Y Xiao, D Wang, Z Huang, Y Qiu… - ACS Applied Energy …, 2019 - ACS Publications
Recent vast reinvestigations on GeTe, a promising thermoelectric material at medium
temperature, have triggered enormous enthusiasm in the thermoelectric community again …

[HTML][HTML] Enhancing thermoelectric performance by Fermi level tuning and thermal conductivity degradation in (Ge1−xBix)Te crystals

PC Wei, CX Cai, CR Hsing, CM Wei, SH Yu, HJ Wu… - Scientific reports, 2019 - nature.com
In this work, a high thermoelectric figure of merit, zT of 1.9 at 740 K is achieved in Ge1−
xBixTe crystals through the concurrent of Seebeck coefficient enhancement and thermal …

Raising the solubility of Gd yields superior thermoelectric performance in n-type PbSe

Q Deng, Y Zhong, C Zhao, F Zhang, CL Xia… - Journal of Materials …, 2022 - pubs.rsc.org
Chemical doping is an indispensable means of improving the performance of thermoelectric
materials, while one bottleneck for maximizing optimization is the low solubility of dopants …

High Thermoelectric Performance and Enhanced Mechanical Stability of p-type Ge1–xSbxTe

S Perumal, S Roychowdhury, DS Negi… - Chemistry of …, 2015 - ACS Publications
High thermoelectric figure of merit, zT, of∼ 1.85 at 725 K along with significant cyclable
temperature stability was achieved in Pb-free p-type Ge1–x Sb x Te samples through …

Extremely Low Thermal Conductivity in Thermoelectric Ge0.55Pb0.45Te Solid Solutions via Se Substitution

J Li, H Wu, D Wu, C Wang, Z Zhang, Y Li… - Chemistry of …, 2016 - ACS Publications
In this contribution, we report that an extremely low lattice thermal conductivity can be
achieved in a Ge0. 55Pb0. 45Te-based thermoelectric system through gradually replacing …

[HTML][HTML] Thermoelectric properties of GeSe

X Zhang, J Shen, S Lin, J Li, Z Chen, W Li, Y Pei - Journal of Materiomics, 2016 - Elsevier
The recently reported superior thermoelectric performance of SnSe, motivates the current
work on the thermoelectric properties of polycrystalline GeSe, an analog compound with the …