Beyond phase-change materials: Pseudo-binary (GeTe) n (Sb2Te3) m alloys as promising thermoelectric materials

Y Jiang, TR Wei, X Shi - Materials Today Physics, 2023 - Elsevier
Exploring new materials with complex structures and excellent transport properties has
always been a fascinating topic in thermoelectrics. Recently,(GeTe) n (Sb 2 Te 3) m-based …

Reversible Crystalline‐Crystalline Transitions in Chalcogenide Phase‐Change Materials

B Liu, K Li, J Zhou, Z Sun - Advanced Functional Materials, 2024 - Wiley Online Library
Phase‐change random access memory (PCRAM) is one of the most technologically mature
candidates for next‐generation non‐volatile memory and is currently at the forefront of …

Prediction of thermoelectric performance for layered IV-V-VI semiconductors by high-throughput ab initio calculations and machine learning

Y Gan, G Wang, J Zhou, Z Sun - NPJ Computational Materials, 2021 - nature.com
Abstract Layered IV-V-VI semiconductors have immense potential for thermoelectric (TE)
applications due to their intrinsically ultralow lattice thermal conductivity. However, it is …

Stacking Fault-Induced Minimized Lattice Thermal Conductivity in the High-Performance GeTe-Based Thermoelectric Materials upon Bi2Te3 Alloying

J Li, Y Xie, C Zhang, K Ma, F Liu, W Ao… - … applied materials & …, 2019 - ACS Publications
Materials with low lattice thermal conductivity (κlat) are crucial for the applications of thermal
insulation and thermoelectric (TE) energy conversion. Stacking fault (SF)-induced phonon …

The interplay between Peierls distortions and metavalent bonding in IV–VI compounds: comparing GeTe with related monochalcogenides

JY Raty, M Wuttig - Journal of Physics D: Applied Physics, 2020 - iopscience.iop.org
In this article, we revisit bonding in crystalline GeTe, a simple binary alloy that is also a
popular phase change material, and use an ab initio approach that goes beyond the usual …

How to Identify Lone Pairs, Van der Waals Gaps, and Metavalent Bonding Using Charge and Pair Density Methods: From Elemental Chalcogens to Lead …

JY Raty, C Gatti, CF Schön… - physica status solidi (RRL) …, 2021 - Wiley Online Library
Lone pairs explain the structure of many molecular solids, as well as the chain‐like or
layered structures encountered in many chalcogenide crystals. Such chalcogenides have …

Direct atomic identification of cation migration induced gradual cubic-to-hexagonal phase transition in Ge2Sb2Te5

Y Zheng, Y Wang, T Xin, Y Cheng, R Huang… - Communications …, 2019 - nature.com
Abstract GeTe-Sb2Te3 pseudobinary system, especially Ge2Sb2Te5 alloy, is the most
desirable material to be commercialized in phase change random access memory. Directly …

Quasi-two-dimensional GeSbTe compounds as promising thermoelectric materials with anisotropic transport properties

TR Wei, P Hu, H Chen, K Zhao, P Qiu, X Shi… - Applied Physics …, 2019 - pubs.aip.org
Pseudo-binary GeSbTe alloys, best known as phase-change materials, are quasi-two-
dimensional semiconductors in their stable trigonal phases with high electrical conductivity …

Remarkable anisotropy in rhombohedral Ge2Sb2Te5 compound: A promising thermoelectric material with multiple conduction bands and acoustic-optical branches …

J Miao, P Wang, P Zhou, S Huang, D Qian… - Journal of Alloys and …, 2022 - Elsevier
First-principles calculations and Boltzmann transport theory are used to evaluate the
electronic structure and thermoelectric properties of the high-temperature rhombohedral Ge …

New two-dimensional Ge–Sb–Te semiconductors with high photovoltaic performance for solar energy conversion

Y Gan, N Miao, J Zhou, Z Sun - Journal of Materials Chemistry C, 2022 - pubs.rsc.org
Atomically thin semiconductors with superior electronic and optical properties play a critical
role in the continuous advances of electronic and optoelectronic devices. Here, using first …