Roadmap for phase change materials in photonics and beyond

P Prabhathan, KV Sreekanth, J Teng, JH Ko, YJ Yoo… - Iscience, 2023 - cell.com
Summary Phase Change Materials (PCMs) have demonstrated tremendous potential as a
platform for achieving diverse functionalities in active and reconfigurable micro …

Strong charge carrier scattering at grain boundaries of PbTe caused by the collapse of metavalent bonding

R Wu, Y Yu, S Jia, C Zhou, O Cojocaru-Mirédin… - Nature …, 2023 - nature.com
Grain boundaries (GBs) play a significant role in controlling the transport of mass, heat and
charge. To unravel the mechanisms underpinning the charge carrier scattering at GBs …

Do** by design: enhanced thermoelectric performance of GeSe alloys through metavalent bonding

Y Yu, C Zhou, T Ghosh, CF Schön, Y Zhou… - Advanced …, 2023 - Wiley Online Library
Do** is usually the first step to tailor thermoelectrics. It enables precise control of the
charge‐carrier concentration and concomitant transport properties. Do** should also turn …

Non-volatile tunable optics by design: from chalcogenide phase-change materials to device structures

D Wang, L Zhao, S Yu, X Shen, JJ Wang, C Hu… - Materials Today, 2023 - Elsevier
Integration of chalcogenide phase-change materials (PCMs) with planar multilayer
structures, metasurfaces, waveguides and photonic integrated circuits has sparked …

The Myth of “Metavalency” in Phase‐Change Materials

RO Jones, SR Elliott, R Dronskowski - Advanced Materials, 2023 - Wiley Online Library
Phase‐change memory materials (PCMs) have unusual properties and important
applications, and recent efforts to find improved materials have focused on their bonding …

Metavalent Bonding-Mediated Dual 6s2 Lone Pair Expression Leads to Intrinsic Lattice Shearing in n-Type TlBiSe2

I Maria, R Arora, M Dutta… - Journal of the …, 2023 - ACS Publications
Metavalent bonding has attracted immense interest owing to its capacity to impart a distinct
property portfolio to materials for advanced functionality. Coupling metavalent bonding to …

Two-step phase manipulation by tailoring chemical bonds results in high-performance GeSe thermoelectrics

W Yao, Y Zhang, T Lyu, W Huang, N Huang, X Li… - The Innovation, 2023 - cell.com
In thermoelectrics, phase engineering serves a crucial function in determining the power
factor by affecting the band degeneracy. However, for low-symmetry compounds, the …

Metavalent Bonding in Layered Phase‐Change Memory Materials

W Zhang, H Zhang, S Sun, X Wang, Z Lu… - Advanced …, 2023 - Wiley Online Library
Metavalent bonding (MVB) is characterized by the competition between electron
delocalization as in metallic bonding and electron localization as in covalent or ionic …

Bonding Analyses in the Broad Realm of Intermetallics: Understanding the Role of Chemical Bonding in the Design of Novel Materials

LS Reitz, J Hempelmann, PC Müller… - Chemistry of …, 2024 - ACS Publications
The design of solids with tailored material properties requires a thorough understanding of
their electronic structures. Examining the latter typically includes chemical-bonding …

Decorated dislocations lead to dynamically optimized thermoelectric performance in N-type PbTe

ZY Huang, F Wang, C Jung, S Zhang, F Zu… - Materials Today …, 2023 - Elsevier
A high thermoelectric energy conversion efficiency requires a large power factor and a low
thermal conductivity over a broad temperature range. Optimizing the temperature-dependent …