The Potential of Arsenic‐based Zintl Phases as Thermoelectric Materials: Structure & Thermoelectric Properties

Abstract

Zintl phase thermoelectric materials have generated tremendous interest due to possessing structural features conducive to high thermoelectric performances. On the other hand, both arsenic and arsenic‐based compounds have become attractive in electronics due to having interesting properties like narrow bandgap, tunable carrier concentration, and non‐centrosymmetric structures. The structure of arsenic compounds plays a telling role in determining their efficiency as thermoelectric materials. They also show the scope to be doped as both p‐ and n‐type conduction providing exciting new materials with applications as a full module. These attributes make them appealing as thermoelectric materials for further research. This short review is an overview of the different structures of arsenic‐based Zintl ternary materials that have potential to be excellent thermoelectric materials.

Advancing Heteroanionicity in Zintl Phases: Crystal Structures, Thermoelectric and Magnetic Properties of Two Quaternary Semiconducting Arsenide Oxides, Eu8Zn2As6O and Eu14Zn5As12O

“…The closest structurally related compounds to Zintl oxyarsenides are their oxygen-free counterparts – Zintl arsenides. Although semiconducting properties of Zintl oxyarsenides are not well established, being limited to a few structure types, ,, compositionally simpler Eu-based Zintl arsenides are known for their exotic physical properties, such as colossal magnetoresistance, complex magnetic ordering, and thermoelectric performance. ,,− Given their similar structural chemistry, heteroanionic Zintl oxypnictides also present a promising avenue for probing fascinating physical phenomena, thereby justifying the research efforts. As discussed in Section , we obtained sufficiently large single crystals of the Eu 14 Zn 5 As 12 O, which were suitable for physical property studies.…”