Abstract
AbstractThermoelectric materials have long been proven to be effective in converting heat energy into electricity and vice versa. Since semiconductors have been used in the thermoelectric field, much work has been done to improve their efficiency. The interrelation between their thermoelectric physical parameters (Seebeck coefficient, electrical conductivity, and thermal conductivity) required special tailoring in order to get the maximum improvement in their performance. Various approaches have been reported in the research for developing thermoelectric performance, including doping and alloying, nanostructuring, and nanocompositing. Among different types of thermoelectric materials, layered chalcogenide materials are unique materials with distinctive properties. They have low self-thermal conductivity, and their layered structure allows them to be modified easily to improve their thermoelectric performance. In this review, basic knowledge of thermoelectric concepts and challenges for enhancing the figure of merit is provided. It discusses briefly different groups of layered chalcogenide thermoelectric materials with their structure and thermoelectric properties. It also reports different approaches in the literature for improving their performance and the recent progress done in this field. It highlights graphene as a promising nano additive to layered chalcogenide materials’ matrix and shows its effect on enhancing their figure of merit.
Highlights
Thermoelectric materials have long been proven to be effective in converting heat energy into electricity and vice versa
An enhancement in thermoelectric performance was achieved with a 30% increase in ZT at 823 K
This paper gave an overview of the properties and structure of layered chalcogenide thermoelectric materials as well as the progress that has been achieved in measuring their thermoelectric performance
Summary
Abstract: Thermoelectric materials have long been proven to be effective in converting heat energy into electricity and vice versa. Among different types of thermoelectric materials, layered chalcogenide materials are unique materials with distinctive properties They have low self-thermal conductivity, and their layered structure allows them to be modified to improve their thermoelectric performance. The aim of this review is to conduct a comprehensive study of layered chalcogenide materials and the recent work and progress made for improving their figure of merit It discusses thermoelectric properties and different types of thermoelectric materials. It discusses in detail, layered chalcogenide thermoelectric materials, by giving a basic knowledge of their structure and thermoelectric properties It summarizes the effect of different mechanisms used in the literature to improve their ZT, including doping and alloying, nanostructuring, and nanocompositing. Any stacking faults in the layered structure could result in a further reduction in lattice thermal conductivity, whereas in the microscale, the highly oriented microstructure improves the power factor by enhancing carriers’ mobility in the in-plane directions [18]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
