Improvement of the Thermoelectric Performance of Pseudogap and Narrow-Gap Compounds via Theoretical Calculations
Year: 2018
Type: article
Abstract: This review briefly discusses the relationship between the crystal structures, electronic structures, and thermoelectric properties of materials such as pseudogap quasicrystals and related approximant crystals, narrow-gap binary intermetallic compounds, and lead chalcogenides. The approach used is to identify the materials’ intrinsic physical properties from experimental data and establish a route for tuning their properties based on theoretical models and first-principles calculations. A possible route for improving thermoelectric performance is to use a band engineering approach, such as band convergence and introducing impurity states near the valence and conduction band edges. This approach was successfully applied to TiSi2-type RuGa2 and the lead chalcogenides PbTe and PbSe.
Source: MATERIALS TRANSACTIONS
Author: Yoshiki Takagiwa
Institution: National Institute for Materials Science
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
Funders: Northwestern University, Sumitomo Foundation, University of Tokyo, Murata Science Foundation, Japan Society for the Promotion of Science, Japan Science and Technology Agency, National Institute for Materials Science, Division of Materials Research, Support Program for Starting up Innovation Hub
Awards: Synthesis and evaluation of new thermoelectric materials composed of group-III and transition metal elements, G3445661345, Evaluation of bonding nature in Al-based quasicrystals by positron annihilation spectroscopy, Development of new thermoelectric materials through band structure engineering and understanding structure-properties relationship, Development of environmentally friendly thermoelectric materials based on control of electronic structure and phonon dispersion
OpenAlex ID: W2883538218