Half-Heusler thermoelectrics: studying new paradigms via defects, entropy, and band engineering

Abstract

Thermoelectric research focuses on materials that convert temperature differences directly into electrical energy, offering a promising pathway for sustainable energy production. By harnessing waste heat from industrial processes, vehicles, and even renewable sources, thermoelectric devices can enhance energy efficiency and reduce greenhouse gas emissions. Recent advancements in material science, particularly in nanostructured and complex materials, have significantly improved the efficiency of thermoelectric systems. The integration of these technologies has the potential to support a transition to cleaner energy, promote energy independence, and drive innovation in various sectors, including automotive and consumer electronics. As the global demand for clean energy solutions intensifies, thermoelectric research stands at the forefront of addressing environmental challenges while fostering economic growth. This thesis work mostly focus on developing materials for high temperature application. Half Heusler (hH) materials exhibit high melting temperatures which makes them suitable for mid-to-high temperature range extending from about 500 K to 1200 K.