Enhanced atomic ordering leads to high thermoelectric performance in AgSbTe <sub>2</sub>
Subhajit Roychowdhury, Tanmoy Ghosh, Raagya Arora, Manisha Samanta, Lin Xie, Niraj K. Singh, Ajay Soni, Jiaqing He, Umesh V. Waghmare, Kanishka Biswas
Abstract
enhances cationic ordering, which simultaneously improves electronic properties by tuning disorder-induced localization of electronic states and reduces lattice thermal conductivity through spontaneous formation of nanoscale (~2 to 4 nanometers) superstructures and coupling of soft vibrations localized within ~1 nanometer around cadmium sites with local strain modulation. The strategy is applicable to most other thermoelectric materials that exhibit inherent atomic disorder.
Topics & Concepts
Thermoelectric effectThermoelectric materialsThermal conductivityAntimonyDopingMaterials scienceElectricityElectrical resistivity and conductivityCadmium telluride photovoltaicsEngineering physicsCondensed matter physicsNanotechnologyOptoelectronicsThermodynamicsPhysicsMetallurgyComposite materialQuantum mechanicsAdvanced Thermoelectric Materials and DevicesChalcogenide Semiconductor Thin FilmsQuantum Dots Synthesis And Properties