Improved thermoelectric properties of WS<sub>2</sub>–WSe<sub>2</sub> phononic crystals: insights from first-principles calculations
Dan Han, Xiaoheng Yang, Mu Du, Gongming Xin, Jingchao Zhang, Xinyu Wang, Lin Cheng
Abstract
values of the PCH2 structure can reach 2.53 and 4.54 with p-type doping along the x and y directions, which are 2.66 and 6.75 times higher than those of the SL1 monolayer. This work provides a new strategy to obtain higher thermoelectric performance and demonstrates the potential applications of phononic crystals in TMDC-based nanoelectronic devices.
Topics & Concepts
Thermoelectric effectMaterials scienceBoltzmann constantCondensed matter physicsThermoelectric materialsAcoustic metamaterialsOptoelectronicsBand gapThermodynamicsPhysicsAdvanced Thermoelectric Materials and Devices2D Materials and ApplicationsThermal properties of materials