Interlayer Exciton Transport in MoSe<sub>2</sub>/WSe<sub>2</sub> Heterostructures
Zidong Li, Xiaobo Lu, Darwin F. Cordovilla Leon, Zhengyang Lyu, Hongchao Xie, Jize Hou, Yanzhao Lu, Xiaoyu Guo, Austin Kaczmarek, Takashi Taniguchi, Kenji Watanabe, Liuyan Zhao, Li Yang, Parag B. Deotare
Abstract
) heterostructures with different twist angles. We observe the localization of interlayer excitons at low temperature and the temperature-activated diffusivity as a function of twist angle and hence attribute it to the deep periodic potentials arising from the moiré superlattice. We further support the observations with theoretical calculations, Monte Carlo simulations, and a three-level model that represents the exciton dynamics at various temperatures.
Topics & Concepts
Tungsten diselenideExcitonSuperlatticeMaterials scienceHeterojunctionCondensed matter physicsMonolayerTransition metalMolecular physicsNanotechnologyPhysicsChemistryBiochemistryCatalysis2D Materials and ApplicationsAdvanced Thermoelectric Materials and DevicesPerovskite Materials and Applications