The nonlinear expansion of the photoluminescence spot in h-BN encapsulated WSe2 monolayers is dominated by kinetic-energy relaxation of hot excitons, saturating at high density due to Auger heating balancing phonon cooling.
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Hot exciton transport in WSe2 monolayers
The nonlinear expansion of the photoluminescence spot in h-BN encapsulated WSe2 monolayers is dominated by kinetic-energy relaxation of hot excitons, saturating at high density due to Auger heating balancing phonon cooling.