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Different ultrafast dynamics of neutral and charged excitons in monolayer WS2

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Abstract

We investigate a back-gate-controlled monolayer WS2 device using ultrafast pumpprobe spectroscopy. While gate-induced electrostatic doping does not show impact on the transient dynamics, our experiments reveal dramatic difference for lifetimes of neutral and charged excitons.

© 2020 The Author(s)

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