dichalcogenides, specifically molybdenum diselenide (MoS e 2), using resonant two-color
pump-probe spectroscopy. When resonantly pumping the exciton transition, trions are
generated on a picosecond time scale through exciton-electron interaction. As the pump
energy is tuned from the high energy to low energy side of the inhomogeneously broadened
exciton resonance, the trion formation time increases by∼ 50%. This feature can be …