Wen, XiaoMing; Dao, Lap Van; Hannaford, Peter; Mokkapati, Sudha; Tan, Hoe Hark; Jagadish, Chennupati
The electron dynamics in modulation p-doped InGaAs/GaAs self-assembled quantum dots have been studied by time-integrated and time-resolved up-conversion photoluminescence. A significant state filling effect is observed with exclusion of the phonon bottleneck effect. The rise time and decay time are found to vary with the excitation intensity for the ground state and excited states of the quantum dots. In the low intensity regime the rise time decreases with increasing excitation intensity...[Show more]
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