Fig. 3: Hot electron dynamics in neutral QDs. | Nature Communications

Fig. 3: Hot electron dynamics in neutral QDs.

From: Spin blockade and phonon bottleneck for hot electron relaxation observed in n-doped colloidal quantum dots

Fig. 3

Transient absorption (TA) spectra of neutral CdSe QDs probed at indicated time delays following excitations at a 1Se-1S3/2,h and b 1Pe-1P3/2,h transitions by 624 and 547 nm pulses, respectively. The 1S bleach, 1P bleach and PIA features are indicated in b. c TA kinetics probed at the 1S bleach (~617 nm; red circle), 1P bleach (~544 nm; blue square) and PIA (~646 nm; green triangle) features in the case of 1Pe-1P3/2,h excitation. Black solid lines are simultaneous fits to a single-exponential relaxation time constant of 0.21 ps.

Back to article page