Fig. 4: The carrier recombination dynamic of QDs. | Light: Science & Applications

Fig. 4: The carrier recombination dynamic of QDs.

From: High efficiency pure blue perovskite quantum dot light-emitting diodes based on formamidinium manipulating carrier dynamics and electron state filling

Fig. 4

Femtosecond transient absorption spectroscopy under 400 nm pump pulse of a CsPb(Cl0.5Br0.5)3 QDs and b 0.2 M FA-doped CsPb(Cl0.5Br0.5)3 QDs; c the comparison of bleaching recovery kinetics of two samples (λex = 400 nm) monitored at their bleaching maximum value; d the mechanism of carrier relaxation for excitation above the bandgap

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