Fig. 3
From: Observation of a phonon bottleneck in copper-doped colloidal quantum dots
Femtosecond hole capturing in Cu-doped QDs. a Time-resolved PL kinetics for CdSe QDs (blue) and X (light red) and CT (dark red) bands in Cu:CdSe QDs. The first 100 ns is in linear scale while the rest is in logarithmic scale. b u-PL kinetics for CdSe QDs (blue) and X band in Cu:CdSe QDs (light red) measured by femtosecond upconversion excited at 400 nm. The gray dashed line (shaded) is the IRF of the system (390 fs). c u-PL kinetics of the CT band of Cu:CdSe QDs excited at 550 nm (dark red circles) and its fit (dark red solid line) by convoluting with the IRF
