Fig. 2: Optical properties of QDs. | Nature Communications

Fig. 2: Optical properties of QDs.

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

Fig. 2

a Absorption spectrum of 5.5-nm CdSe QDs (red) and its second derivative spectrum (gray). Four lowest energy transitions are indicated. Inset is a typical transmission electron microscope image of the QDs. b Absorption spectra of the pristine sample (wine), n-doped-1 (orange), n-doped-2 (yellow) and re-neutralized sample (red circles). The average numbers of doped conduction band electrons are ~0.5 and 1.3, respectively, for n-doped-1and n-doped-2.

Back to article page