Extended Data Fig. 1: Transmission electron microscopy (TEM) measurements of undoped and Mn-doped PbSe/CdSe QDs.
From: Spin-exchange carrier multiplication in manganese-doped colloidal quantum dots
The TEM images and size distributions of (a, b) the Mn-doped (sample ‘Mn-1’) and (c, d) the reference, undoped (sample ‘Un’) PbSe/CdSe core/shell QDs. Red curves are Gaussian fits of size distributions shown by black vertical bars. R is the average overall radius of the QDs and δR is the standard deviation. Mn-doped QDs have a slightly larger size than undoped QDs. This is due to addition of Mn-Se units during the diffusion doping process, which leads to the increase of the overall size of the QDs.
