Fig. 7
From: Colloidal quantum dots for thermal infrared sensing and imaging
(Figure obtained with permission from ref. [44]. Copyright 2014 American Chemical Society)
Synthesis and characterization of HgSe CQDs. a TEM image of HgSe CQDs using HgCl2 and selenourea as the precursors and b XRD data with peaks matching HgSe reference data. c Absorption and d PL spectra of HgSe CQDs synthesized for various amounts of time. Increased time leads to larger particles which red shifts the absorption and PL peaks due to the reduction of interband and intraband transition energies. S deposition is shown to verify the doping influence on the optical properties