260 C produces CIS NCs of higher quality (i.e., relatively high QYs) within a short and controllable time frame. The relative high QYs of CIS NCs were used as a reference to explore how Cd and Zn in CIS NCs affect NC QYs. In addition, no significant PL spectral shift was observed at 260 C (where the shift is only*10 nm, Fig. 1b). At 260 C, DDTs may tend
to be in a free or unbound status, and thus less able to coordinate copper or indium atoms on the NC surface to stabilize NCs. As a result, NCs precipitate quickly, before further growth. A stable PL helps examination of the effects of Cd and Zn in CIS NCs on wavelength tuning. Since a reaction temperature of 260 C is sufficient to promote the alloying of Cd and Zn into