It is also worthy of discussing the impacts of Cd and Zn on s1, s2, ands3 parameters ofNCs. FromTable 3, for all coreNCs, it canbeseenthat s1 (or s2 or s3) ofCd–CIS NCs is comparable to that ofCIS NCs, but the difference of s1 (or s2 or s3) between Zn–CIS NCs and CIS NCs is significant. This suggests that Cd alloying does not significantly influence the energy levels of all states (surface trap states, intrinsic trap states, donor states, and acceptor states) but Zn alloying does. This may explain
why Cd alloying does not cause a pronounced luminescence wavelength shift whereas Zn alloying does.