Influence factors and mechanism of emission of ZnS:Cu nanocrystals*
Chu Xue-Yinga), Wang Xin-Nonga), Li Jin-Hua†a), Yao Dana), Fang Xuana),b), Fang Fanga),c), Wei Zhi-Pengb), Wang Xiao-Huab)
       
(a) Emission spectra of ZnS:Cu nanocrystals prepared under Zn2+:S2 ratios of 5:2, 1:1, and 5:8. Gaussian fitting results of the emission spectrum marked by (b) 5:2 and (c) 5:8.