Green Synthesis of CuInS₂/ZnS Nanocrystals with High Photoluminescence and Stability

Table 1

Comparison of Zn/Cu atomic ratio of prepared samples by ICP-OES and XPS.

Zn/Cu feeding molar ratio	Zn/Cu atomic ratio by ICP-OES	Zn/Cu atomic ratio by XPS
2	1.5	1.7
4	3.1	4.8
8	6.3	7.0
16	13.0	18.7