Fig. 4: XPS analysis of Cd/CdIn2S4@Ch quantum dots.

a Survey spectrum: short scan spectra of (b) Cd 3d, (c) In 3d, (d) Cd 3d5/2, (e) S 2p, (f) C 1s, (g) O 1s, and (h) N 1s.

a Survey spectrum: short scan spectra of (b) Cd 3d, (c) In 3d, (d) Cd 3d5/2, (e) S 2p, (f) C 1s, (g) O 1s, and (h) N 1s.