fig17

Figure 17. (A) Electronic structure and; (B) projected density of states of h-Cd₈S₆PCl show an isolated band from P 3p-orbitals at the top of the valence band. Comparison of the density of states for Zn₈S₆AB and pristine ZnS in (C) hexagonal and; (D) cubic structures. High-resolution XPS spectra: (E) P 2p and; (F) Cl 2p in P, Cl-substituted CdS; (G) P 2p and; (H) Cl 2p in P, Cl-substituted ZnS; (I) N 1s and; (J) F 1s in N, F co-substituted ZnS; (K, L) Electronic absorption spectra of pristine CdS vs. P, Cl co-doped CdS prepared by two methods. Comparison of absorption spectra: (M) P, Cl-substituted ZnS and; (N) N, F-substituted ZnS; (O) Visible-light-induced hydrogen evolution by CdS/Pt and CdS_1-x-yP_xCl_y/Pt over time in Na₂S-Na₂SO₃. Copyright 2015, Wiley Online Library^[80].ZnS: Zinc sulfide; XPS: X-ray photoelectron spectroscopy.