“…Dalton Transactions X-ray photoelectron spectroscopy (XPS) measurements were performed to clarify the chemical composition, valence states, and electron transfer pathways of samples. 45,46 In the XPS analysis of CZS, SS, and 5-SS-CZS, the band energy of the C 1s peak of 284.8 eV was used as the standard reference value. As shown in Fig.…”