“…Compared with Figure 2a–c and Figure 1a–c, it can be seen that the CdS nanoparticles in the thin films were melted together, which was in accordance with the previous report. [ 14 ] The R q of CdS thin films on the FTO increased to 16.5 nm of 0.72 m , 17.5 nm of 0.59 m , and 18.9 nm of 0.46 m , also increasing with the decrease of ammonia concentration (the corresponding AFM images are shown in Figure S3, Supporting Information). The energy‐dispersive spectrometer (EDS) analysis revealed that the atomic ratio of Cl:Cd in the CdS thin films was 0.10:1 of 0.72 m , 0.12:1 of 0.59 m , and 0.15:1 of 0.46 m from Figure S4, Supporting Information (the X‐ray diffraction [XRD] and UV–vis–NIR of the CdS thin films are also provided in Figure S5 and S6, Supporting Information).…”