fig5
From: Enhanced efficiency of Sb2S3 solar cells via heterojunction interfacial MgCl2-CdCl2 mixed treatment
Figure 5. XPS spectra of (A) CdCl2-treated and (B) MgCl2-M-treated CdS films; XPS spectra of Sb2S3 films on (C) CdCl2-treated and (D) MgCl2-M-treated CdS films. Energy level diagrams of (E) the CdCl2 and (F) MgCl2-M treated the device. XPS: X-ray photoelectron spectroscopy; CdS: cadmium sulfide; FTO: fluorine-doped tin oxide.
