Figure 5.
The image features four spectral graphs labelled C Z T S A D, C Z T S 340, C Z T S 360, and C Z T S 380, each illustrating elemental distribution across different samples. Each graph presents a horizontal axis denoting energy levels in kilo electron volts, ranging from 0 to approximately 6, with significant peaks representing various elements such as copper, zinc, sulphur, chlorine, and tin, which are marked on the graphs. The vertical axis indicates counts, with varying scales for each graph. The graphs are presented in a 2 by 2 grid format, facilitating direct comparison across the different conditions applied to the C Z T S samples. Each peak represents a distinct element and its concentration, and the lower sections show a consistent trend of minor peaks. The graphs are primarily red with annotations highlighting elemental positions.EDX spectrum of CZTS-AD (a), CZTS-340 (b), CZTS-360 (c) and CZTS-380 (d)