Figure 16.
The graph illustrates the efficiency of zinc sulfide as a function of the ratios of zinc to tin on the vertical axis, labelled Z n slash S n, ranging from 0.5 to 3.5, and copper to the sum of zinc and tin on the horizontal axis, labelled C u slash Z n plus S n, ranging from 0.2 to 1.8. Four distinct regions are demarcated, indicating varying compositions of copper and zinc, labelled as C u poor Z n rich, C u rich Z n rich, C u rich Z n poor, and C u poor Z n poor. Specific data points marked by different shapes, including stars for an efficiency of 8.91 percent, circles for 10.55 percent, pentagons for 9.27 percent, and squares for 5.67 percent, show different efficiencies for samples labelled C Z T S A D, C Z T S 340, C Z T S 360, and C Z T S 380. Arrows point towards these samples from their respective positions on the graph, helping to identify the efficiency values and corresponding compositions. The regions are colour coded, with areas of efficiency values represented vividly.ZnS efficiency plotted against map composition of CZTS annealed at different temperature