Figure 4: TEM and composition mapping images of a cross-sectioned CZTSSe solar device consisting of Mo/Mo(S,Se)X/CZTSSe/CdS/TCO (i-ZnO/ITO). | Scientific Reports

Figure 4: TEM and composition mapping images of a cross-sectioned CZTSSe solar device consisting of Mo/Mo(S,Se)X/CZTSSe/CdS/TCO (i-ZnO/ITO).

From: Band-gap-graded Cu2ZnSn(S1-x,Sex)4 Solar Cells Fabricated by an Ethanol-based, Particulate Precursor Ink Route

Figure 4

The elemental map (in the same scale) revealed aggregates in the CZTSSe layer near the back contact at the interface between the CZTSSe and CdS/TCO layer (the upper image) and near the back contact (the bottom image). Zn(S,Se) aggregates are indicated by dotted circles.

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