Research Article
Zn-Doped SnO2 Compact Layer for Enhancing Performance of Perovskite Solar Cells
Figure 2
XPS spectra of (a) Zn-SnO2 film and XPS spectra of (b) Sn 3d core level, (c) O 1s core level, and (d) Zn 2p core level peak for the Zn-SnO2 film.
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| (b) |
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