Perovskite Solar Cells: Indium-Free Perovskite Solar Cells Enabled by Impermeable Tin-Oxide Electron Extraction Layers (Adv. Mater. 27/2017)

In article number 1606656, Yiwang Chen, Thomas Riedl, and co-workers report perovskite solar cells based on an ITO-free bottom electrode. The impermeable SnO_x electron-extraction layer is a hole blocker and at the same time it protects the ultrathin silver bottom electrode against corrosion due to the halide-containing precursors of the perovskite.

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