Fig. 1 | Nature Communications

Fig. 1

From: A chemically inert bismuth interlayer enhances long-term stability of inverted perovskite solar cells

Fig. 1

Chemical reaction of metal-perovskite. a XPS spectra of Pb 4f for fresh and aged samples, including MAPbI3/Bi, MAPbI3/Au, MAPbI3/Cu, MAPbI3/Ag, and only MAPbI3 (aging conditions: in the dark, in N2 atmosphere, 85 °C, 100 h). b Schematic diagram and the corrosion reaction equations. The standard enthalpy of formation (ΔfH, 298.15 K) and the reaction barrier (ΔE) are also listed. c Schematic diagram of metal diffusion into the perovskite and the atomic ratios at the upper surface. Source data are provided as a Source Data file

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