Figure 2: Characterization and structure evolution of polymer-scaffold solar cells. | Nature Communications

Figure 2: Characterization and structure evolution of polymer-scaffold solar cells.

From: A polymer scaffold for self-healing perovskite solar cells

Figure 2

(a) HAADF image of the perovskite film with PEG scaffold in STEM mode. Scale bar, 10 nm. (b) EDS mapping of Pb element of the peroskite film. Scale bar, 10 nm. (c) EDS mapping of O element of the peroskite film. O signal corresponds to PEG distribution because only the PEG contains O element among the materials used in perovskite thin film synthesis. Scale bar, 10 nm. (d) X-ray diffraction patterns of the perovskite film (PEG molecule weight: 20,000 Da; PEG concentration: 40 mg ml−1) evolution with annealing time. ‘#’ symbols and ‘*’ symbols denote the intermediate phase and MAPbCl3 phase, respectively.

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