Fig. 3: Chemical interaction between additives and perovskite precursors. | Light: Science & Applications

Fig. 3: Chemical interaction between additives and perovskite precursors.

From: In-situ growth of low-dimensional perovskite-based insular nanocrystals for highly efficient light emitting diodes

Fig. 3

a 1H and b 19F NMR spectra of solutions with STFA or 18Cr6 and a combination of them (CrTFA). Obvious shifts of NMR peaks indicate interactions between the components. c IR spectra of an 18Cr6 films, an STFA films, as well as precursors with and without CrTFA. The peak shift indicates interaction between these components. d XPS spectra of the thin films. The shift of the Pb 4f peak shows the interaction between lead and the additives

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