Figure 3.
(a) Raman spectra and (b) FTIR spectra of ODASnBr4[EtOH], ODASnBr4[BuOH], ODASnBr4[PeOH], ODASnBr4[HeOH]. (c–e) XPS spectra of (c) O1s, (d) N1s, (e) Br3d core-levels of ODASnBr4[PeOH], and ODASnBr4[HeOH] perovskite microcrystals.
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