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(a) Absorption spectra at RT using white light source, (b) photoluminescence (PL) spectra of (PEA)2PbBr4, (PEA1.5BZA0.5)PbBr4, (PEABZA)PbBr4, and (BZA)2PbBr4 recorded at RT and using a laser source excited at 375 nm, and TR-PL decay fitting curves (c,d) excited at 375 nm monitoring the ∼412 nm emission of (PEA1.5BZA0.5)PbBr4 and (PEABZA)PbBr4, respectively.
