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Figure 2. (A) In situ photoluminescence evolution of pristine and OEGA-modified perovskite films during spin coating and annealing. (B) Temperature-dependent photoluminescence intensity of pristine and OEGA films. (C) Raman spectra showing reduced lattice vibration features after OEGA treatment. This figure adapted from Ref.[1], Copyright © 2026 Springer Nature.
