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a) Absorption in black and PL emission in green (excited at 405 nm) from a TDBC/PS/NK‐2707 multilayer. The inset shows absorption and PL (excited at 405 nm) recorded from individual films of TDBC (black and blue) and NK‐2707 (black and red) along with their molecular structure. Parts (b) and (c) show schematics of (b) the multilayer film and (c) the microcavity structure explored in this study.
