Halide-Driven Polarity Tuning and Optimized SHG-Bandgap Balance in (C4H11N2)ZnX3 (X = Cl, Br, I)

In the quest for organic-inorganic metal halides (OIMHs) that harmoniously combine large second harmonic generation (SHG) efficiency with broad bandgaps, our study introduces a series of noncentrosymmetric and polar piperazine...