Abstract Chiral organic-inorganic hybrid perovskites offer a promising platform for developing non-linear chiro-optical applications and chiral-induced spin selectivity. Here. we show that achiral hybrid perovskites that have highly ordered ferroelectric domains with orthogonal polarization exhibit planar chirality. as manifested by second harmonic generation with strong circular dich... https://foldlyers.shop/product-category/mkt/