Non-centrosymmetric Structures Designed Rationally by “Dimensionality Addition” Strategy toward Promising Nonlinear Optical Family [A-X][In-Se] (A = K/Ba, Rb/Ba; X = Cl, Br)

Formulating a well-defined strategy for designing non-centrosymmetric (NCS) structures is urgent but formidable challenge. Herein, we have conducted an all-around statistic of tetrahedra-based chalcogenides system, revealing a significantly high probability...