Deep‐Ultraviolet Nonlinear‐Optical van‐der‐Waals Beryllium Borates**
Deep‐Ultraviolet Nonlinear‐Optical van‐der‐Waals Beryllium Borates**
Following our ab initio nonlinear optical (NLO) materials design guidelines, in this Letter, we discovered a novel type of structure to realize potential deep-ultraviolet (DUV) NLO performance in the classical beryllium borate system. By densely stacking the NLO-active layered frameworks, the key design scheme for the structural evolution from the …