Novel ultraviolet (UV) nonlinear optical (NLO) materials discovered by chemical substitution-oriented design.

Exploring novel functional materials via chemical substitution-oriented design is an emerging strategy. The method can be expanded to the discovery of high performance ultraviolet (UV) nonlinear optical (NLO) solid state materials by a careful tuning of the substituted atoms. This minireview presents a brief introduction to chemical substitution-oriented design including single-site substitution, dual-site substitution, and multisite substitution. Several state-of-the-art UV NLO materials such as K3VO(O2)2CO3-type, KBe2BO3F2 (KBBF)-type, Ca5(PO4)3(OH)-type, and KTiOPO4 (KTP)-type phases successfully discovered by the chemical substitution method are discussed.