title: Beryllium-Free KBBF Family of Nonlinear-Optical Crystals: AZn2BO3X2(A = Na, K, Rb; X = Cl, Br).
abstract: A series of a novel beryllium-free KBBF family of nonlinear-optical materials AZn2BO3X2(A = K, Rb and X = Cl; A = Na, K, Rb and X = Br) were successfully synthesized through molecular engineering design, and single crystals of AZn2BO3Cl2(A = K, Rb) were grown by a spontaneous nucleation technique from self-flux systems. As a representative for the halogen KBBF family of crystals, KZn2BO3Cl2features the infinite lattice layer [Zn2BO3Cl2]∞made up of BO3and ZnO3Cl anionic groups, and the in-layer BO3groups are completely coplanar and well-aligned. Besides, KZn2BO3Cl2exhibits high transmittance in the range of 300-2000 nm with a UV-transmission cutoff of around 200 nm according to transmission spectra. The compounds of AZn2BO3Cl2(A = K, Rb) are both phase-matchable with powder second-harmonic-generation efficiencies of 1.3 and 1.17 times that of KH2PO4for KZn2BO3Cl2and RbZn2BO3Cl2, respectively, which are similar to that of KBBF.
authors.affiliation: Beijing Center for Crystal Research and Development, Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Beijing 100190, China.|University of the Chinese Academy of Sciences , Beijing 100049, China.
authors.forename: Qian
authors.identifier: http://orcid.org/0000-0002-7284-2042
authors.initials: Q
authors.lastname: Huang
authors.affiliation: Beijing Center for Crystal Research and Development, Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Beijing 100190, China.
authors.forename: Lijuan
authors.initials: L
authors.lastname: Liu
authors.affiliation: Beijing Center for Crystal Research and Development, Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Beijing 100190, China.
authors.forename: Xiaoyang
authors.initials: X
authors.lastname: Wang
authors.affiliation: Beijing Center for Crystal Research and Development, Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Beijing 100190, China.
authors.forename: Rukang
authors.initials: R
authors.lastname: Li
authors.affiliation: Beijing Center for Crystal Research and Development, Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Beijing 100190, China.
authors.forename: Chuangtian
authors.initials: C
authors.lastname: Chen