AZn2(BO3)Si2O5 (A = Rb, Cs): first examples of KBe2BO3F2 structure type in the borosilicate family exhibiting a deep-ultraviolet cutoff edge. Issue 5 (11th January 2022)

• Record Type: Journal Article
• Authors: Baiheti, Tuohetijiang; Tudi, Abudukadi; Han, Jian; Yang, Zhihua; Pan, Shilie
• Is Part Of: Journal of materials chemistry. Volume 10:Issue 5(2022)
• Page Start: 1727
• Page End: 1734
• Publication Date: 2022-01-11
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d1tc05529a
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : AZn2 (BO3 )Si2 O5 (A = Rb, Cs): First Examples of KBe2 BO3 F2 Structure Derivative in the Borosilicate, and they Features Short Cutoff Edge Down to 190 nm. Abstract : The design and synthesis of nonlinear optical (NLO) crystals are of crucial significance owing to their pivotal role in solid-state lasers. Two dimensional (2D) [Be2 BO3 F2 ]∞ layers in the famous borate fluoride KBe2 BO3 F2 (KBBF) are a potential source of excellent optical properties, therefore, from structural as well as property aspect KBBF has been employed as a plausible prototype for deep-ultraviolet (DUV) or ultraviolet (UV) NLO crystal design. Herein, the structure of KBBF was extended to the borosilicate system for the first time, and two novel borosilicate NLO crystals AZn2 (BO3 )Si2 O5 (A = Rb, Cs) with a DUV cutoff edge were synthesized using the high-temperature solution method. In their structures, isolated BO3 groups and one dimensional (1D) [Si2 O5 ]∞ chains coexist, owing to the connection of the adjacent 2D [Zn2 BO5 ]∞ layers by strong Si–O covalent bond structurally, both compounds can defeat the habit of layered crystal growth. Meanwhile, two compounds display a short UV cutoff edge (down to 190 nm) and possess a moderate second harmonic generation (SHG) response that is approximately 0.4 and 0.8 times that of KDP, respectively. The successful synthesis of AZn2 (BO3 )Si2 O5 (A = Rb, Cs) may provide novel insights for the discovery of other KBBF structural variants with improved optical performances.