Related Experiment Video
Updated: May 3, 2026

In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation
Published on: May 27, 2013
Ag3In3(SeO3)3(SO4)F4: A Sulfate Selenite Nonlinear Optical Material with a Wide Bandgap
Dan-Dan Zhou1,2, Chun-Li Hu1,2, Jiang-Gao Mao1,2
1State Key Laboratory of Functional Crystals and Devices, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, P. R. China.
Abstract:
Combining selenite and sulfate to design nonlinear optical (NLO) materials with wide bandgaps and strong second harmonic generation (SHG) response has been a long-standing challenge in this field, with only a few related achievements reported so far. In this work, we successfully incorporated sulfate groups into selenites via a simple hydrothermal method. Furthermore, we introduced In3+, which does not undergo d-d transitions, along with highly electronegative F- ion, and successfully synthesized the compound Ag3In3(SeO3)3(SO4)F4. This compound exhibits a honeycomb-like three-dimensional structure in which In6Se6 12-membered polyhedral ring tunnels extend along the c axis. Performance testing revealed that Ag3In3(SeO3)3(SO4)F4 demonstrates a moderate SHG response of 1.8 times that of KDP and a wide bandgap of 4.2 eV. This work offers practical and feasible ideas for the design of wide-bandgap NLO materials.
More Related Videos
Related Concept Videos
VSEPR Theory and the Basic Shapes
Ionic Crystal Structures
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
Valence Bond Theory
Chirality at Nitrogen, Phosphorus, and Sulfur
A consequence of chirality is the need for enantiomeric resolution. While this is theoretically possible for all...
Imperfections in Crystal Structure: Stoichiometric Point Defects
Imperfections in Crystal Structure: Non-Stoichiometric Defects

