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Li8NaRb3(SO4)6·2H2O as a new sulfate deep-ultraviolet nonlinear optical material

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Abstract

Sulfates have long been ignored as nonlinear optical materials over the past decades. Here we report a new sulfate deep-ultraviolet nonlinear optical material Li8NaRb3(SO4)6·2H2O synthesized by the facile water solution method. It crystallizes in the asymmetric monoclinic space group C2 (No. 5). Its single-crystal structure features a three-dimensional framework made up of SO4 and LiO4 tetrahedra. Powder second-harmonic generation tests demonstrate that Li8NaRb3(SO4)6·2H2O is phase-matchable with a second-harmonic generation response of about 0.5 × KH2PO4. Ultraviolet-visible-near-infrared diffuse reflectance spectra illustrate that the ultraviolet cutoff edge of Li8NaRb3(SO4)6·2H2O may be as low as λ < 190 nm. Theoretical calculations reveal that the optical properties of Li8NaRb3(SO4)6·2H2O are mainly attributed to S–O groups. All these results reveal that Li8NaRb3(SO4)6·2H2O may possess potential use in the deep-ultraviolet nonlinear optics field. We believe that the discoveries in our work will attract scientists’ attention to sulfate systems for their potential as deep-ultraviolet nonlinear optical materials.

Graphical abstract: Li8NaRb3(SO4)6·2H2O as a new sulfate deep-ultraviolet nonlinear optical material

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Publication details

The article was received on 31 Aug 2018, accepted on 02 Oct 2018 and first published on 03 Oct 2018


Article type: Paper
DOI: 10.1039/C8TC04361B
Citation: J. Mater. Chem. C, 2018, Advance Article
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    Li8NaRb3(SO4)6·2H2O as a new sulfate deep-ultraviolet nonlinear optical material

    Y. Li, S. Zhao, P. Shan, X. Li, Q. Ding, S. Liu, Z. Wu, S. Wang, L. Li and J. Luo, J. Mater. Chem. C, 2018, Advance Article , DOI: 10.1039/C8TC04361B

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