Issue 47, 2019

LiMg(IO3)3: an excellent SHG material designed by single-site aliovalent substitution

Abstract

An excellent second harmonic generation (SHG) material, LiMg(IO3)3 (LMIO), has been elaborately designed from Li2MIV(IO3)6 (MIV = Ti, Sn, and Ge) by aliovalent substitution of the central MIV cation followed by Wyckoff position exchange. The new structure sustains the ideal-alignment of (IO3) groups. Importantly, LMIO exhibits an extremely strong SHG effect of roughly 24 × KH2PO4 (KDP) under 1064 nm laser radiation or 1.5 × AgGaS2 (AGS) under 2.05 μm laser radiation, which is larger than that of α-LiIO3 (18 × KDP). The replacement of MIV with Mg2+ without d–d electronic transitions induces an obviously larger band gap (4.34 eV) with a short absorption edge (285 nm). This study shows that single-site aliovalent substitution provides a new synthetic route for designing SHG materials.

Graphical abstract: LiMg(IO3)3: an excellent SHG material designed by single-site aliovalent substitution

Supplementary files

Article information

Article type
Edge Article
Submitted
25 sep 2019
Accepted
15 okt 2019
First published
15 okt 2019
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY-NC license

Chem. Sci., 2019,10, 10870-10875

LiMg(IO3)3: an excellent SHG material designed by single-site aliovalent substitution

J. Chen, C. Hu, F. Mao, X. Zhang, B. Yang and J. Mao, Chem. Sci., 2019, 10, 10870 DOI: 10.1039/C9SC04832D

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